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gaochy1126|

楼主 | 2012-5-24 21:04 | 只看该作者回帖奖励

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ni, USART, SAR, pi, IO

我的串口1出现了什么问题，无法接收到串口信息！
#include "stm32f10x.h"
#include "stm32f10x_conf.h"
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
void Init_GPIO()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA ,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9 ;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void Init_Uart()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 , ENABLE);
USART_InitStructure.USART_BaudRate = 9600;
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_ITConfig(USART1, USART_IT_RXNE, ENABLE);

USART_Cmd(USART1, ENABLE);
}
void Init_NVIC()
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void main()
{
int i;

  SystemInit();
  Init_GPIO();
  Init_Uart();
//  Init_NVIC();
  while(1)
  {
for(i=0;i<19;i++)
  {
USART_SendData(USART1, 0x55);
while( USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET );
  }
  }
}

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