F4串口1上传数据总是不正确，我是新手，请各位多多指教，万分感谢！

冷暖自知147 · 发表于 2017-7-1 17:46:33

#include "stm32f4xx.h"
#include "delay.h"

u8 str[] = "Send data Success!";

void uart_init1(u32 bound){
//GPIO¶Ë¿úéèÖÃ
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //ê1ÄüGPIOAê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//ê1ÄüUSART1ê±Öó

//′®¿ú1¶Ôó|òy½Å¸′óÃó3éä
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9¸′óÃÎaUSART1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10¸′óÃÎaUSART1

//USART1¶Ë¿úÅäÖÃ
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; //GPIOA9óëGPIOA10
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸′óÃ1|Äü
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //Ëù¶è50MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //íÆíì¸′óÃêä3ö
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //éÏà-
GPIO_Init(GPIOA,&GPIO_InitStructure); //3õê¼»ˉPA9￡&#172

A10

//USART1 3õê¼»ˉéèÖÃ
USART_InitStructure.USART_BaudRate = bound;//2¨ìØÂêéèÖÃ
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8Î»êy¾Y¸ñê½
USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1Î»
USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæÅ¼D￡ÑéÎ»
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½
USART_Init(USART1, &USART_InitStructure); //3õê¼»ˉ′®¿ú1

USART_Cmd(USART1, ENABLE); //ê1Äü′®¿ú1
}

int main(void)
{
delay_init(168);

uart_init1(9600);

while(1)
{
if(USART_GetFlagStatus(USART1,USART_FLAG_RXNE))
{
USART_ClearFlag(USART1,USART_FLAG_RXNE);
delay_ms(200);
USART_SendData(USART1,0x5127);
while(USART_GetFlagStatus(USART1,USART_FLAG_TC) == 0);
USART_ClearFlag(USART1,USART_FLAG_TC);
delay_ms(200);
}
}
}