难道f2 f4的串口1 不能用？

只看该作者 · 2012-1-16 17:47

如题

只看该作者 · 2012-1-16 22:40

可以用啊，用的挺好的

只看该作者 · 2012-1-17 10:26

能不能分享一下啊

只看该作者 · 2012-1-17 10:30

SystemInit();

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
   GPIO_Configuration();
  /* USARTx configured as follow:
      - BaudRate = 115200 baud
      - Word Length = 8 Bits
      - One Stop Bit
      - No parity
      - Hardware flow control disabled (RTS and CTS signals)
      - Receive and transmit enabled
  */
  USART_InitStructure.USART_BaudRate =115200;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

  USART_Init(USART1, &USART_InitStructure);
  USART_Cmd(USART1, ENABLE);

  Uart_PutString(TxBuffer,50);
  /* Output a message on Hyperterminal using printf function */
  printf("\n\r    S-107 USART  Study \n\r");
  printf("\n\r    www.stmsky.com/bbs \n\r");
  printf("\n\r          stm家园 \n\r");
  printf("\n\r    www.stmsky.com/bbs \n\r");
  printf("\n\r  http://shop60442272.taobao.com \n\r");

  while (1)
  {
  }
}
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);

  /* Connect PXx to USARTx_Rx*/
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
  /* Configure USARTx_Tx as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure USARTx_Rx as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

}
/**
  * @brief  Retargets the C library printf function to the USART.
  * @param  None
  * @retval None
  */

u8 Uart_PutChar(u8 ch)
{

USART_SendData(USART1, (u8) ch);
      while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
{}
return ch;

}
void Uart_PutString(u8 buf[],u16 len)
{
u16 i;
for( i=0;i<len;i++)
{
      Uart_PutChar(*buf++);
}

}
PUTCHAR_PROTOTYPE
{

USART_SendData(USART1, (uint8_t) ch);
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
  {}
  /* Loop until the end of transmission */

  return ch;
}