Stm32串口发送字符串数据

来源：互联网发布：集分宝淘宝购物怎么用编辑：程序博客网时间：2024/05/23 00:22
ps:把字符串分成字节循环发送
/**说明：*PA0:KEY1;PA1:KEY2;*PA2:LED1;PA3:LED2;*PA9:USART1_TX;PA10:USART1_RX*/#include "stm32f10x.h"  #include "stm32f10x_rcc.h"  #include "stm32f10x_gpio.h"  #include "stm32f10x_usart.h" #include "stm32f10x_crc.h"#include "system_stm32f10x.h" #include "stdio.h" #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)void RCC_Configuration(void);  void GPIO_Configuration(void); void USART_Configuration(void); void delay_ms(u16 time);void UART_PutChar(USART_TypeDef* USARTx, uint8_t Data);void UART_PutStr (USART_TypeDef* USARTx, uint8_t *str);int main(){    SystemInit();        RCC_Configuration();      GPIO_Configuration();       USART_Configuration();     while(1)    {      printf("\n发送的信息：");      UART_PutStr(USART1, "hello world!");       delay_ms(1000);      }     }void RCC_Configuration(void)    {       RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO,ENABLE);     }     void GPIO_Configuration(void)    {      GPIO_InitTypeDef GPIO_InitStructure;          GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;             //管脚9    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;       //复用推挽输出    GPIO_Init(GPIOA, &GPIO_InitStructure);                //TX初始化        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;            //管脚10    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;         //上拉输入    GPIO_Init(GPIOA, &GPIO_InitStructure);                //RX初始化         GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2|GPIO_Pin_3;//LED GPIO_Pin_All      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;    GPIO_Init(GPIOA, &GPIO_InitStructure);   }void USART_Configuration(void)//串口初始化函数  {      //串口参数初始化        USART_InitTypeDef USART_InitStructure;               //串口设置恢复默认参数      //初始化参数设置      USART_InitStructure.USART_BaudRate = 9600;                  //波特率9600      USART_InitStructure.USART_WordLength = USART_WordLength_8b; //字长8位      USART_InitStructure.USART_StopBits = USART_StopBits_1;      //1位停止字节      USART_InitStructure.USART_Parity = USART_Parity_No;         //无奇偶校验      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无流控制      USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//打开Rx接收和Tx发送功能      USART_Init(USART1,&USART_InitStructure);                   //初始化      USART_Cmd(USART1,ENABLE);                                  //启动串口  }void delay_ms(u16 time)     {      u16 i=0;      while(time--)       {        i=12000;        while(i--);      }    } int putchar(int c)                                            //putchar函数  {      if (c == '\n'){putchar('\r');}                                 //将printf的\n变成\r      USART_SendData(USART1, c);                                   //发送字符      while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET){} //等待发送结束      return c;                                                      //返回值  } void UART_PutChar(USART_TypeDef* USARTx, uint8_t Data){    USART_SendData(USARTx, Data);    while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET){}}void UART_PutStr (USART_TypeDef* USARTx, uint8_t *str)  {      while (0 != *str)      {          UART_PutChar(USARTx, *str);          str++;      }  }
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