Sub_Spray_STM32/User/BSP/uart_dbg/uart_dbg.cpp

//
// Created by iflyt on 2025/2/27.
//

#include "uart_dbg.h"
#include "bsp.h"
#include "main.h"

UART_HandleTypeDef huart_dbg;

// 初始化调试串口
void DBG_UART_Init(void)
{
    // 使能 GPIO 和 USART 时钟
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_USART1_CLK_ENABLE();

    // 配置 GPIO 为复用功能
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    GPIO_InitStruct.Pin = DBG_UART_TX_PIN | DBG_UART_RX_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed =  GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = DBG_UART_GPIO_AF;
    HAL_GPIO_Init(DBG_UART_GPIO_PORT, &GPIO_InitStruct);

    // 配置 USART
    huart_dbg.Instance = DBG_UART;
    huart_dbg.Init.BaudRate = DBG_UART_BAUDRATE;
    huart_dbg.Init.WordLength = UART_WORDLENGTH_8B;
    huart_dbg.Init.StopBits = UART_STOPBITS_1;
    huart_dbg.Init.Parity = UART_PARITY_NONE;
    huart_dbg.Init.Mode = UART_MODE_TX_RX;
    huart_dbg.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart_dbg.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart_dbg) != HAL_OK)
    {
    	Error_Handler();
    }
}

#ifdef __cplusplus
extern "C" {
#endif

// 重定向 write 函数，实现 printf 重映射
__attribute__((used)) int _write(int file, char *ptr, int len)
{
#if 1
    HAL_UART_Transmit(&huart_dbg, (uint8_t *)ptr, len, HAL_MAX_DELAY);
    return len;
#else
    int i;
    for (i = 0; i < len; i++) {
        uint8_t c = *ptr++;
        HAL_UART_Transmit(&huart_dbg, &c, 1, 100);
    }
    return len;
#endif
}

#ifdef __cplusplus
}
#endif