为什么我的串口助手上没显示的啊大佬们，中断的没显示我自己写的两个函数串口助手上也没有显示

dyk123 · 发表于 2020-5-19 11:02:27

#include "LED.h"
#include "delay.h"
#include "sys.h"
#include "USART.h"
void MY_USART_Init(void);
void USART_SendByte(USART_TypeDef* USARTx,u8 ch);
void USART_SendString(USART_TypeDef* USARTx,char * str);
int main(void)
{
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
  MY_USART_Init();
USART_SendByte(USART1,'A');
   USART_SendString(USART1,"BBBBB");
   while(1);
}

void USART1_IRQHandler(void)
{
   u8 t;
if(USART_GetITStatus(USART1,USART_IT_RXNE)!=RESET){

   t=USART_ReceiveData(USART1);
USART_SendData(USART1,t);
}

}

#include "USART.h"

void MY_USART_Init(void)
{
   GPIO_InitTypeDef GPIO_InitStructure;
   USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz;
   GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
USART_InitStructure.USART_BaudRate=115200;
USART_InitStructure.USART_HardwareFlowControl=USART_Mode_Rx|USART_Mode_Tx;
USART_InitStructure.USART_Mode=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_Init(USART1,&USART_InitStructure);

USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn ;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=2;
NVIC_Init(&NVIC_InitStructure);

USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1,ENABLE);

}
void USART_SendByte(USART_TypeDef* USARTx,u8 ch)

{

USART_SendData(USARTx,ch);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);

}

void USART_SendString(USART_TypeDef* USARTx,char * str)
{
   unsigned int k=0;


   do{
   USART_SendByte(USARTx,*(str+k));
   k++;
   }while(*(str+k)!='\0');
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);

}