124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
//
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// Created by Luca on 9/7/2025.
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//
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#ifndef SHAL_UART_REG_F072XB_H
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#define SHAL_UART_REG_F072XB_H
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#include <stm32f072xb.h>
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#include <cassert>
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#include "SHAL_UART_TYPES.h"
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#define NUM_USART_LINES 4
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#define SHAL_UART1 UART(1)
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#define SHAL_UART2 UART(2)
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#define SHAL_UART3 UART(3)
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#define SHAL_UART4 UART(4)
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//Valid usart Tx and Rx pairings for STM32F072
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enum class UART_Pair_Key : uint8_t{
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//UART1
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Tx1A9_Rx1A10,
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Tx1B6_Rx1B7,
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//UART2
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Tx2A2_Rx2A3,
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Tx2A14_Rx2A15,
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//UART3
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Tx3B10_Rx3B11,
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Tx3C4_Rx3C5,
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Tx3C10_Rx3C11,
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//UART4
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Tx4A0_Rx4A1,
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Tx4C10_Rx4C11,
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NUM_PAIRS,
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INVALID
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};
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constexpr SHAL_UART_Pair getUARTPair(const UART_Pair_Key pair){
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switch(pair){
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case UART_Pair_Key::Tx1A9_Rx1A10: return {USART1, GPIO_Key::A9, GPIO_Key::A10, GPIO_Alternate_Function::AF1, GPIO_Alternate_Function::AF1};
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case UART_Pair_Key::Tx1B6_Rx1B7: return {USART1, GPIO_Key::B6, GPIO_Key::B7, GPIO_Alternate_Function::AF0, GPIO_Alternate_Function::AF0};
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case UART_Pair_Key::Tx2A2_Rx2A3: return {USART2, GPIO_Key::A2, GPIO_Key::A3, GPIO_Alternate_Function::AF1, GPIO_Alternate_Function::AF1};
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case UART_Pair_Key::Tx2A14_Rx2A15: return {USART2, GPIO_Key::A14, GPIO_Key::A15, GPIO_Alternate_Function::AF1, GPIO_Alternate_Function::AF1};
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case UART_Pair_Key::Tx3B10_Rx3B11: return {USART3, GPIO_Key::B10, GPIO_Key::B11, GPIO_Alternate_Function::AF4, GPIO_Alternate_Function::AF4};
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case UART_Pair_Key::Tx3C4_Rx3C5: return {USART3, GPIO_Key::C4, GPIO_Key::C5, GPIO_Alternate_Function::AF1, GPIO_Alternate_Function::AF1};
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case UART_Pair_Key::Tx3C10_Rx3C11: return {USART3, GPIO_Key::C10, GPIO_Key::C11, GPIO_Alternate_Function::AF1, GPIO_Alternate_Function::AF1};
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case UART_Pair_Key::Tx4A0_Rx4A1: return {USART4, GPIO_Key::A0, GPIO_Key::A1, GPIO_Alternate_Function::AF4, GPIO_Alternate_Function::AF4};
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case UART_Pair_Key::Tx4C10_Rx4C11: return {USART4, GPIO_Key::C10, GPIO_Key::C11, GPIO_Alternate_Function::AF0, GPIO_Alternate_Function::AF0};
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case UART_Pair_Key::NUM_PAIRS:
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case UART_Pair_Key::INVALID:
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assert(false);
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return {nullptr, GPIO_Key::INVALID, GPIO_Key::INVALID, GPIO_Alternate_Function::AF0, GPIO_Alternate_Function::AF0};
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}
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__builtin_unreachable();
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}
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constexpr uint8_t getUARTChannel(const UART_Pair_Key pair){
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switch(pair){
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case UART_Pair_Key::Tx1A9_Rx1A10:
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case UART_Pair_Key::Tx1B6_Rx1B7:
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return 0;
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case UART_Pair_Key::Tx2A2_Rx2A3:
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case UART_Pair_Key::Tx2A14_Rx2A15:
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return 1;
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case UART_Pair_Key::Tx3B10_Rx3B11:
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case UART_Pair_Key::Tx3C4_Rx3C5:
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case UART_Pair_Key::Tx3C10_Rx3C11:
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return 2;
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case UART_Pair_Key::Tx4A0_Rx4A1:
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case UART_Pair_Key::Tx4C10_Rx4C11:
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return 3;
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case UART_Pair_Key::NUM_PAIRS:
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case UART_Pair_Key::INVALID:
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assert(false);
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return 0;
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}
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__builtin_unreachable();
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}
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constexpr SHAL_UART_Enable_Register getUARTEnableReg(const UART_Pair_Key pair){
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switch(pair){
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case UART_Pair_Key::Tx1A9_Rx1A10:
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case UART_Pair_Key::Tx1B6_Rx1B7:
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return {&RCC->APB2ENR,RCC_APB2ENR_USART1EN};
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case UART_Pair_Key::Tx2A2_Rx2A3:
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case UART_Pair_Key::Tx2A14_Rx2A15:
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return {&RCC->APB1ENR,RCC_APB1ENR_USART2EN};
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case UART_Pair_Key::Tx3B10_Rx3B11:
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case UART_Pair_Key::Tx3C4_Rx3C5:
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case UART_Pair_Key::Tx3C10_Rx3C11:
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return {&RCC->APB1ENR,RCC_APB1ENR_USART3EN};
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case UART_Pair_Key::Tx4A0_Rx4A1:
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case UART_Pair_Key::Tx4C10_Rx4C11:
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return {&RCC->APB1ENR,RCC_APB1ENR_USART4EN};
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case UART_Pair_Key::NUM_PAIRS:
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case UART_Pair_Key::INVALID:
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assert(false);
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return {nullptr, 0};
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}
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__builtin_unreachable();
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}
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constexpr uint32_t getAFMask(const GPIO_Alternate_Function mask){
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switch(mask){
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case GPIO_Alternate_Function::AF0: return 0x00;
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case GPIO_Alternate_Function::AF1: return 0x01;
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case GPIO_Alternate_Function::AF2: return 0x02;
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case GPIO_Alternate_Function::AF3: return 0x03;
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case GPIO_Alternate_Function::AF4: return 0x04;
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case GPIO_Alternate_Function::AF5: return 0x05;
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case GPIO_Alternate_Function::AF6: return 0x06;
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case GPIO_Alternate_Function::AF7: return 0x07;
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}
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__builtin_unreachable();
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}
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#endif //SHMINGO_HAL_SHAL_UART_REG_F072XB_H
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