关于STM32L011D4求助

丹心汗青提问时间：2016-9-8 09:50 /

#include "usart.h"

extern void Error_Handler(void);

UART_HandleTypeDef huart2;
UART_HandleTypeDef husart_debug;
UART_HandleTypeDef UartHandle;
void HAL_UART_MspInit(UART_HandleTypeDef* huart)
{

  GPIO_InitTypeDef GPIO_InitStruct;
  if(huart->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspInit 0 */

  /* USER CODE END USART2_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_USART2_CLK_ENABLE();

/**USART2 GPIO Configuration
PA0-CK_IN    ------> USART2_RX
PA9    ------> USART2_TX
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0_USART2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0_USART2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USER CODE BEGIN USART2_MspInit 1 */

  /* USER CODE END USART2_MspInit 1 */
  }

}

void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
{

  if(huart->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspDeInit 0 */

  /* USER CODE END USART2_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART2_CLK_DISABLE();

/**USART2 GPIO Configuration
PA0-CK_IN    ------> USART2_RX
PA9    ------> USART2_TX
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0|GPIO_PIN_9);

  }

}

void MX_USART2_UART_Init(void)
{

__HAL_RCC_GPIOA_CLK_ENABLE();
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  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;
  //HAL_UART_Init(&huart2);
   if (HAL_UART_Init(&UartHandle) != HAL_OK)
  {
/* Initialization Error */
Error_Handler();
  }

}

/**
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  */
int fputc(int ch, FILE *f)
{
  HAL_UART_Transmit(&husart_debug, (uint8_t *)&ch, 1, 0xffff);
  return ch;
}

/**
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  */
int fgetc(FILE * f)
{
  uint8_t ch = 0;
  HAL_UART_Receive(&husart_debug,&ch, 1, 0xffff);
  return ch;
}

int main(void)
{

/* 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_ADC_Init();
      MX_USART2_UART_Init();
      while (1)
{
// I2C_Write(0x0000,1);
      printf("s");
HAL_Delay(500);
}

}

型号是STM32L011什么波形都没有，哪位大神帮忙看下谢谢！