STM32F0 USART和STM32F1不一样吗

zhangyo

/* Includes ------------------------------------------------------------------*/
#include "usart.h"
#include "main.h"


UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
/* USART1 init function */

void MX_USART1_UART_Init(void)
{
        MX_USART1_GPIO_Init();
  __HAL_RCC_USART1_CLK_ENABLE();
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 38400;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
        HAL_NVIC_SetPriority(USART1_IRQn, 1, 0);
  HAL_NVIC_EnableIRQ(USART1_IRQn);
}

void MX_USART1_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  __HAL_RCC_GPIOA_CLK_ENABLE();
  GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF1_USART1;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}


void MX_USART2_UART_Init(void)
{
        MX_USART2_GPIO_Init();
  __HAL_RCC_USART2_CLK_ENABLE();
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 38400;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
        HAL_NVIC_SetPriority(USART2_IRQn, 1,1);
  HAL_NVIC_EnableIRQ(USART2_IRQn);
}


void MX_USART2_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  __HAL_RCC_GPIOA_CLK_ENABLE();
  GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

#if 1
#pragma import(__use_no_semihosting)  

struct __FILE
{
        int handle;
};

FILE __stdout;      
//定义_sys_exit()以避免使用半主机模式   
void _sys_exit(int x)
{
        x = x;
}
//重定义fputc函数
int fputc(int ch, FILE *f)
{        
        while((USART1->ISR&0X40)==0);//循环发送,直到发送完毕   
        USART1->RDR =(uint8_t) ch;      
        return ch;
}

#endif
大家帮我看看那里有错，打印函数不能用