串口通信程序示例
#include "stm32f10x.h" // Device header
#include <stdio.h>
#include <stdarg.h>
void Serial_Init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600;//波特率
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无流控
USART_InitStructure.USART_Mode = USART_Mode_Tx;//发送模式
USART_InitStructure.USART_Parity = USART_Parity_No;//无校验位
USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位一位
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//8位1字节
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);//开启串口
}
void Serial_SendByte(uint8_t Byte)//发送字符
{
USART_SendData(USART1, Byte);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}
void Serial_SendArray(uint8_t *Array, uint16_t Length)//发送数组
{
uint16_t i;
for (i = 0; i < Length; i ++)
{
Serial_SendByte(Array[i]);
}
}
void Serial_SendString(char *String)//发送字符串
{
uint8_t i;
for (i = 0; String[i] != '\0'; i ++)
{
Serial_SendByte(String[i]);
}
}
uint32_t Serial_Pow(uint32_t X, uint32_t Y)
{
uint32_t Result = 1;
while (Y --)
{
Result *= X;
}
return Result;
}
void Serial_SendNumber(uint32_t Number, uint8_t Length)//发送数字
{
uint8_t i;
for (i = 0; i < Length; i ++)
{
Serial_SendByte(Number / Serial_Pow(10, Length - i - 1) % 10 + '0');
}
}
int fputc(int ch, FILE *f)//重定向printf
{
Serial_SendByte(ch);
return ch;
}
void Serial_Printf(char *format, ...)//重定向printf多串口使用
{
char String[100];
va_list arg;
va_start(arg, format);
vsprintf(String, format, arg);
va_end(arg);
Serial_SendString(String);
}
| 
楼主
