stm32f051串口问题

只看该作者 · 2015-10-13 11:04

本帖最后由 3goodboy 于 2015-10-13 21:24 编辑

使用stm32f051串口发送数据给电脑，一直接收到DB,而不是我设定的值
麻烦各位帮我分析下是什么问题，库是HAL库
蓝色的是我写的关于串口的代码，褐色是用stm32cubemx生成的，绿色是无关的代码

找到问题了，答案在6楼。感谢大家的回复
代码如下：
#include "stm32f0xx_hal.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

#define TxBUFFERSIZE 1
uint8_t Pwm =12;
void SystemClock_Config(void);
int main(void)
{

/* USER CODE BEGIN 1 */

uint8_t TxBuffer=Pwm;
  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* Configure the system clock */
  SystemClock_Config();
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM1_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
      HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
      HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_1);
      HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_2);
      HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_2);
      HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_3);
      HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_3);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
while (1)
  {
  /* USER CODE END WHILE */
HAL_UART_Transmit(&huart1,(uint8_t *)Pwm,TxBUFFERSIZE,5000);
HAL_Delay(500);
  }
/* USER CODE END 3 */

}

只看该作者 · 2015-10-13 11:09

把这个函数的内容贴出来：MX_USART1_UART_Init();

只看该作者 · 2015-10-13 11:11

xzezhen 发表于 2015-10-13 11:09
把这个函数的内容贴出来：MX_USART1_UART_Init();

void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  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_ONEBIT_SAMPLING_DISABLED ;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  HAL_UART_Init(&huart1);

}