EXTI interrupt abstraction feature complete

Merged branch UART and changed get function
Finished basic UART feature
2025-09-08 02:24:02 -07:00 · 2025-09-08 00:42:54 -07:00 · 2025-09-07 22:20:37 -07:00 · 2025-09-07 21:30:32 -07:00 · 2025-09-07 03:54:03 -07:00 · 2025-09-07 01:59:51 -07:00
50 changed files with 1810 additions and 109 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,10 @@
 .idea/**/dictionaries
 .idea/**/shelf

+build/
+
 # AWS User-specific
+.idea/
 .idea/**/aws.xml

 # Generated files
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -0,0 +1,99 @@
+cmake_minimum_required(VERSION 3.19)
+
+project(shmingo-HAL)
+set(PROJECT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+
+set(MCU_FAMILY "STM32F0xx" CACHE STRING "MCU family")
+set(MCU_MODEL "" CACHE STRING "MCU model")
+
+set(CPU_PARAMETERS 
+    -mcpu=cortex-m0
+    -mthumb)
+
+set(STARTUP_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/MX/startup_stm32f072rbtx.s)
+set(MCU_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/MX/STM32F072RBTX_FLASH.ld)
+
+set(EXECUTABLE ${CMAKE_PROJECT_NAME})
+enable_language(C CXX ASM)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+set(CMAKE_C_EXTENSIONS ON)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS ON)
+
+set(MX_INCLUDE_DIRECTORIES
+    ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/CMSIS/Device/ST/${MCU_FAMILY}/Include
+    ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/CMSIS/Include
+)
+
+set(PROJECT_INCLUDE_DIRECTORIES
+    ${CMAKE_CURRENT_SOURCE_DIR}
+        SHAL/Include/Core/
+        SHAL/Include/Peripheral/Timer
+        SHAL/Include/Peripheral/Timer/Reg
+        SHAL/Include/Peripheral/GPIO
+        SHAL/Include/Peripheral/GPIO/Reg
+        SHAL/Include/Peripheral/UART
+        SHAL/Include/Peripheral/UART/Reg
+        SHAL/Include/Peripheral/EXT/
+        ${CMAKE_CURRENT_SOURCE_DIR}/SHAL/Include
+)
+
+file(GLOB_RECURSE PROJECT_SOURCES
+        ${CMAKE_CURRENT_SOURCE_DIR}/SHAL/*.c
+        ${CMAKE_CURRENT_SOURCE_DIR}/SHAL/*.cpp
+)
+
+add_executable(${EXECUTABLE}
+    ${PROJECT_SOURCES}
+    ${STARTUP_SCRIPT}
+)
+
+target_compile_definitions(${EXECUTABLE} PRIVATE
+    ${MCU_MODEL}
+)
+
+target_include_directories(${EXECUTABLE} PRIVATE
+    ${MX_INCLUDE_DIRECTORIES}
+    ${PROJECT_INCLUDE_DIRECTORIES}
+)
+
+target_compile_options(${EXECUTABLE} PRIVATE
+    ${CPU_PARAMETERS}
+    -Wall
+    -Wextra
+    -Wpedantic
+    -Wno-unused-parameter
+    $<$<COMPILE_LANGUAGE:CXX>:
+        -Wno-volatile
+        -Wsuggest-override>
+    
+        $<$<CONFIG:Debug>:-Og -g3 -ggdb>
+        $<$<CONFIG:Release>:-Og -g0>
+)
+
+target_link_options(${EXECUTABLE} PRIVATE
+    -T${MCU_LINKER_SCRIPT}
+    ${CPU_PARAMETERS}
+    -Wl,-Map=${CMAKE_PROJECT_NAME}.map
+    --specs=nosys.specs
+    -Wl,--start-group
+    -lc
+    -lm
+    -lstdc++
+    -lsupc++
+    -Wl,--end-group
+    -Wl,--print-memory-usage
+)
+
+add_custom_command(TARGET ${EXECUTABLE} POST_BUILD
+    COMMAND ${CMAKE_SIZE} $<TARGET_FILE:${EXECUTABLE}>
+)
+
+add_custom_command(TARGET ${EXECUTABLE} POST_BUILD
+    COMMAND ${CMAKE_OBJCOPY} -O ihex $<TARGET_FILE:${EXECUTABLE}>
+    ${EXECUTABLE}.hex
+    COMMAND ${CMAKE_OBJCOPY} -O binary $<TARGET_FILE:${EXECUTABLE}>
+    ${EXECUTABLE}.bin
+)
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -0,0 +1,28 @@
+{
+  "version": 3,
+  "cmakeMinimumRequired": {
+    "major": 3,
+    "minor": 19
+  },
+  "configurePresets": [
+    {
+      "name": "stm32-debug",
+      "hidden": false,
+      "generator": "Ninja",
+      "toolchainFile": "gcc-arm-none-eabi.cmake",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
+      }
+    },
+    {
+      "name": "stm32-release",
+      "generator": "Ninja",
+      "toolchainFile": "gcc-arm-none-eabi.cmake",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release",
+        "CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
+      }
+    }
+  ]
+}
--- a/Core/Src/main.cpp
+++ b/Core/Src/main.cpp
@@ -1,59 +0,0 @@
-#include "stm32f0xx.h"  // Or your device header
-
-volatile int prev_button = false;
-volatile int curr_button = false;
-
-extern "C" void TIM2_IRQHandler(void){
-	if(TIM2->SR & TIM_SR_UIF){
-		TIM2->SR &= ~TIM_SR_UIF;
-		GPIOA->ODR ^= (1 << 5);
-	}
-}
-
-extern "C" void EXTI0_1_IRQHandler(void) {
-    if (EXTI->PR & (1 << 0)) {   //Check pending flag
-        EXTI->PR |= (1 << 0);    //Clear it by writing 1
-        GPIOA->ODR ^= (1 << 4);
-    }
-}
-
-int main() {
-    RCC->AHBENR |= RCC_AHBENR_GPIOAEN;
-    RCC->AHBENR |= RCC_AHBENR_GPIOBEN;
-    RCC->APB1ENR |= RCC_APB1ENR_TIM2EN;
-    RCC->APB2ENR |= RCC_APB2ENR_SYSCFGEN; // Enable SYSCFG clock (needed for EXTI)
-
-    TIM2->EGR |= TIM_EGR_UG;   //Force update to load PSC/ARR
-
-    GPIOA->MODER &= ~(0b11 << (4 * 2));
-    GPIOA->MODER |= (0b1 << (4 * 2));
-
-    GPIOA->MODER &= ~(0x3 << (5 * 2));
-    GPIOA->MODER |=  (0x1 << (5 * 2));
-
-    GPIOB->MODER &= ~(0x3 << (0 * 2));
-    GPIOB->MODER |=  (0x0 << (0 * 2));
-
-    TIM2->PSC = 8000 - 1; //8MHz base, prescaler
-    TIM2->ARR = 500 - 1; //500ms, auto reload register
-
-    SYSCFG->EXTICR[0] &= ~SYSCFG_EXTICR1_EXTI0; // Clear EXTI0 mapping
-    SYSCFG->EXTICR[0] |= SYSCFG_EXTICR1_EXTI0_PB; // Map PA0 -> EXTI0
-
-    EXTI->IMR |= (1 << 0);   // Unmask EXTI0
-    EXTI->RTSR |= (1 << 0);  // Trigger on rising edge
-
-
-    TIM2->DIER |= TIM_DIER_UIE; //Interrupt register
-    TIM2->CR1 |= TIM_CR1_CEN; //Counter enable
-
-
-    NVIC_EnableIRQ(TIM2_IRQn);
-    NVIC_EnableIRQ(EXTI0_1_IRQn); // EXTI lines 0 and 1 share an IRQ vector
-
-    __enable_irq();
-
-    while (1) {
-    	__WFI();
-    }
-}
--- a/Drivers/CMSIS/Device/ST/STM32F0xx/Include/stm32f072xb.h
+++ b/Drivers/CMSIS/Device/ST/STM32F0xx/Include/stm32f072xb.h
@@ -467,7 +467,7 @@ typedef struct
  __IO uint32_t CR;         /*!< RTC control register,                                      Address offset: 0x08 */
  __IO uint32_t ISR;        /*!< RTC initialization and status register,                    Address offset: 0x0C */
  __IO uint32_t PRER;       /*!< RTC prescaler register,                                    Address offset: 0x10 */
-  __IO uint32_t WUTR;       /*!< RTC wakeup timer register,                                 Address offset: 0x14 */
+  __IO uint32_t WUTR;       /*!< RTC wakeup TIMER_KEY register,                                 Address offset: 0x14 */
       uint32_t RESERVED1;  /*!< Reserved,                                                  Address offset: 0x18 */
  __IO uint32_t ALRMAR;     /*!< RTC alarm A register,                                      Address offset: 0x1C */
       uint32_t RESERVED2;  /*!< Reserved,                                                  Address offset: 0x20 */
--- a/Drivers/CMSIS/Device/ST/STM32F0xx/Include/system_stm32f0xx.h
+++ b/Drivers/CMSIS/Device/ST/STM32F0xx/Include/system_stm32f0xx.h
@@ -47,11 +47,6 @@
  */
  /* This variable is updated in three ways:
      1) by calling CMSIS function SystemCoreClockUpdate()
-      3) by calling HAL API function HAL_RCC_GetHCLKFreq()
-      3) by calling HAL API function HAL_RCC_ClockConfig()
-         Note: If you use this function to configure the system clock; then there
-               is no need to call the 2 first functions listed above, since SystemCoreClock
-               variable is updated automatically.
  */
 extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
 extern const uint8_t AHBPrescTable[16];   /*!< AHB prescalers table values */
--- a/Drivers/CMSIS/Include/cmsis_armcc.h
+++ b/Drivers/CMSIS/Include/cmsis_armcc.h
@@ -101,7 +101,7 @@
  #define __RESTRICT                             __restrict
 #endif

-/* ###########################  Core Function Access  ########################### */
+/* ###########################  SHAL Function Access  ########################### */
 /** \ingroup  CMSIS_Core_FunctionInterface
    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
  @{
@@ -374,7 +374,7 @@ __STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
 /*@} end of CMSIS_Core_RegAccFunctions */


-/* ##########################  Core Instruction Access  ######################### */
+/* ##########################  SHAL Instruction Access  ######################### */
 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
  Access to dedicated instructions
  @{
--- a/Drivers/CMSIS/Include/cmsis_armclang.h
+++ b/Drivers/CMSIS/Include/cmsis_armclang.h
@@ -112,7 +112,7 @@
 #endif


-/* ###########################  Core Function Access  ########################### */
+/* ###########################  SHAL Function Access  ########################### */
 /** \ingroup  CMSIS_Core_FunctionInterface
    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
  @{
@@ -770,7 +770,7 @@ __STATIC_FORCEINLINE void __TZ_set_MSPLIM_NS(uint32_t MainStackPtrLimit)
 /*@} end of CMSIS_Core_RegAccFunctions */


-/* ##########################  Core Instruction Access  ######################### */
+/* ##########################  SHAL Instruction Access  ######################### */
 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
  Access to dedicated instructions
  @{
--- a/Drivers/CMSIS/Include/cmsis_gcc.h
+++ b/Drivers/CMSIS/Include/cmsis_gcc.h
@@ -115,7 +115,7 @@
 #endif


-/* ###########################  Core Function Access  ########################### */
+/* ###########################  SHAL Function Access  ########################### */
 /** \ingroup  CMSIS_Core_FunctionInterface
    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
  @{
@@ -810,7 +810,7 @@ __STATIC_FORCEINLINE void __set_FPSCR(uint32_t fpscr)
 /*@} end of CMSIS_Core_RegAccFunctions */


-/* ##########################  Core Instruction Access  ######################### */
+/* ##########################  SHAL Instruction Access  ######################### */
 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
  Access to dedicated instructions
  @{
--- a/Drivers/CMSIS/Include/core_armv8mbl.h
+++ b/Drivers/CMSIS/Include/core_armv8mbl.h
@@ -1033,7 +1033,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1109,7 +1109,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
  #define SCS_BASE            (0xE000E000UL)                             /*!< System Control Space Base Address */
  #define DWT_BASE            (0xE0001000UL)                             /*!< DWT Base Address */
  #define TPI_BASE            (0xE0040000UL)                             /*!< TPI Base Address */
@@ -1138,7 +1138,7 @@ typedef struct

 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
  #define SCS_BASE_NS         (0xE002E000UL)                             /*!< System Control Space Base Address (non-secure address space) */
-  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< Core Debug Base Address           (non-secure address space) */
+  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< SHAL Debug Base Address           (non-secure address space) */
  #define SysTick_BASE_NS     (SCS_BASE_NS +  0x0010UL)                  /*!< SysTick Base Address              (non-secure address space) */
  #define NVIC_BASE_NS        (SCS_BASE_NS +  0x0100UL)                  /*!< NVIC Base Address                 (non-secure address space) */
  #define SCB_BASE_NS         (SCS_BASE_NS +  0x0D00UL)                  /*!< System Control Block Base Address (non-secure address space) */
@@ -1146,7 +1146,7 @@ typedef struct
  #define SCB_NS              ((SCB_Type       *)     SCB_BASE_NS      ) /*!< SCB configuration struct          (non-secure address space) */
  #define SysTick_NS          ((SysTick_Type   *)     SysTick_BASE_NS  ) /*!< SysTick configuration struct      (non-secure address space) */
  #define NVIC_NS             ((NVIC_Type      *)     NVIC_BASE_NS     ) /*!< NVIC configuration struct         (non-secure address space) */
-  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< Core Debug configuration struct   (non-secure address space) */
+  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< SHAL Debug configuration struct   (non-secure address space) */

  #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
    #define MPU_BASE_NS       (SCS_BASE_NS +  0x0D90UL)                  /*!< Memory Protection Unit            (non-secure address space) */
--- a/Drivers/CMSIS/Include/core_armv8mml.h
+++ b/Drivers/CMSIS/Include/core_armv8mml.h
@@ -1863,7 +1863,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1969,7 +1969,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
  #define SCS_BASE            (0xE000E000UL)                             /*!< System Control Space Base Address */
  #define ITM_BASE            (0xE0000000UL)                             /*!< ITM Base Address */
  #define DWT_BASE            (0xE0001000UL)                             /*!< DWT Base Address */
@@ -2003,7 +2003,7 @@ typedef struct

 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
  #define SCS_BASE_NS         (0xE002E000UL)                             /*!< System Control Space Base Address (non-secure address space) */
-  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< Core Debug Base Address           (non-secure address space) */
+  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< SHAL Debug Base Address           (non-secure address space) */
  #define SysTick_BASE_NS     (SCS_BASE_NS +  0x0010UL)                  /*!< SysTick Base Address              (non-secure address space) */
  #define NVIC_BASE_NS        (SCS_BASE_NS +  0x0100UL)                  /*!< NVIC Base Address                 (non-secure address space) */
  #define SCB_BASE_NS         (SCS_BASE_NS +  0x0D00UL)                  /*!< System Control Block Base Address (non-secure address space) */
@@ -2012,7 +2012,7 @@ typedef struct
  #define SCB_NS              ((SCB_Type       *)     SCB_BASE_NS      ) /*!< SCB configuration struct          (non-secure address space) */
  #define SysTick_NS          ((SysTick_Type   *)     SysTick_BASE_NS  ) /*!< SysTick configuration struct      (non-secure address space) */
  #define NVIC_NS             ((NVIC_Type      *)     NVIC_BASE_NS     ) /*!< NVIC configuration struct         (non-secure address space) */
-  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< Core Debug configuration struct   (non-secure address space) */
+  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< SHAL Debug configuration struct   (non-secure address space) */

  #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
    #define MPU_BASE_NS       (SCS_BASE_NS +  0x0D90UL)                  /*!< Memory Protection Unit            (non-secure address space) */
--- a/Drivers/CMSIS/Include/core_cm0.h
+++ b/Drivers/CMSIS/Include/core_cm0.h
@@ -530,7 +530,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
 #define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
--- a/Drivers/CMSIS/Include/core_cm0plus.h
+++ b/Drivers/CMSIS/Include/core_cm0plus.h
@@ -644,7 +644,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
 #define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
--- a/Drivers/CMSIS/Include/core_cm1.h
+++ b/Drivers/CMSIS/Include/core_cm1.h
@@ -556,7 +556,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
 #define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
--- a/Drivers/CMSIS/Include/core_cm23.h
+++ b/Drivers/CMSIS/Include/core_cm23.h
@@ -1108,7 +1108,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1184,7 +1184,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
  #define SCS_BASE            (0xE000E000UL)                             /*!< System Control Space Base Address */
  #define DWT_BASE            (0xE0001000UL)                             /*!< DWT Base Address */
  #define TPI_BASE            (0xE0040000UL)                             /*!< TPI Base Address */
@@ -1213,7 +1213,7 @@ typedef struct

 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
  #define SCS_BASE_NS         (0xE002E000UL)                             /*!< System Control Space Base Address (non-secure address space) */
-  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< Core Debug Base Address           (non-secure address space) */
+  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< SHAL Debug Base Address           (non-secure address space) */
  #define SysTick_BASE_NS     (SCS_BASE_NS +  0x0010UL)                  /*!< SysTick Base Address              (non-secure address space) */
  #define NVIC_BASE_NS        (SCS_BASE_NS +  0x0100UL)                  /*!< NVIC Base Address                 (non-secure address space) */
  #define SCB_BASE_NS         (SCS_BASE_NS +  0x0D00UL)                  /*!< System Control Block Base Address (non-secure address space) */
@@ -1221,7 +1221,7 @@ typedef struct
  #define SCB_NS              ((SCB_Type       *)     SCB_BASE_NS      ) /*!< SCB configuration struct          (non-secure address space) */
  #define SysTick_NS          ((SysTick_Type   *)     SysTick_BASE_NS  ) /*!< SysTick configuration struct      (non-secure address space) */
  #define NVIC_NS             ((NVIC_Type      *)     NVIC_BASE_NS     ) /*!< NVIC configuration struct         (non-secure address space) */
-  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< Core Debug configuration struct   (non-secure address space) */
+  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< SHAL Debug configuration struct   (non-secure address space) */

  #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
    #define MPU_BASE_NS       (SCS_BASE_NS +  0x0D90UL)                  /*!< Memory Protection Unit            (non-secure address space) */
--- a/Drivers/CMSIS/Include/core_cm3.h
+++ b/Drivers/CMSIS/Include/core_cm3.h
@@ -1296,7 +1296,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1379,7 +1379,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define ITM_BASE            (0xE0000000UL)                            /*!< ITM Base Address */
 #define DWT_BASE            (0xE0001000UL)                            /*!< DWT Base Address */
--- a/Drivers/CMSIS/Include/core_cm33.h
+++ b/Drivers/CMSIS/Include/core_cm33.h
@@ -1938,7 +1938,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -2044,7 +2044,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
  #define SCS_BASE            (0xE000E000UL)                             /*!< System Control Space Base Address */
  #define ITM_BASE            (0xE0000000UL)                             /*!< ITM Base Address */
  #define DWT_BASE            (0xE0001000UL)                             /*!< DWT Base Address */
@@ -2078,7 +2078,7 @@ typedef struct

 #if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
  #define SCS_BASE_NS         (0xE002E000UL)                             /*!< System Control Space Base Address (non-secure address space) */
-  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< Core Debug Base Address           (non-secure address space) */
+  #define CoreDebug_BASE_NS   (0xE002EDF0UL)                             /*!< SHAL Debug Base Address           (non-secure address space) */
  #define SysTick_BASE_NS     (SCS_BASE_NS +  0x0010UL)                  /*!< SysTick Base Address              (non-secure address space) */
  #define NVIC_BASE_NS        (SCS_BASE_NS +  0x0100UL)                  /*!< NVIC Base Address                 (non-secure address space) */
  #define SCB_BASE_NS         (SCS_BASE_NS +  0x0D00UL)                  /*!< System Control Block Base Address (non-secure address space) */
@@ -2087,7 +2087,7 @@ typedef struct
  #define SCB_NS              ((SCB_Type       *)     SCB_BASE_NS      ) /*!< SCB configuration struct          (non-secure address space) */
  #define SysTick_NS          ((SysTick_Type   *)     SysTick_BASE_NS  ) /*!< SysTick configuration struct      (non-secure address space) */
  #define NVIC_NS             ((NVIC_Type      *)     NVIC_BASE_NS     ) /*!< NVIC configuration struct         (non-secure address space) */
-  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< Core Debug configuration struct   (non-secure address space) */
+  #define CoreDebug_NS        ((CoreDebug_Type *)     CoreDebug_BASE_NS) /*!< SHAL Debug configuration struct   (non-secure address space) */

  #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
    #define MPU_BASE_NS       (SCS_BASE_NS +  0x0D90UL)                  /*!< Memory Protection Unit            (non-secure address space) */
--- a/Drivers/CMSIS/Include/core_cm4.h
+++ b/Drivers/CMSIS/Include/core_cm4.h
@@ -1467,7 +1467,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1550,7 +1550,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define ITM_BASE            (0xE0000000UL)                            /*!< ITM Base Address */
 #define DWT_BASE            (0xE0001000UL)                            /*!< DWT Base Address */
--- a/Drivers/CMSIS/Include/core_cm7.h
+++ b/Drivers/CMSIS/Include/core_cm7.h
@@ -1675,7 +1675,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1758,7 +1758,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define ITM_BASE            (0xE0000000UL)                            /*!< ITM Base Address */
 #define DWT_BASE            (0xE0001000UL)                            /*!< DWT Base Address */
--- a/Drivers/CMSIS/Include/core_sc000.h
+++ b/Drivers/CMSIS/Include/core_sc000.h
@@ -653,7 +653,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
 #define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
--- a/Drivers/CMSIS/Include/core_sc300.h
+++ b/Drivers/CMSIS/Include/core_sc300.h
@@ -1276,7 +1276,7 @@ typedef struct
 #define CoreDebug_DHCSR_C_DEBUGEN_Pos       0U                                            /*!< CoreDebug DHCSR: C_DEBUGEN Position */
 #define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */

-/* Debug Core Register Selector Register Definitions */
+/* Debug SHAL Register Selector Register Definitions */
 #define CoreDebug_DCRSR_REGWnR_Pos         16U                                            /*!< CoreDebug DCRSR: REGWnR Position */
 #define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */

@@ -1359,7 +1359,7 @@ typedef struct
  @{
 */

-/* Memory mapping of Core Hardware */
+/* Memory mapping of SHAL Hardware */
 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
 #define ITM_BASE            (0xE0000000UL)                            /*!< ITM Base Address */
 #define DWT_BASE            (0xE0001000UL)                            /*!< DWT Base Address */
--- a/MX/STM32F072RBTX_FLASH.ld
+++ b/MX/STM32F072RBTX_FLASH.ld
@@ -0,0 +1,187 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+**  Abstract    : Linker script for NUCLEO-F072RB Board embedding STM32F072RBTx Device from stm32f0 series
+**                      128KBytes FLASH
+**                      16KBytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** Copyright (c) 2025 STMicroelectronics.
+** All rights reserved.
+**
+** This software is licensed under terms that can be found in the LICENSE file
+** in the root directory of this software component.
+** If no LICENSE file comes with this software, it is provided AS-IS.
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 16K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 128K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
--- a/Core/Startup/startup_stm32f072rbtx.s
+++ b/Core/Startup/startup_stm32f072rbtx.s
--- a/41
+++ b/41
@@ -0,0 +1,41 @@
+.PHONY: all build cmake clean format
+
+# --- Configurable variables ---
+BUILD_DIR    := build
+BUILD_TYPE   ?= Debug
+TOOLCHAIN    := gcc-arm-none-eabi.cmake
+
+# MCU target (override on command line: make build MCU_MODEL=STM32F051x8)
+MCU_MODEL    ?= STM32F072xB
+MCU_FAMILY   ?= STM32F0xx
+
+# --- Default target ---
+all: build
+
+# --- Configure step (runs CMake if build dir missing or stale) ---
+${BUILD_DIR}/build.ninja:
+	cmake \
+		-G Ninja \
+		-B ${BUILD_DIR} \
+		-DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
+		-DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN} \
+		-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+		-DMCU_MODEL=$(MCU_MODEL) \
+		-DMCU_FAMILY=$(MCU_FAMILY)
+
+cmake: ${BUILD_DIR}/build.ninja
+
+# --- Build step ---
+build: cmake
+	cmake --build ${BUILD_DIR}
+
+# --- Format all sources ---
+SRCS := $(shell find . -type f \( -name '*.[ch]' -o -name '*.[ch]pp' \))
+format: $(addsuffix .format,${SRCS})
+
+%.format: %
+	clang-format -i $<
+
+# --- Clean ---
+clean:
+	rm -rf ${BUILD_DIR} compile_commands.json
--- a/SHAL/Include/Core/SHAL_CORE.h
+++ b/SHAL/Include/Core/SHAL_CORE.h
@@ -0,0 +1,60 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_CORE.h
+  * @author  Luca Lizaranzu
+  * @brief   Defines universal macros and objects used across all STM32 families
+  * Includes for ST Microelectronics pre-made C headers for STM32 device families
+  ******************************************************************************
+  */
+#ifndef SHMINGO_HAL_SHAL_CORE_H
+#define SHMINGO_HAL_SHAL_CORE_H
+
+#include <cstdint>
+
+//Universal structs and defines ---------------------------
+
+
+
+
+
+//---------------------------------------------------------
+
+
+#if defined(STM32F030x6)
+#include "stm32f030x6.h"
+#elif defined(STM32F030x8)
+#include "stm32f030x8.h"
+#elif defined(STM32F031x6)
+#include "stm32f031x6.h"
+#elif defined(STM32F038xx)
+#include "stm32f038xx.h"
+#elif defined(STM32F042x6)
+#include "stm32f042x6.h"
+#elif defined(STM32F048xx)
+#include "stm32f048xx.h"
+#elif defined(STM32F051x8)
+#include "stm32f051x8.h"
+#elif defined(STM32F058xx)
+#include "stm32f058xx.h"
+#elif defined(STM32F070x6)
+#include "stm32f070x6.h"
+#elif defined(STM32F070xB)
+#include "stm32f070xb.h"
+#elif defined(STM32F071xB)
+#include "stm32f071xb.h"
+#elif defined(STM32F072xB)
+#include "stm32f072xb.h"
+#elif defined(STM32F078xx)
+#include "stm32f078xx.h"
+#elif defined(STM32F091xC)
+  #include "stm32f091xc.h"
+#elif defined(STM32F098xx)
+  #include "stm32f098xx.h"
+#elif defined(STM32F030xC)
+  #include "stm32f030xc.h"
+#else
+ #error "Please select first the target STM32F0xx device used in your application (in stm32f0xx.h file)"
+#endif
+
+
+#endif //SHMINGO_HAL_SHAL_CORE_H
--- a/SHAL/Include/Peripheral/EXT/SHAL_EXTI_CALLBACK.h
+++ b/SHAL/Include/Peripheral/EXT/SHAL_EXTI_CALLBACK.h
@@ -0,0 +1,41 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_TIM.h
+  * @author  Luca Lizaranzu
+  * @brief   Callbacks for external interrupts
+  ******************************************************************************
+  */
+
+#ifndef SHAL_EXTI_CALLBACK_H
+#define SHAL_EXTI_CALLBACK_H
+
+#include "SHAL_CORE.h"
+#include "SHAL_GPIO_REG.h"
+
+#define DEFINE_EXTI_IRQ(EXTI_Channel)                           \
+extern "C" void EXTI##EXTI_Channel##_IRQHandler(void) {         \
+    if (EXTI->PR & (1 << EXTI_Channel)) {                   \
+        EXTI->PR |= (1 << EXTI_Channel); /*clear flag */    \
+        auto cb = EXTI_callbacks[EXTI_Channel];                 \
+        if (cb) cb();                                           \
+    };                                                          \
+};
+
+#define DEFINE_MULTI_EXTI_IRQ(EXTI_Channel_Min, EXTI_Channel_Max)                   \
+extern "C" void EXTI##EXTI_Channel_Min##_##EXTI_Channel_Max##_IRQHandler(void) {    \
+    for(uint8_t line = EXTI_Channel_Min; line <= EXTI_Channel_Max; line++){         \
+        if (EXTI->PR & (1 << line)) {                                   \
+            EXTI->PR |= (1 << line); /*clear flag */                    \
+            auto cb = EXTI_callbacks[line];                                         \
+            if (cb) cb();                                                           \
+        };                                                                          \
+    }                                                                               \
+};
+
+typedef void (*EXTICallback)(); //Typedef for callback function
+
+[[maybe_unused]] static EXTICallback EXTI_callbacks[NUM_EXTI_LINES] = {nullptr}; //Timer IRQ Callback table
+
+void registerEXTICallback(GPIO_Key key, EXTICallback callback);
+
+#endif //SHAL_EXTI_CALLBACK_H
--- a/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_REG.h
+++ b/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_REG.h
@@ -0,0 +1,47 @@
+//
+// Created by Luca on 9/6/2025.
+//
+
+#ifndef SHAL_GPIO_REG_H
+#define SHAL_GPIO_REG_H
+
+#if defined(STM32F030x6)
+#include "stm32f030x6.h"
+#elif defined(STM32F030x8)
+#include "stm32f030x8.h"
+#elif defined(STM32F031x6)
+#include "stm32f031x6.h"
+#elif defined(STM32F038xx)
+#include "stm32f038xx.h"
+#elif defined(STM32F042x6)
+#include "stm32f042x6.h"
+#elif defined(STM32F048xx)
+#include "stm32f048xx.h"
+#elif defined(STM32F051x8)
+#include "stm32f051x8.h"
+#elif defined(STM32F058xx)
+#include "stm32f058xx.h"
+#elif defined(STM32F070x6)
+#include "stm32f070x6.h"
+#elif defined(STM32F070xB)
+#include "stm32f070xb.h"
+#elif defined(STM32F071xB)
+#include "stm32f071xb.h"
+#elif defined(STM32F072xB)
+#include "SHAL_GPIO_REG_F072xB.h"
+#elif defined(STM32F078xx)
+#include "stm32f078xx.h"
+#elif defined(STM32F091xC)
+  #include "stm32f091xc.h"
+#elif defined(STM32F098xx)
+  #include "stm32f098xx.h"
+#elif defined(STM32F030xC)
+  #include "stm32f030xc.h"
+#else
+ #error "Please select first the target STM32F0xx device used in your application (in stm32f0xx.h file)"
+#endif
+
+
+
+
+#endif //SHMINGO_HAL_SHAL_GPIO_REG_H
--- a/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_REG_F072xB.h
+++ b/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_REG_F072xB.h
@@ -0,0 +1,275 @@
+//
+// Created by Luca on 8/29/2025.
+//
+
+#ifndef SHAL_GPIO_REG_F072XB_H
+#define SHAL_GPIO_REG_F072XB_H
+
+#include <stm32f072xb.h>
+#include <cassert>
+
+#include "SHAL_GPIO_TYPES.h"
+
+#define AVAILABLE_PORTS 3
+#define PINS_PER_PORT 16
+#define NUM_EXTI_LINES 16
+
+#define AVAILABLE_GPIO \
+    X(A0) X(A1) X(A2) X(A3) X(A4) X(A5) X(A6) X(A7) X(A8) X(A9) X(A10) X(A11) X(A12) X(A13) X(A14) X(A15) \
+    X(B0) X(B1) X(B2) X(B3) X(B4) X(B5) X(B6) X(B7) X(B8) X(B9) X(B10) X(B11) X(B12) X(B13) X(B14) X(B15) \
+    X(C0) X(C1) X(C2) X(C3) X(C4) X(C5) X(C6) X(C7) X(C8) X(C9) X(C10) X(C11) X(C12) X(C13) X(C14) X(C15)
+
+
+//Build enum map of available GPIO pins
+enum class GPIO_Key : uint8_t {
+    #define X(key) key,
+        AVAILABLE_GPIO
+    #undef X
+    NUM_GPIO,
+    INVALID
+};
+
+
+
+constexpr SHAL_GPIO_Peripheral getGPIORegister(const GPIO_Key g){
+    switch(g) {
+        case GPIO_Key::A0: return {GPIOA,0};
+        case GPIO_Key::A1: return {GPIOA,1};
+        case GPIO_Key::A2: return {GPIOA,2};
+        case GPIO_Key::A3: return {GPIOA,3};
+        case GPIO_Key::A4: return {GPIOA,4};
+        case GPIO_Key::A5: return {GPIOA,5};
+        case GPIO_Key::A6: return {GPIOA,6};
+        case GPIO_Key::A7: return {GPIOA,7};
+        case GPIO_Key::A8: return {GPIOA,8};
+        case GPIO_Key::A9: return {GPIOA,9};
+        case GPIO_Key::A10: return {GPIOA,10};
+        case GPIO_Key::A11: return {GPIOA,11};
+        case GPIO_Key::A12: return {GPIOA,12};
+        case GPIO_Key::A13: return {GPIOA,13};
+        case GPIO_Key::A14: return {GPIOA,14};
+        case GPIO_Key::A15: return {GPIOA,15};
+        case GPIO_Key::B0: return {GPIOB,0};
+        case GPIO_Key::B1: return {GPIOB,1};
+        case GPIO_Key::B2: return {GPIOB,2};
+        case GPIO_Key::B3: return {GPIOB,3};
+        case GPIO_Key::B4: return {GPIOB,4};
+        case GPIO_Key::B5: return {GPIOB,5};
+        case GPIO_Key::B6: return {GPIOB,6};
+        case GPIO_Key::B7: return {GPIOB,7};
+        case GPIO_Key::B8: return {GPIOB,8};
+        case GPIO_Key::B9: return {GPIOB,9};
+        case GPIO_Key::B10: return {GPIOB,10};
+        case GPIO_Key::B11: return {GPIOB,11};
+        case GPIO_Key::B12: return {GPIOB,12};
+        case GPIO_Key::B13: return {GPIOB,13};
+        case GPIO_Key::B14: return {GPIOB,14};
+        case GPIO_Key::B15: return {GPIOB,15};
+        case GPIO_Key::C0: return {GPIOC,0};
+        case GPIO_Key::C1: return {GPIOC,1};
+        case GPIO_Key::C2: return {GPIOC,2};
+        case GPIO_Key::C3: return {GPIOC,3};
+        case GPIO_Key::C4: return {GPIOC,4};
+        case GPIO_Key::C5: return {GPIOC,5};
+        case GPIO_Key::C6: return {GPIOC,6};
+        case GPIO_Key::C7: return {GPIOC,7};
+        case GPIO_Key::C8: return {GPIOC,8};
+        case GPIO_Key::C9: return {GPIOC,9};
+        case GPIO_Key::C10: return {GPIOC,10};
+        case GPIO_Key::C11: return {GPIOC,11};
+        case GPIO_Key::C12: return {GPIOC,12};
+        case GPIO_Key::C13: return {GPIOC,13};
+        case GPIO_Key::C14: return {GPIOC,14};
+        case GPIO_Key::C15: return {GPIOC,15};
+        case GPIO_Key::INVALID:
+        case GPIO_Key::NUM_GPIO:
+            assert(false);
+            return SHAL_GPIO_Peripheral(nullptr,0); //Unreachable
+    }
+    __builtin_unreachable();
+}
+
+constexpr SHAL_EXTIO_Register getGPIOEXTICR(const GPIO_Key g){
+    switch(g) {
+        case GPIO_Key::A0: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI0_PA,EXTI0_1_IRQn};
+        case GPIO_Key::A1: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI1_PA,EXTI0_1_IRQn};
+        case GPIO_Key::A2: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI2_PA,EXTI2_3_IRQn};
+        case GPIO_Key::A3: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI3_PA,EXTI2_3_IRQn};
+        case GPIO_Key::A4: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI4_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A5: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI5_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A6: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI6_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A7: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI7_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A8: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI8_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A9: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI9_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A10: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI10_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A11: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI11_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A12: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI12_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A13: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI13_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A14: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI14_PA,EXTI4_15_IRQn};
+        case GPIO_Key::A15: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI15_PA,EXTI4_15_IRQn};
+        case GPIO_Key::B0: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI0_PB,EXTI0_1_IRQn};
+        case GPIO_Key::B1: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI1_PB,EXTI0_1_IRQn};
+        case GPIO_Key::B2: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI2_PB,EXTI2_3_IRQn};
+        case GPIO_Key::B3: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI3_PB,EXTI2_3_IRQn};
+        case GPIO_Key::B4: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI4_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B5: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI5_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B6: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI6_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B7: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI7_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B8: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI8_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B9: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI9_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B10: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI10_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B11: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI11_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B12: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI12_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B13: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI13_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B14: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI14_PB,EXTI4_15_IRQn};
+        case GPIO_Key::B15: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI15_PB,EXTI4_15_IRQn};
+        case GPIO_Key::C0: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI0_PC,EXTI0_1_IRQn};
+        case GPIO_Key::C1: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI1_PC,EXTI0_1_IRQn};
+        case GPIO_Key::C2: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI2_PC,EXTI2_3_IRQn};
+        case GPIO_Key::C3: return {&SYSCFG->EXTICR[0],SYSCFG_EXTICR1_EXTI3_PC,EXTI2_3_IRQn};
+        case GPIO_Key::C4: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI4_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C5: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI5_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C6: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI6_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C7: return {&SYSCFG->EXTICR[1],SYSCFG_EXTICR2_EXTI7_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C8: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI8_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C9: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI9_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C10: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI10_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C11: return {&SYSCFG->EXTICR[2],SYSCFG_EXTICR3_EXTI11_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C12: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI12_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C13: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI13_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C14: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI14_PC,EXTI4_15_IRQn};
+        case GPIO_Key::C15: return {&SYSCFG->EXTICR[3],SYSCFG_EXTICR4_EXTI15_PC,EXTI4_15_IRQn};
+
+        case GPIO_Key::INVALID:
+        case GPIO_Key::NUM_GPIO:
+            assert(false);
+            return SHAL_EXTIO_Register(nullptr,0, EXTI4_15_IRQn); //Unreachable
+    }
+    __builtin_unreachable();
+}
+
+constexpr SHAL_Peripheral_Register getGPIORCCEnable(const GPIO_Key g){
+    switch(g) {
+        case GPIO_Key::A0:
+        case GPIO_Key::A1:
+        case GPIO_Key::A2:
+        case GPIO_Key::A3:
+        case GPIO_Key::A4:
+        case GPIO_Key::A5:
+        case GPIO_Key::A6:
+        case GPIO_Key::A7:
+        case GPIO_Key::A8:
+        case GPIO_Key::A9:
+        case GPIO_Key::A10:
+        case GPIO_Key::A11:
+        case GPIO_Key::A12:
+        case GPIO_Key::A13:
+        case GPIO_Key::A14:
+        case GPIO_Key::A15:
+            return {&RCC->AHBENR, RCC_AHBENR_GPIOAEN_Pos};
+        case GPIO_Key::B0:
+        case GPIO_Key::B1:
+        case GPIO_Key::B2:
+        case GPIO_Key::B3:
+        case GPIO_Key::B4:
+        case GPIO_Key::B5:
+        case GPIO_Key::B6:
+        case GPIO_Key::B7:
+        case GPIO_Key::B8:
+        case GPIO_Key::B9:
+        case GPIO_Key::B10:
+        case GPIO_Key::B11:
+        case GPIO_Key::B12:
+        case GPIO_Key::B13:
+        case GPIO_Key::B14:
+        case GPIO_Key::B15:
+            return {&RCC->AHBENR, RCC_AHBENR_GPIOBEN_Pos};
+        case GPIO_Key::C0:
+        case GPIO_Key::C1:
+        case GPIO_Key::C2:
+        case GPIO_Key::C3:
+        case GPIO_Key::C4:
+        case GPIO_Key::C5:
+        case GPIO_Key::C6:
+        case GPIO_Key::C7:
+        case GPIO_Key::C8:
+        case GPIO_Key::C9:
+        case GPIO_Key::C10:
+        case GPIO_Key::C11:
+        case GPIO_Key::C12:
+        case GPIO_Key::C13:
+        case GPIO_Key::C14:
+        case GPIO_Key::C15:
+            return {&RCC->AHBENR, RCC_AHBENR_GPIOCEN_Pos};
+        case GPIO_Key::INVALID:
+        case GPIO_Key::NUM_GPIO:
+            assert(false);
+            return SHAL_Peripheral_Register(nullptr,0); //Unreachable
+    }
+    __builtin_unreachable();
+}
+
+constexpr uint32_t getGPIOPortNumber(const GPIO_Key g){
+    switch(g) {
+        case GPIO_Key::A0:
+        case GPIO_Key::A1:
+        case GPIO_Key::A2:
+        case GPIO_Key::A3:
+        case GPIO_Key::A4:
+        case GPIO_Key::A5:
+        case GPIO_Key::A6:
+        case GPIO_Key::A7:
+        case GPIO_Key::A8:
+        case GPIO_Key::A9:
+        case GPIO_Key::A10:
+        case GPIO_Key::A11:
+        case GPIO_Key::A12:
+        case GPIO_Key::A13:
+        case GPIO_Key::A14:
+        case GPIO_Key::A15:
+            return 0;
+        case GPIO_Key::B0:
+        case GPIO_Key::B1:
+        case GPIO_Key::B2:
+        case GPIO_Key::B3:
+        case GPIO_Key::B4:
+        case GPIO_Key::B5:
+        case GPIO_Key::B6:
+        case GPIO_Key::B7:
+        case GPIO_Key::B8:
+        case GPIO_Key::B9:
+        case GPIO_Key::B10:
+        case GPIO_Key::B11:
+        case GPIO_Key::B12:
+        case GPIO_Key::B13:
+        case GPIO_Key::B14:
+        case GPIO_Key::B15:
+            return 1;
+        case GPIO_Key::C0:
+        case GPIO_Key::C1:
+        case GPIO_Key::C2:
+        case GPIO_Key::C3:
+        case GPIO_Key::C4:
+        case GPIO_Key::C5:
+        case GPIO_Key::C6:
+        case GPIO_Key::C7:
+        case GPIO_Key::C8:
+        case GPIO_Key::C9:
+        case GPIO_Key::C10:
+        case GPIO_Key::C11:
+        case GPIO_Key::C12:
+        case GPIO_Key::C13:
+        case GPIO_Key::C14:
+        case GPIO_Key::C15:
+            return 2;
+        case GPIO_Key::INVALID:
+        case GPIO_Key::NUM_GPIO:
+            assert(false);
+            return 0;
+    }
+    __builtin_unreachable();
+}
+
+
+
+#endif //SHMINGO_HAL_SHAL_GPIO_REG_F072XB_H
--- a/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_TYPES.h
+++ b/SHAL/Include/Peripheral/GPIO/Reg/SHAL_GPIO_TYPES.h
@@ -0,0 +1,29 @@
+//
+// Created by Luca on 9/6/2025.
+//
+
+#ifndef SHAL_GPIO_TYPES_H
+#define SHAL_GPIO_TYPES_H
+
+#include "SHAL_CORE.h"
+
+
+struct SHAL_EXTIO_Register{
+    volatile uint32_t* EXT_ICR;
+    uint32_t mask;
+    IRQn_Type IRQN;
+};
+
+struct SHAL_GPIO_Peripheral {
+    GPIO_TypeDef * reg;
+    unsigned long global_offset;
+};
+
+struct SHAL_Peripheral_Register {
+    volatile uint32_t* reg;
+    unsigned long offset;
+};
+
+
+
+#endif //SHMINGO_HAL_SHAL_GPIO_TYPES_H
--- a/SHAL/Include/Peripheral/GPIO/SHAL_GPIO.h
+++ b/SHAL/Include/Peripheral/GPIO/SHAL_GPIO.h
@@ -0,0 +1,77 @@
+//
+// Created by Luca on 8/29/2025.
+//
+
+#ifndef SHAL_GPIO_H
+#define SHAL_GPIO_H
+
+#include "SHAL_GPIO_REG.h"
+
+#include <cassert>
+
+#include "SHAL_EXTI_CALLBACK.h"
+
+
+
+enum class PinMode : uint8_t{
+    INPUT_MODE,
+    OUTPUT_MODE,
+    ALTERNATE_FUNCTION_MODE,
+    ANALOG_MODE,
+    INVALID
+};
+unsigned long getPinMode(PinMode mode);
+
+enum class TriggerMode : uint8_t{
+    RISING_EDGE,
+    FALLING_EDGE,
+    RISING_FALLING_EDGE
+};
+
+//Abstraction of GPIO registers
+class GPIO{
+
+public:
+
+    void toggle() volatile;
+
+    //TODO replace stupid offset hack from APB
+    void setHigh();
+    void setLow();
+
+private:
+
+    friend class GPIOManager;
+
+    explicit GPIO(GPIO_Key key, PinMode pinMode);
+    GPIO();
+
+    GPIO_Key m_GPIO_KEY = GPIO_Key::INVALID;
+
+};
+
+//Init GPIO for normal use
+#define initGPIO(GPIO_KEY, PIN_MODE) GPIOManager::get(GPIO_KEY, PIN_MODE)
+
+//Init GPIO for use as an external interrupt
+#define useGPIOAsInterrupt(GPIO_KEY, Trigger_Mode, Callback) GPIOManager::getInterruptGPIO(GPIO_KEY, Trigger_Mode, Callback)
+
+//Manages instances of GPIO objects
+class GPIOManager{
+
+public:
+
+    static GPIO& get(GPIO_Key, PinMode pinMode);
+
+    static void getInterruptGPIO(GPIO_Key key, TriggerMode mode, EXTICallback callback);
+
+    GPIOManager() = delete;
+
+private:
+
+inline static GPIO m_gpios[AVAILABLE_PORTS][PINS_PER_PORT] = {{}};
+
+};
+
+
+#endif //SHMINGO_HAL_SHAL_GPIO_H
--- a/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_REG.h
+++ b/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_REG.h
@@ -0,0 +1,44 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHMINGO_HAL_SHAL_TIM_REG_H
+#define SHMINGO_HAL_SHAL_TIM_REG_H
+
+#if defined(STM32F030x6)
+#include "stm32f030x6.h"
+#elif defined(STM32F030x8)
+#include "stm32f030x8.h"
+#elif defined(STM32F031x6)
+#include "stm32f031x6.h"
+#elif defined(STM32F038xx)
+#include "stm32f038xx.h"
+#elif defined(STM32F042x6)
+#include "stm32f042x6.h"
+#elif defined(STM32F048xx)
+#include "stm32f048xx.h"
+#elif defined(STM32F051x8)
+#include "stm32f051x8.h"
+#elif defined(STM32F058xx)
+#include "stm32f058xx.h"
+#elif defined(STM32F070x6)
+#include "stm32f070x6.h"
+#elif defined(STM32F070xB)
+#include "stm32f070xb.h"
+#elif defined(STM32F071xB)
+#include "stm32f071xb.h"
+#elif defined(STM32F072xB)
+#include "SHAL_TIM_REG_F072xB.h"
+#elif defined(STM32F078xx)
+#include "stm32f078xx.h"
+#elif defined(STM32F091xC)
+  #include "stm32f091xc.h"
+#elif defined(STM32F098xx)
+  #include "stm32f098xx.h"
+#elif defined(STM32F030xC)
+  #include "stm32f030xc.h"
+#else
+ #error "Please select first the target STM32F0xx device used in your application (in stm32f0xx.h file)"
+#endif
+
+#endif //SHMINGO_HAL_SHAL_TIM_REG_H
--- a/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_REG_F072xB.h
+++ b/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_REG_F072xB.h
@@ -0,0 +1,95 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_TIM_REG.h
+  * @author  Luca Lizaranzu
+  * @brief   Defines universal macros and objects used across all STM32 families
+  ******************************************************************************
+  */
+
+#ifndef SHAL_TIM_REG_H
+#define SHAL_TIM_REG_H
+
+#include <cassert>
+#include <stm32f072xb.h>
+
+#include "SHAL_CORE.h"
+#include "SHAL_TIM_TYPES.h"
+
+enum class Timer_Key : uint8_t { //For STM32F072
+    S_TIM1,
+    S_TIM2,
+    S_TIM3,
+    S_TIM6,
+    S_TIM7,
+    S_TIM14,
+    S_TIM15,
+    S_TIM16,
+    S_TIM17,
+    NUM_TIMERS,
+    S_TIM_INVALID
+};
+
+
+//Get TIMER_KEY peripheral struct including bus register, enable mask, TIMER_KEY mask
+constexpr TIM_RCC_Enable getTimerRCC(Timer_Key t) {
+    switch(t) {
+        case Timer_Key::S_TIM1:  return {&RCC->APB2ENR, RCC_APB2ENR_TIM1EN_Pos};
+        case Timer_Key::S_TIM2:  return {&RCC->APB1ENR, RCC_APB1ENR_TIM2EN_Pos};
+        case Timer_Key::S_TIM3:  return {&RCC->APB1ENR, RCC_APB1ENR_TIM3EN_Pos};
+        case Timer_Key::S_TIM6:  return {&RCC->APB1ENR, RCC_APB1ENR_TIM6EN_Pos};
+        case Timer_Key::S_TIM7:  return {&RCC->APB1ENR, RCC_APB1ENR_TIM7EN_Pos};
+        case Timer_Key::S_TIM14: return {&RCC->APB1ENR, RCC_APB1ENR_TIM14EN_Pos};
+        case Timer_Key::S_TIM15: return {&RCC->APB2ENR, RCC_APB2ENR_TIM15EN_Pos};
+        case Timer_Key::S_TIM16: return {&RCC->APB2ENR, RCC_APB2ENR_TIM16EN_Pos};
+        case Timer_Key::S_TIM17: return {&RCC->APB2ENR, RCC_APB2ENR_TIM17EN_Pos};
+        case Timer_Key::NUM_TIMERS:
+        case Timer_Key::S_TIM_INVALID:
+            assert(false);
+            return {nullptr, 0};; //Unreachable
+    }
+
+    __builtin_unreachable();
+}
+
+//Get actual register value based on enum
+constexpr volatile TIM_TypeDef* getTimerRegister(Timer_Key t) {
+    switch(t) {
+        case Timer_Key::S_TIM1:  return TIM1;
+        case Timer_Key::S_TIM2:  return TIM2;
+        case Timer_Key::S_TIM3:  return TIM3;
+        case Timer_Key::S_TIM6:  return TIM6;
+        case Timer_Key::S_TIM7:  return TIM7;
+        case Timer_Key::S_TIM14:  return TIM14;
+        case Timer_Key::S_TIM15:  return TIM15;
+        case Timer_Key::S_TIM16:  return TIM16;
+        case Timer_Key::S_TIM17:  return TIM17;
+        case Timer_Key::NUM_TIMERS:
+        case Timer_Key::S_TIM_INVALID:
+            assert(false);
+            return nullptr; //Unreachable
+    }
+    __builtin_unreachable();
+}
+
+constexpr IRQn_Type getIRQn(Timer_Key t) {
+    switch(t) {
+        case Timer_Key::S_TIM1:  return TIM1_BRK_UP_TRG_COM_IRQn;
+        case Timer_Key::S_TIM2:  return TIM2_IRQn;
+        case Timer_Key::S_TIM3:  return TIM3_IRQn;
+        case Timer_Key::S_TIM6:  return TIM6_DAC_IRQn;
+        case Timer_Key::S_TIM7:  return TIM7_IRQn;
+        case Timer_Key::S_TIM14: return TIM14_IRQn;
+        case Timer_Key::S_TIM15: return TIM15_IRQn;
+        case Timer_Key::S_TIM16: return TIM16_IRQn;
+        case Timer_Key::S_TIM17: return TIM17_IRQn;
+        case Timer_Key::NUM_TIMERS:
+        case Timer_Key::S_TIM_INVALID:
+            assert(false);
+            return TIM1_BRK_UP_TRG_COM_IRQn; //Unreachable
+    }
+    __builtin_unreachable();
+}
+
+
+
+#endif
--- a/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_TYPES.h
+++ b/SHAL/Include/Peripheral/Timer/Reg/SHAL_TIM_TYPES.h
@@ -0,0 +1,15 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHMINGO_HAL_SHAL_TIM_TYPES_H
+#define SHMINGO_HAL_SHAL_TIM_TYPES_H
+
+#include "SHAL_CORE.h"
+
+struct TIM_RCC_Enable{
+    volatile uint32_t* busEnableReg;
+    uint32_t offset;
+};
+
+#endif //SHMINGO_HAL_SHAL_TIM_TYPES_H
--- a/SHAL/Include/Peripheral/Timer/SHAL_TIM.h
+++ b/SHAL/Include/Peripheral/Timer/SHAL_TIM.h
@@ -0,0 +1,64 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_TIM.h
+  * @author  Luca Lizaranzu
+  * @brief   Declarations of TIMER_KEY related objects
+  ******************************************************************************
+  */
+
+#ifndef SHAL_TIM_H
+#define SHAL_TIM_H
+
+#include "SHAL_TIM_REG_F072xB.h"
+#include "SHAL_TIM_CALLBACK.h"
+
+#include <array>
+
+class Timer {
+    friend class TimerManager;
+public:
+
+    //Starts the counter
+    void start();
+
+    //Stops the counter
+    void stop();
+
+    //Set prescaler value
+    void setPrescaler(uint16_t presc);
+
+    //Set auto reload register
+    void setARR(uint16_t arr);
+
+    //Enable interrupts
+    void enableInterrupt();
+
+    //Set TIMER_KEY IRQ callback function
+    void setCallbackFunc(TimerCallback callback){
+        registerTimerCallback(TIMER_KEY, callback);
+    }
+
+private:
+
+    explicit Timer(Timer_Key t);
+    Timer();
+
+    Timer_Key TIMER_KEY;
+
+};
+
+
+#define getTimer(timer_key) TimerManager::get(timer_key)
+
+//Manages all timers so user does not have to personally initialize
+class TimerManager{
+public:
+
+    static Timer& get(Timer_Key);
+    TimerManager() = delete;
+
+private:
+    inline static Timer timers[static_cast<int>(Timer_Key::NUM_TIMERS)] = {};
+};
+
+#endif
--- a/SHAL/Include/Peripheral/Timer/SHAL_TIM_CALLBACK.h
+++ b/SHAL/Include/Peripheral/Timer/SHAL_TIM_CALLBACK.h
@@ -0,0 +1,32 @@
+/**
+  ******************************************************************************
+  * @file    SHAL.h
+  * @author  Luca Lizaranzu
+  * @brief   Utilities for creating and populating the TIMER_KEY IRQ callback table
+  * globally, see usage in SHAL_TIM.h. Created in use for singleton TIMER_KEY abstractions
+  ******************************************************************************
+  */
+
+#ifndef SHAL_TIM_CALLBACK_H
+#define SHAL_TIM_CALLBACK_H
+
+#include "SHAL_CORE.h"
+#include "SHAL_TIM_REG.h"
+
+#define DEFINE_TIMER_IRQ(key, irq_handler)                \
+extern "C" void irq_handler(void) {                       \
+    auto tim_reg = getTimerRegister(key);                 \
+    if (tim_reg->SR & TIM_SR_UIF) {                       \
+        tim_reg->SR &= ~TIM_SR_UIF; /* clear flag */      \
+        auto cb = timer_callbacks[static_cast<int>(key)]; \
+        if (cb) cb();                                     \
+    };                                                    \
+};
+
+typedef void (*TimerCallback)(); //Typedef for callback function
+
+[[maybe_unused]] static TimerCallback timer_callbacks[static_cast<int>(Timer_Key::NUM_TIMERS)] = {nullptr}; //Timer IRQ Callback table
+
+void registerTimerCallback(Timer_Key key, TimerCallback callback);
+
+#endif //SHMINGO_HAL_SHAL_TIM_CALLBACK_H
--- a/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG.h
+++ b/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG.h
@@ -0,0 +1,50 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHAL_UART_REG_H
+#define SHAL_UART_REG_H
+
+//
+// Created by Luca on 9/6/2025.
+//
+
+
+#if defined(STM32F030x6)
+#include "stm32f030x6.h"
+#elif defined(STM32F030x8)
+#include "stm32f030x8.h"
+#elif defined(STM32F031x6)
+#include "stm32f031x6.h"
+#elif defined(STM32F038xx)
+#include "stm32f038xx.h"
+#elif defined(STM32F042x6)
+#include "stm32f042x6.h"
+#elif defined(STM32F048xx)
+#include "stm32f048xx.h"
+#elif defined(STM32F051x8)
+#include "stm32f051x8.h"
+#elif defined(STM32F058xx)
+#include "stm32f058xx.h"
+#elif defined(STM32F070x6)
+#include "stm32f070x6.h"
+#elif defined(STM32F070xB)
+#include "stm32f070xb.h"
+#elif defined(STM32F071xB)
+#include "stm32f071xb.h"
+#elif defined(STM32F072xB)
+#include "SHAL_UART_REG_F072xB.h"
+#elif defined(STM32F078xx)
+#include "stm32f078xx.h"
+#elif defined(STM32F091xC)
+  #include "stm32f091xc.h"
+#elif defined(STM32F098xx)
+  #include "stm32f098xx.h"
+#elif defined(STM32F030xC)
+  #include "stm32f030xc.h"
+#else
+ #error "Please select first the target STM32F0xx device used in your application (in stm32f0xx.h file)"
+#endif
+
+
+#endif //SHMINGO_HAL_SHAL_UART_REG_H
--- a/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG_F072xB.h
+++ b/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG_F072xB.h
@@ -0,0 +1,118 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHAL_UART_REG_F072XB_H
+#define SHAL_UART_REG_F072XB_H
+
+#include <stm32f072xb.h>
+#include <cassert>
+
+#include "SHAL_UART_TYPES.h"
+
+#define NUM_USART_LINES 4
+
+//Valid usart Tx and Rx pairings for STM32F072
+enum class UART_Pair : uint8_t{
+    //UART1
+    Tx1A9_Rx1A10,
+    Tx1B6_Rx1B7,
+
+    //UART2
+    Tx2A2_Rx2A3,
+    Tx2A14_Rx2A15,
+
+    //UART3
+    Tx3B10_Rx3B11,
+    Tx3C4_Rx3C5,
+    Tx3C10_Rx3C11,
+
+    //UART4
+    Tx4A0_Rx4A1,
+    Tx4C10_Rx4C11,
+
+    NUM_PAIRS,
+    INVALID
+};
+
+
+constexpr SHAL_UART_Pair getUARTPair(const UART_Pair pair){
+    switch(pair){
+        case UART_Pair::Tx1A9_Rx1A10: return {USART1,GPIO_Key::A9,GPIO_Key::A10,AF_Mask::AF1,AF_Mask::AF1};
+        case UART_Pair::Tx1B6_Rx1B7: return {USART1,GPIO_Key::B6,GPIO_Key::B7,AF_Mask::AF0,AF_Mask::AF0};
+        case UART_Pair::Tx2A2_Rx2A3: return {USART2,GPIO_Key::A2,GPIO_Key::A3,AF_Mask::AF1,AF_Mask::AF1};
+        case UART_Pair::Tx2A14_Rx2A15: return {USART2,GPIO_Key::A14,GPIO_Key::A15,AF_Mask::AF1,AF_Mask::AF1};
+        case UART_Pair::Tx3B10_Rx3B11: return {USART3,GPIO_Key::B10,GPIO_Key::B11,AF_Mask::AF4,AF_Mask::AF4};
+        case UART_Pair::Tx3C4_Rx3C5: return {USART3,GPIO_Key::C4,GPIO_Key::C5,AF_Mask::AF1,AF_Mask::AF1};
+        case UART_Pair::Tx3C10_Rx3C11: return {USART3,GPIO_Key::C10,GPIO_Key::C11,AF_Mask::AF1,AF_Mask::AF1};
+        case UART_Pair::Tx4A0_Rx4A1: return {USART4,GPIO_Key::A0,GPIO_Key::A1,AF_Mask::AF4,AF_Mask::AF4};
+        case UART_Pair::Tx4C10_Rx4C11: return {USART4,GPIO_Key::C10,GPIO_Key::C11,AF_Mask::AF0,AF_Mask::AF0};
+        case UART_Pair::NUM_PAIRS:
+        case UART_Pair::INVALID:
+            assert(false);
+            return {nullptr,GPIO_Key::INVALID,GPIO_Key::INVALID,AF_Mask::AF0,AF_Mask::AF0};
+    }
+    __builtin_unreachable();
+}
+
+constexpr uint8_t getUARTChannel(const UART_Pair pair){
+    switch(pair){
+        case UART_Pair::Tx1A9_Rx1A10:
+        case UART_Pair::Tx1B6_Rx1B7:
+            return 0;
+        case UART_Pair::Tx2A2_Rx2A3:
+        case UART_Pair::Tx2A14_Rx2A15:
+            return 1;
+        case UART_Pair::Tx3B10_Rx3B11:
+        case UART_Pair::Tx3C4_Rx3C5:
+        case UART_Pair::Tx3C10_Rx3C11:
+            return 2;
+        case UART_Pair::Tx4A0_Rx4A1:
+        case UART_Pair::Tx4C10_Rx4C11:
+            return 3;
+        case UART_Pair::NUM_PAIRS:
+        case UART_Pair::INVALID:
+            assert(false);
+            return 0;
+    }
+    __builtin_unreachable();
+}
+
+constexpr SHAL_UART_ENABLE_REG getUARTEnableReg(const UART_Pair pair){
+    switch(pair){
+        case UART_Pair::Tx1A9_Rx1A10:
+        case UART_Pair::Tx1B6_Rx1B7:
+            return {&RCC->APB2ENR,RCC_APB2ENR_USART1EN};
+        case UART_Pair::Tx2A2_Rx2A3:
+        case UART_Pair::Tx2A14_Rx2A15:
+            return {&RCC->APB1ENR,RCC_APB1ENR_USART2EN};
+        case UART_Pair::Tx3B10_Rx3B11:
+        case UART_Pair::Tx3C4_Rx3C5:
+        case UART_Pair::Tx3C10_Rx3C11:
+            return {&RCC->APB1ENR,RCC_APB1ENR_USART3EN};
+        case UART_Pair::Tx4A0_Rx4A1:
+        case UART_Pair::Tx4C10_Rx4C11:
+            return {&RCC->APB1ENR,RCC_APB1ENR_USART4EN};
+        case UART_Pair::NUM_PAIRS:
+        case UART_Pair::INVALID:
+            assert(false);
+            return {nullptr, 0};
+    }
+    __builtin_unreachable();
+}
+
+constexpr uint32_t getAFMask(const AF_Mask mask){
+    switch(mask){
+        case AF_Mask::AF0: return 0x00;
+        case AF_Mask::AF1: return 0x01;
+        case AF_Mask::AF2: return 0x02;
+        case AF_Mask::AF3: return 0x03;
+        case AF_Mask::AF4: return 0x04;
+        case AF_Mask::AF5: return 0x05;
+        case AF_Mask::AF6: return 0x06;
+        case AF_Mask::AF7: return 0x07;
+    }
+    __builtin_unreachable();
+}
+
+#endif //SHMINGO_HAL_SHAL_UART_REG_F072XB_H
--- a/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_TYPES.h
+++ b/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_TYPES.h
@@ -0,0 +1,37 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHAL_UART_TYPES_H
+#define SHAL_UART_TYPES_H
+
+#include "SHAL_CORE.h"
+#include "SHAL_GPIO_REG.h"
+
+enum class AF_Mask : uint8_t{
+    AF0,
+    AF1,
+    AF2,
+    AF3,
+    AF4,
+    AF5,
+    AF6,
+    AF7
+};
+
+//Represents a pair of pins usable for USART Tx + Rx in combination, and their alternate function mapping
+struct SHAL_UART_Pair{
+
+    USART_TypeDef* USARTReg;
+    GPIO_Key TxKey;
+    GPIO_Key RxKey;
+    AF_Mask TxMask;
+    AF_Mask RxMask;
+};
+
+struct SHAL_UART_ENABLE_REG{
+    volatile uint32_t* reg;
+    uint32_t mask;
+};
+
+#endif //SHMINGO_HAL_SHAL_UART_TYPES_H
--- a/SHAL/Include/Peripheral/UART/SHAL_UART.h
+++ b/SHAL/Include/Peripheral/UART/SHAL_UART.h
@@ -0,0 +1,57 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_TIM.h
+  * @author  Luca Lizaranzu
+  * @brief   Relating to UART and USART object abstractions
+  ******************************************************************************
+  */
+
+#ifndef SHMINGO_HAL_SHAL_UART_H
+#define SHMINGO_HAL_SHAL_UART_H
+
+#include "SHAL_UART_REG.h"
+
+class UART{
+
+    friend class UARTManager;
+public:
+
+    //begins Tx and Usart TODO either modify this function or add a new one that supports Rx
+    void begin(uint32_t baudRate) volatile;
+
+    //Sends a string
+    void sendString(const char* s) volatile;
+
+    //Sends a char
+    void sendChar(char c) volatile;
+
+private:
+
+    UART() = default; //Initializer for array
+
+    //Creates a UART based on a pair of two valid U(S)ART pins
+    explicit UART(UART_Pair pair);
+
+    UART_Pair m_UARTPair = UART_Pair::INVALID;
+
+};
+
+
+#define getUART(uart_pair) UARTManager::get(uart_pair)
+
+class UARTManager{
+
+public:
+
+    static UART& get(UART_Pair pair);
+
+
+    UARTManager() = delete;
+
+private:
+
+    inline static UART m_UARTs[NUM_USART_LINES] = {};
+
+};
+
+#endif //SHMINGO_HAL_SHAL_UART_H
--- a/SHAL/Include/SHAL.h
+++ b/SHAL/Include/SHAL.h
@@ -8,8 +8,8 @@
 #ifndef SHAL_H
 #define SHAL_H

-
-
-
+#include "SHAL_TIM.h"
+#include "SHAL_GPIO.h"
+#include "SHAL_UART.h"

 #endif
--- a/SHAL/Src/EXT/SHAL_EXTI_CALLBACK.cpp
+++ b/SHAL/Src/EXT/SHAL_EXTI_CALLBACK.cpp
@@ -0,0 +1,40 @@
+//
+// Created by Luca on 9/3/2025.
+//
+
+#include "SHAL_EXTI_CALLBACK.h"
+
+#if defined(STM32F030x6)
+#elif defined(STM32F030x8)
+#elif defined(STM32F031x6)
+#elif defined(STM32F038xx)
+#elif defined(STM32F042x6)
+#elif defined(STM32F048xx)
+#elif defined(STM32F051x8)
+#elif defined(STM32F058xx)
+#elif defined(STM32F070x6)
+#elif defined(STM32F070xB)
+#elif defined(STM32F071xB)
+#elif defined(STM32F072xB)
+
+DEFINE_MULTI_EXTI_IRQ(0,1);
+DEFINE_MULTI_EXTI_IRQ(2,3);
+DEFINE_MULTI_EXTI_IRQ(4,15);
+
+#elif defined(STM32F078xx)
+#include "stm32f078xx.h"
+#elif defined(STM32F091xC)
+  #include "stm32f091xc.h"
+#elif defined(STM32F098xx)
+  #include "stm32f098xx.h"
+#elif defined(STM32F030xC)
+  #include "stm32f030xc.h"
+#else
+ #error "Please select first the target STM32F0xx device used in your application (in stm32f0xx.h file)"
+#endif
+
+
+//Link function to EXTI line
+void registerEXTICallback(GPIO_Key key, EXTICallback callback){
+    EXTI_callbacks[getGPIORegister(key).global_offset] = callback;
+}
--- a/SHAL/Src/Peripheral/GPIO/SHAL_GPIO.cpp
+++ b/SHAL/Src/Peripheral/GPIO/SHAL_GPIO.cpp
@@ -0,0 +1,118 @@
+//
+// Created by Luca on 8/30/2025.
+//
+
+#include "SHAL_GPIO.h"
+#include "SHAL_EXTI_CALLBACK.h"
+
+unsigned long getPinMode(PinMode mode){
+    switch(mode){
+        case PinMode::INPUT_MODE:
+            return 0b00;
+        case PinMode::OUTPUT_MODE:
+            return 0b01;
+        case PinMode::ALTERNATE_FUNCTION_MODE:
+            return 0b10;
+        case PinMode::ANALOG_MODE:
+            return 0b11;
+        case PinMode::INVALID:
+            assert(false);
+            return 0;
+    }
+    __builtin_unreachable();
+}
+
+
+
+
+GPIO::GPIO() : m_GPIO_KEY(GPIO_Key::INVALID){
+    //Do not initialize anything
+}
+
+GPIO::GPIO(GPIO_Key key, PinMode pinMode) : m_GPIO_KEY(key) {
+
+    SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(key);
+
+    auto gpioRegister = gpioPeripheral.reg;
+    unsigned long registerOffset = gpioPeripheral.global_offset;
+
+    volatile unsigned long* gpioEnable = getGPIORCCEnable(key).reg;
+    unsigned long gpioOffset = getGPIORCCEnable(key).offset;
+
+    *gpioEnable |= (1 << gpioOffset); //Set enable flag
+
+    gpioRegister->MODER &= ~(0b11 << (2 * registerOffset)); //Clear any previous mode
+    gpioRegister->MODER |= (getPinMode(pinMode) << (2 * registerOffset)); //Set mode based on pinmode bit structure
+}
+
+void GPIO::setLow() {
+    auto gpioPeripheral = getGPIORegister(m_GPIO_KEY);
+    gpioPeripheral.reg->ODR &= ~(1 << gpioPeripheral.global_offset);
+}
+
+void GPIO::setHigh() {
+    auto gpioPeripheral = getGPIORegister(m_GPIO_KEY);
+    gpioPeripheral.reg->ODR |= (1 << gpioPeripheral.global_offset);
+}
+
+void GPIO::toggle() volatile {
+    SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
+    gpioPeripheral.reg->ODR ^= (1 << gpioPeripheral.global_offset);
+}
+
+
+
+GPIO& GPIOManager::get(GPIO_Key key, PinMode pinMode) {
+
+    unsigned int gpioPort = getGPIOPortNumber(key);
+    unsigned long gpioPin = getGPIORegister(key).global_offset; //Use existing structs to get offset
+
+    if (m_gpios[gpioPort][gpioPin].m_GPIO_KEY == GPIO_Key::INVALID){
+        m_gpios[gpioPort][gpioPin] = GPIO(key,pinMode);
+    }
+
+    return m_gpios[gpioPort][gpioPin];
+}
+
+void GPIOManager::getInterruptGPIO(GPIO_Key key, TriggerMode triggerMode, EXTICallback callback) {
+
+    uint32_t gpioPort = getGPIOPortNumber(key);
+    uint32_t gpioPin = getGPIORegister(key).global_offset; //Use existing structs to get offset
+
+    if (m_gpios[gpioPort][gpioPin].m_GPIO_KEY == GPIO_Key::INVALID){
+        m_gpios[gpioPort][gpioPin] = GPIO(key,PinMode::INPUT_MODE); //Hardcode input mode for interrupt
+    }
+
+    RCC->APB2ENR |= RCC_APB2ENR_SYSCFGCOMPEN; //Enable EXT, TODO check if this is different across STM32 models
+    NVIC_EnableIRQ(getGPIOEXTICR(key).IRQN); //Enable IRQN for pin
+    EXTI->IMR |= (1 << gpioPin); //Enable correct EXTI line
+
+    SHAL_EXTIO_Register EXTILineEnable = getGPIOEXTICR(key);
+    *EXTILineEnable.EXT_ICR |= EXTILineEnable.mask; //Set bits to enable correct port on correct line TODO Find way to clear bits before
+
+
+    uint32_t rising_mask = 0x00;
+    uint32_t falling_mask = 0x00;
+
+    //Set rising and falling edge triggers based on pin offset (enabled EXTI line)
+    switch(triggerMode){
+        case TriggerMode::RISING_EDGE:
+            rising_mask = 1 << gpioPin;
+            break;
+        case TriggerMode::FALLING_EDGE:
+            falling_mask = 1 << gpioPin;
+            break;
+        case TriggerMode::RISING_FALLING_EDGE:
+            falling_mask = 1 << gpioPin;
+            falling_mask = 1 << gpioPin;
+    }
+
+    //Set triggers
+    EXTI->RTSR |= rising_mask;
+    EXTI->FTSR |= falling_mask;
+
+    //Set callback
+    registerEXTICallback(key,callback);
+
+    __enable_irq(); //Enable IRQ just in case
+}
--- a/SHAL/Src/Peripheral/Timer/SHAL_TIM.cpp
+++ b/SHAL/Src/Peripheral/Timer/SHAL_TIM.cpp
@@ -0,0 +1,54 @@
+//
+// Created by Luca on 8/28/2025.
+//
+
+#include "SHAL_TIM.h"
+#include <cassert>
+
+Timer::Timer(Timer_Key t) : TIMER_KEY(t){
+    TIM_RCC_Enable rcc = getTimerRCC(TIMER_KEY);
+    *rcc.busEnableReg |= (1 << rcc.offset);
+}
+
+Timer::Timer() : TIMER_KEY(Timer_Key::S_TIM_INVALID){
+
+}
+
+void Timer::start() {
+    getTimerRegister(TIMER_KEY)->CR1 |= TIM_CR1_CEN;
+    getTimerRegister(TIMER_KEY)->EGR |= TIM_EGR_UG; //load prescaler reg and ARR
+    enableInterrupt();
+}
+
+void Timer::stop() {
+    getTimerRegister(TIMER_KEY)->CR1 &= ~TIM_CR1_CEN;
+}
+
+void Timer::setPrescaler(uint16_t presc) {
+    getTimerRegister(TIMER_KEY)->PSC = presc;
+}
+
+void Timer::setARR(uint16_t arr) {
+    getTimerRegister(TIMER_KEY)->ARR = arr;
+}
+
+void Timer::enableInterrupt() {
+    getTimerRegister(TIMER_KEY)->DIER |= TIM_DIER_UIE;
+    NVIC_EnableIRQ(getIRQn(TIMER_KEY));
+}
+
+
+Timer &TimerManager::get(Timer_Key timer_key) {
+
+    //Ensure that we don't try to get invalid timers
+    assert(timer_key != Timer_Key::S_TIM_INVALID && timer_key != Timer_Key::NUM_TIMERS);
+
+    Timer& selected = timers[static_cast<int>(timer_key)];
+
+    //Timer queried is not initialized yet (defaults to invalid)
+    if(selected.TIMER_KEY == Timer_Key::S_TIM_INVALID){
+        timers[static_cast<int>(timer_key)] = Timer(timer_key); //Initialize TIMER_KEY
+    }
+
+    return timers[static_cast<int>(timer_key)];
+}
--- a/SHAL/Src/Peripheral/Timer/SHAL_TIM_CALLBACK.cpp
+++ b/SHAL/Src/Peripheral/Timer/SHAL_TIM_CALLBACK.cpp
@@ -0,0 +1,17 @@
+//
+// Created by Luca on 8/28/2025.
+//
+
+#include "SHAL_TIM_CALLBACK.h"
+
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM1, TIM1_BRK_UP_TRG_COM_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM2, TIM2_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM3, TIM3_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM14, TIM14_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM15, TIM15_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM16, TIM16_IRQHandler)
+DEFINE_TIMER_IRQ(Timer_Key::S_TIM17, TIM17_IRQHandler)
+
+void registerTimerCallback(Timer_Key key, TimerCallback callback){
+    timer_callbacks[static_cast<int>(key)] = callback;
+}
--- a/SHAL/Src/Peripheral/UART/SHAL_UART.cpp
+++ b/SHAL/Src/Peripheral/UART/SHAL_UART.cpp
@@ -0,0 +1,82 @@
+/**
+  ******************************************************************************
+  * @file    SHAL_TIM.h
+  * @author  Luca Lizaranzu
+  * @brief   Related to USART and UART abstractions
+  ******************************************************************************
+  */
+
+
+#include "SHAL_UART.h"
+#include "SHAL_GPIO.h"
+
+UART::UART(const UART_Pair pair) : m_UARTPair(pair){
+    SHAL_UART_Pair uart_pair = getUARTPair(pair); //Get the UART_PAIR information to be initialized
+
+    //Get the GPIO pins for this UART setup
+    GPIO_Key Tx_Key = uart_pair.TxKey; //Tx pin
+    GPIO_Key Rx_Key = uart_pair.RxKey; //Rx pin
+
+    uint8_t Tx_Pin = getGPIORegister(Tx_Key).global_offset;
+    uint8_t Rx_Pin = getGPIORegister(Rx_Key).global_offset;
+
+    initGPIO(Tx_Key,PinMode::ALTERNATE_FUNCTION_MODE); //Initialize Tx GPIO with alternate function (initializes GPIO port as well)
+    initGPIO(Rx_Key,PinMode::ALTERNATE_FUNCTION_MODE); //Initialize Rx GPIO with alternate function
+
+    //Determine which AFR register (high or low) to write depending on pin
+    uint8_t TxAFR = Tx_Pin < 8 ? 0 : 1; //Use AFR[0] if pin < 8, AFR[1] if pin >= 8
+    uint8_t RxAFR = Rx_Pin < 8 ? 0 : 1;
+
+    /*Apply Alternate Function masks to the AFR registers for each GPIO to enable alternate functions
+     * The AFR register for GPIO_Typedef* is actually two registers - a low reg and high reg.
+     * The low reg handles pins 0-7, and the high reg handles 8-15.
+     * Each pin gets 4 bits in the register for AFR0 - AFR7. Hence 8 * 4 = 32 bits.
+     * Each AFR is a different function, look at the DATASHEET (not reference manual) to find these alternate function mappings
+     */
+    getGPIORegister(Tx_Key).reg->AFR[TxAFR] |= getAFMask(uart_pair.TxMask) << (4 * (Tx_Pin % 8));
+    getGPIORegister(Rx_Key).reg->AFR[RxAFR] |= getAFMask(uart_pair.RxMask) << (4 * (Rx_Pin % 8));
+
+    SHAL_UART_ENABLE_REG pairUARTEnable = getUARTEnableReg(pair); //Register and mask to enable the UART channel
+
+    *pairUARTEnable.reg |= pairUARTEnable.mask; //Enable UART line
+}
+
+void UART::begin(uint32_t baudRate) volatile {
+
+    USART_TypeDef* usart = getUARTPair(m_UARTPair).USARTReg;
+
+    usart->CR1 &= ~USART_CR1_UE; //Disable USART
+
+    usart->CR1 = 0; //Clear USART config
+
+    usart->CR1 = USART_CR1_TE | USART_CR1_RE; //Tx enable and Rx Enable
+
+    usart->BRR = 8000000 / baudRate; //MAKE SURE ANY FUNCTION THAT CHANGES CLOCK UPDATES THIS!
+
+    usart->CR1 |= USART_CR1_UE;
+
+}
+
+void UART::sendString(const char *s) volatile {
+    while (*s) sendChar(*s++); //Send chars while we haven't reached end of s
+}
+
+void UART::sendChar(char c) volatile {
+
+    USART_TypeDef* usart = getUARTPair(m_UARTPair).USARTReg;
+
+    while(!(usart->ISR & USART_ISR_TXE)); //Wait for usart to finish what it's doing
+
+    usart->TDR = c; //Send character
+}
+
+
+
+UART& UARTManager::get(UART_Pair pair) {
+
+    //Reassign if pair doesn't match
+    if(m_UARTs[getUARTChannel(pair)].m_UARTPair != pair) {
+        m_UARTs[getUARTChannel(pair)] = UART(pair);
+    }
+    return m_UARTs[getUARTChannel(pair)];
+}
--- a/SHAL/Src/System/syscalls.c
+++ b/SHAL/Src/System/syscalls.c
--- a/SHAL/Src/System/sysmem.c
+++ b/SHAL/Src/System/sysmem.c
--- a/SHAL/Src/System/system_stm32f0xx.c
+++ b/SHAL/Src/System/system_stm32f0xx.c
@@ -12,7 +12,7 @@
  *
  *      - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
  *                                  by the user application to setup the SysTick
-  *                                  timer or configure other parameters.
+  *                                  TIMER_KEY or configure other parameters.
  *
  *      - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
  *                                 be called whenever the core clock is changed
@@ -91,11 +91,6 @@
  */
  /* This variable is updated in three ways:
      1) by calling CMSIS function SystemCoreClockUpdate()
-      2) by calling HAL API function HAL_RCC_GetHCLKFreq()
-      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
-         Note: If you use this function to configure the system clock; then there
-               is no need to call the 2 first functions listed above, since SystemCoreClock
-               variable is updated automatically.
  */
 uint32_t SystemCoreClock = 8000000;

@@ -136,7 +131,7 @@ void SystemInit(void)
 /**
   * @brief  Update SystemCoreClock variable according to Clock Register Values.
  *         The SystemCoreClock variable contains the core clock (HCLK), it can
-  *         be used by the user application to setup the SysTick timer or configure
+  *         be used by the user application to setup the SysTick TIMER_KEY or configure
  *         other parameters.
  *
  * @note   Each time the core clock (HCLK) changes, this function must be called
--- a/SHAL/Src/main.cpp
+++ b/SHAL/Src/main.cpp
@@ -0,0 +1,38 @@
+#include "SHAL.h"
+#include "stm32f0xx.h"
+
+
+volatile GPIO* blueLED = nullptr;
+volatile GPIO* greenLED = nullptr;
+volatile UART* uart2;
+
+void c3Interrupt(){
+    greenLED->toggle();
+}
+
+void tim2Handler(){
+    blueLED->toggle();
+}
+
+int main() {
+
+    uart2 = &getUART(UART_Pair::Tx2A2_Rx2A3);
+
+    uart2->begin(115200);
+
+    useGPIOAsInterrupt(GPIO_Key::C3,TriggerMode::RISING_EDGE,c3Interrupt);
+
+    Timer timer2 = getTimer(Timer_Key::S_TIM2);
+
+    blueLED = &initGPIO(GPIO_Key::A4, PinMode::OUTPUT_MODE);
+    greenLED = &initGPIO(GPIO_Key::A5, PinMode::OUTPUT_MODE);
+
+    timer2.setPrescaler(8000 - 1);
+    timer2.setARR(1500 - 1);
+    timer2.setCallbackFunc(tim2Handler);
+    timer2.start();
+
+    while (true) {
+    	__WFI();
+    }
+}
--- a/gcc-arm-none-eabi.cmake
+++ b/gcc-arm-none-eabi.cmake
@@ -0,0 +1,22 @@
+set(CMAKE_SYSTEM_NAME Generic)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+
+set(TOOLCHAIN_PREFIX arm-none-eabi-)
+
+set(CMAKE_C_COMPILER   ${TOOLCHAIN_PREFIX}gcc)
+set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}g++)
+set(CMAKE_ASM_COMPILER ${TOOLCHAIN_PREFIX}gcc)
+
+set(CMAKE_OBJCOPY ${TOOLCHAIN_PREFIX}objcopy)
+set(CMAKE_SIZE    ${TOOLCHAIN_PREFIX}size)
+
+set(COMMON_FLAGS "-mcpu=cortex-m0 -mthumb -fdata-sections -ffunction-sections")
+set(CMAKE_C_FLAGS_INIT   "${COMMON_FLAGS} --specs=nano.specs")
+set(CMAKE_CXX_FLAGS_INIT "${COMMON_FLAGS} -fno-rtti -fno-exceptions -fno-threadsafe-statics --specs=nano.specs")
+
+
+set(CMAKE_EXECUTABLE_SUFFIX_ASM ".elf")
+set(CMAKE_EXECUTABLE_SUFFIX_C ".elf")
+set(CMAKE_EXECUTABLE_SUFFIX_CXX ".elf")
+
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
Author	SHA1	Message	Date
Luca	a599aa5a4e	EXTI interrupt abstraction feature complete	2025-09-08 02:24:02 -07:00
Luca	a02ec044ce	Merged branch UART and changed get function	2025-09-08 00:42:54 -07:00
Luca	368eac7616	Finished basic UART feature	2025-09-07 22:20:37 -07:00
Luca	b2c41e2cb4	Added alternate function inits for USART	2025-09-07 21:30:32 -07:00
Luca	84ab921291	Began UART initializer	2025-09-07 03:54:03 -07:00
Luca	06f0b9303c	Restructured UART directory	2025-09-07 01:59:51 -07:00
Luca	465055fc53	Changed UART reg structs	2025-09-07 01:57:22 -07:00
Luca	40ee0e6834	Combined USART enums	2025-09-06 20:59:27 -07:00
Luca	a0ef9c8b32	Added more enums handling UART/USART functionality	2025-09-06 20:55:25 -07:00
Luca	d763965cb8	Created structs and enums for alternate function UART pins	2025-09-06 19:49:36 -07:00
Luca	f6e21fbd88	Finished EXTI abstraction	2025-09-05 23:57:26 -07:00
Luca	8b4402e4c8	Begin functionality for EXTI callbacks	2025-09-05 21:21:35 -07:00
Luca	64fb4e4a23	Added enum for EXTI bitmasks	2025-09-03 01:34:19 -07:00
Luca	35bc902187	Bare functionality finished for basic GPIO pin abstraction	2025-09-02 00:12:08 -07:00
Luca	db75c06c90	Changed object array to pointer array for GPIOs	2025-09-01 02:29:03 -07:00
Luca	0418e3d5c5	Set up GPIO infrastructure	2025-09-01 01:55:18 -07:00
Luca	33fc098dfc	Changed SHAL_Peripheral to take in a void* of any peripheral struct, and added SHAL_Peripheral_Register for individual registers	2025-08-30 16:57:52 -07:00
Luca	2da3413329	Changed bitmask to offset in peripheral struct to support different register patterns	2025-08-30 15:54:42 -07:00
Luca	19fbe6c0ad	Changed SRC file structure	2025-08-29 23:24:27 -07:00
Luca	098e57eb2f	Added CORE general include header discerning STM32 platform includes and containing global structs and defines	2025-08-29 23:21:56 -07:00
Luca	45abfc6c88	Changed directory structure to eventually support multi-MCU family support - added files	2025-08-29 23:06:44 -07:00
Luca	a0cb980e16	Changed directory structure to eventually support multi-MCU family support	2025-08-29 23:06:22 -07:00
Luca	9cc3cbece4	Removed unused BUS field from RCC_Peripheral struct	2025-08-29 22:51:31 -07:00
Luca	83572b108a	Final changes	2025-08-29 16:37:11 -07:00
Luca	20fdce6d82	File restructure	2025-08-29 01:49:40 -07:00
Luca	d092ccd362	Made timer constructor unaccessable by user	2025-08-28 22:02:08 -07:00
Luca	1e966f0688	Finished Timer IRQ abstraction	2025-08-28 20:56:51 -07:00
Luca	55ca8d5360	Finished Timer IRQ abstraction	2025-08-28 20:56:30 -07:00
Luca	4900cde915	Fixed cmakelists	2025-08-28 13:09:47 -07:00
Luca	8979e1b28a	Start timer abstractions	2025-08-28 02:47:52 -07:00
lucalizaranzu	ed8db95818	Merge pull request 'merge timer' (#1 ) from timer into main Reviewed-on: #1	2025-08-28 06:13:40 +00:00
Luca	1598e13a5a	Cleanup and finish build system	2025-08-27 23:06:57 -07:00
Luca	385d6c3728	Removed compile commands	2025-08-27 18:54:08 -07:00
Luca	6e6add14a8	Switched to CMake	2025-08-27 18:51:19 -07:00
Luca	db9aa71839	Add first timer files	2025-08-26 16:33:54 -07:00