stm32串口自动发送HELLO WORLD

ID:586669 · 发表于 2020-4-26 11:03

#include "stm32f10x.h"
#include <stdio.h>
void GPIO_Config( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//
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);
}
void USART_Config(unsigned int usart_baut)
{
USART_InitTypeDef USART_InitStru;
NVIC_InitTypeDef NVIC_InitStru;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); // 中断优先级分组2
NVIC_InitStru.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStru.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStru.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStru.NVIC_IRQChannelSubPriority = 1;
NVIC_Init(&NVIC_InitStru);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE); //最为关键开启时钟
USART_InitStru.USART_BaudRate = usart_baut; //115200
USART_InitStru.USART_WordLength = USART_WordLength_8b;
USART_InitStru.USART_StopBits = USART_StopBits_1;
USART_InitStru.USART_Parity = USART_Parity_No;
USART_InitStru.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStru.USART_Mode = USART_Mode_Tx|USART_Mode_Rx;
USART_Init(USART1,&USART_InitStru);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE); //进行中断配置
USART_Cmd(USART1,ENABLE);//使能串口通信外设
}
int i;
void USART_TxStr(char *Str)
{
while(*Str != '\0')
{
USART_SendData(USART1,*Str);
Str++;
for(i = 0; i < 0xffff; i++);
}
}
//float Out_Voltage = 0;
int main(void)
{
GPIO_Config();
USART_Config(115200);
while(1) //for(;;)
{
USART_TxStr("HELLO WORLD\n");
for(i = 0; i < 0xffff; i++);
}
}

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