菜鸟写一个简单的串口通信 为什么不能实现

hyqhyq

#include  "stm32f10x.h"

void  usart_init(uint32_t bound);

void  USART_IRQHandler(void);

int main(void)

{

    

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

usart_init(9600);

while(1);

return 0;

}

//串口初始化函数

void  usart_init(uint32_t bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

    USART_InitTypeDef  USART_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

//开启时钟

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA,ENABLE);

//串口复位

USART_DeInit(USART1);

//初始化PA9  A10

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;

GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

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);

//初始化串口参数

USART_InitStructure.USART_BaudRate=bound;      

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);

//开启中断  接收数据中断

USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);

//初始化NVIC

NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;

NVIC_InitStructure.NVIC_IRQChannelSubPriority=3;

NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;

NVIC_Init(&NVIC_InitStructure);

//串口使能

USART_Cmd(USART1,ENABLE);

}

//串口中断函数

void  USART_IRQHandler(void)

{

uint8_t res;

if(USART_GetFlagStatus(USART1,USART_FLAG_RXNE)!=RESET)

{

    res=USART_ReceiveData(USART1);

USART_SendData(USART1,res);//这里简单的写了一下  不知道为什么实现不了呢

}

}

jiaozhu

回复【楼主位】hyqhyq:
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STM32中中断函数的名字不是你随便去取的，而是在startup_stm32f10x_hd.s文件中已经规定好了，你自己去找找就知道了。

jermy_z

回复【楼主位】hyqhyq:
---------------------------------
一楼说的对 

有些东西是规定死的  必须按照rule来

wenzhouyxc

中断函数名是规定死的，要对应上才能进入中断

hyqhyq

回复【2楼】jiaozhu:
---------------------------------
恩恩  是的去  我就是在这个文件里面找的  函数名字就是我写的这样的啊

jermy_z

回复【5楼】hyqhyq:
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I2C1_EV_IRQHandler
I2C1_ER_IRQHandler
I2C2_EV_IRQHandler
I2C2_ER_IRQHandler
SPI1_IRQHandler
SPI2_IRQHandler
USART1_IRQHandler
USART2_IRQHandler
USART3_IRQHandler
EXTI15_10_IRQHandler
RTCAlarm_IRQHandler
USBWakeUp_IRQHandler
TIM8_BRK_IRQHandler
TIM8_UP_IRQHandler
TIM8_TRG_COM_IRQHandler
TIM8_CC_IRQHandler
ADC3_IRQHandler
FSMC_IRQHandler
SDIO_IRQHandler
TIM5_IRQHandler


楼主认真点看吧！！

hyqhyq

回复【6楼】jermy_z:
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谢谢  楼主少些了个1  嘿嘿  太粗心了