Finished UART refactor

2025-10-17 02:23:56 -07:00
parent d846897296
commit 04f79cc543
10 changed files with 199 additions and 58 deletions
--- a/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG_L432KC.h
+++ b/SHAL/Include/Peripheral/UART/Reg/SHAL_UART_REG_L432KC.h
@@ -0,0 +1,104 @@
+//
+// Created by Luca on 9/7/2025.
+//
+
+#ifndef SHAL_UART_REG_L432KC_H
+#define SHAL_UART_REG_L432KC_H
+
+#include <stm32l432xx.h>
+#include <cassert>
+
+#include "SHAL_UART_TYPES.h"
+
+#define NUM_USART_LINES 4
+
+#define SHAL_UART1 UART(1)
+#define SHAL_UART2 UART(2)
+
+
+//Valid usart Tx and Rx pairings for STM32L432KC
+enum class UART_Pair_Key : uint8_t{
+    //UART1
+    Tx1A9_Rx1A10,
+    Tx1B6_Rx1B7,
+
+    //UART2
+    Tx2A2_Rx2A3,
+
+    NUM_PAIRS,
+    INVALID
+};
+
+
+static inline SHAL_UART_Pair getUARTPair(const UART_Pair_Key pair){
+    switch(pair){
+        case UART_Pair_Key::Tx1A9_Rx1A10: return {USART1, GPIO_Key::A9, GPIO_Key::A10, GPIO_Alternate_Function::AF7, GPIO_Alternate_Function::AF7};
+        case UART_Pair_Key::Tx1B6_Rx1B7: return {USART1, GPIO_Key::B6, GPIO_Key::B7, GPIO_Alternate_Function::AF7, GPIO_Alternate_Function::AF7};
+        case UART_Pair_Key::Tx2A2_Rx2A3: return {USART2, GPIO_Key::A2, GPIO_Key::A3, GPIO_Alternate_Function::AF7, GPIO_Alternate_Function::AF7};
+
+        case UART_Pair_Key::NUM_PAIRS:
+        case UART_Pair_Key::INVALID:
+            __builtin_unreachable();
+    }
+    __builtin_unreachable();
+}
+
+static inline uint8_t getUARTChannel(const UART_Pair_Key pair){ //TODO remove?
+    switch(pair){
+        case UART_Pair_Key::Tx1A9_Rx1A10:
+        case UART_Pair_Key::Tx1B6_Rx1B7:
+            return 0;
+        case UART_Pair_Key::Tx2A2_Rx2A3:
+            return 1;
+        case UART_Pair_Key::NUM_PAIRS:
+        case UART_Pair_Key::INVALID:
+            assert(false);
+            return 0;
+    }
+    __builtin_unreachable();
+}
+
+constexpr SHAL_UART_Enable_Register getUARTEnableReg(const UART_Pair_Key pair){
+    switch(pair){
+        case UART_Pair_Key::Tx1A9_Rx1A10:
+        case UART_Pair_Key::Tx1B6_Rx1B7:
+            return {&RCC->APB2ENR,RCC_APB2ENR_USART1EN};
+        case UART_Pair_Key::Tx2A2_Rx2A3:
+            return {&RCC->APB1ENR1,RCC_APB1ENR1_USART2EN};
+        case UART_Pair_Key::NUM_PAIRS:
+        case UART_Pair_Key::INVALID:
+            assert(false);
+            return {nullptr, 0};
+    }
+    __builtin_unreachable();
+}
+
+static inline SHAL_UART_Control_Register_1 getUARTControlRegister1(UART_Pair_Key key){
+    SHAL_UART_Control_Register_1 res = {nullptr, USART_CR1_UE, USART_CR1_TE, USART_CR1_RE};
+
+    res.reg = &getUARTPair(key).USARTReg->CR1;
+    return res;
+};
+
+static inline SHAL_UART_Baud_Rate_Generation_Register getUARTBaudRateGenerationRegister(UART_Pair_Key key){
+    SHAL_UART_Baud_Rate_Generation_Register res = {nullptr, 1UL << 15}; //TODO un-hardcode if other devices have wider baud rate allowances
+
+    res.reg = &getUARTPair(key).USARTReg->BRR;
+    return res;
+};
+
+static inline SHAL_UART_Transmit_Data_Register getUARTTransmitDataRegister(UART_Pair_Key key){
+    SHAL_UART_Transmit_Data_Register res = {nullptr, 1UL << 15}; //TODO un-hardcode if other devices have wider baud rate allowances
+
+    res.reg = &getUARTPair(key).USARTReg->TDR;
+    return res;
+};
+
+static inline SHAL_UART_ISR_FIFO_Disabled getUARTISRFifoDisabled(UART_Pair_Key key){
+    SHAL_UART_ISR_FIFO_Disabled res = {nullptr, USART_ISR_TXE};
+
+    res.reg = &getUARTPair(key).USARTReg->ISR;
+    return res;
+};
+
+#endif //SHAL_UART_REG_F072XB_H