废话不多说了，直接上代码。

主要介绍led和usart(蓝牙通信)、main的主要代码，亲测有效。

led.c

这里使用LED1(A1)

#include "stm32f10x.h"                  // Device headervoid LED_Init(void)
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStructure);GPIO_SetBits(GPIOA, GPIO_Pin_1 | GPIO_Pin_2);
}void LED1_ON(void)
{GPIO_SetBits(GPIOA, GPIO_Pin_1);
}void LED1_OFF(void)
{GPIO_ResetBits(GPIOA, GPIO_Pin_1);
}void LED1_Turn(void)
{if (GPIO_ReadOutputDataBit(GPIOA, GPIO_Pin_1) == 0){GPIO_SetBits(GPIOA, GPIO_Pin_1);}else{GPIO_ResetBits(GPIOA, GPIO_Pin_1);}
}void LED2_ON(void)
{GPIO_ResetBits(GPIOA, GPIO_Pin_2);
}void LED2_OFF(void)
{GPIO_SetBits(GPIOA, GPIO_Pin_2);
}void LED2_Turn(void)
{if (GPIO_ReadOutputDataBit(GPIOA, GPIO_Pin_2) == 0){GPIO_SetBits(GPIOA, GPIO_Pin_2);}else{GPIO_ResetBits(GPIOA, GPIO_Pin_2);}
}

led.h

#ifndef __LED_H
#define __LED_Hvoid LED_Init(void);
void LED1_ON(void);
void LED1_OFF(void);
void LED1_Turn(void);
void LED2_ON(void);
void LED2_OFF(void);
void LED2_Turn(void);#endif

serial.c

除了初始化函数外，还使用了Serial_GetRxFlag(void)、Serial_GetRxData(void)用于判断和接收蓝牙发送的信息。中断处理函数USART1_IRQHandler。用于发送后清零

#include "stm32f10x.h"                  // Device header
#include <stdio.h>
#include <stdarg.h>uint16_t Serial_RxData;
uint8_t  Serial_RxFlag;/*** @brief  Serial初始化，通信协议为USART* @param  无* @retval 无*/
void Serial_Init(void)
{//开启时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//通信引脚TX初始化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);//通信引脚RX初始化GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStructure);//USART初始化USART_InitTypeDef USART_InitStructure;USART_InitStructure.USART_BaudRate = 9600;USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;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);//启用USART1中断USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//中断分组NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//中断初始化NVIC_InitTypeDef NVIC_InitStructure;NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_Init(&NVIC_InitStructure);//使能USART1USART_Cmd(USART1, ENABLE);
}/*** @brief  发送一个数据* @param  Byte 要发送的数据* @retval 无*/
void Serial_SendByte(uint8_t Byte)
{USART_SendData(USART1, Byte);while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}/*** @brief  发送一组数据* @param  Array 要发送的一组数据* @param  Length 数组大小* @retval 无*/
void Serial_SendArray(uint8_t *Array, uint16_t Length)
{uint16_t i;for (i = 0; i < Length; i ++){Serial_SendByte(Array[i]);}
}/*** @brief  发送一串字符* @param  String 要发送的字符串* @retval 无*/
void Serial_SendString(char *String)
{uint8_t i;for (i = 0; String[i] != '\0'; i++){Serial_SendByte(String[i]);}
}/*** @brief  Bluetooth次方函数* @retval 返回值等于X的Y次方*/
uint32_t Serial_POW(uint32_t X,uint32_t Y)
{uint32_t Result = 1;while (Y--){Result *= X;}return Result;
}
/*** @brief  发送一个数字* @param  Number 要发送的数字* @param  Length 数字长度* @retval 无*/
void Serial_SendNumber(uint32_t Number, uint8_t Length)
{uint8_t i;for (i = 0; i < Length; i ++){Serial_SendByte(Number / Serial_POW(10, Length - i - 1) % 10 + '0');}
}/*** @brief  printf重定向到蓝牙 */
int fputc(int ch,FILE *f)
{Serial_SendByte(ch);return ch;
}/*** @brief  封装Sprintf,直接向蓝牙发送字符串 */
void Serial_Printf(char *format, ...)
{char String[100];va_list arg;va_start(arg,format);vsprintf(String,format,arg);va_end(arg);Serial_SendString(String);
}/*** @brief  接收响应* @param  无* @retval 1--接收成功，0--接收失败*/
uint8_t Serial_GetRxFlag(void)
{if (Serial_RxFlag == 1){Serial_RxFlag = 0;return 1;}return 0;
}/*** @brief  接收数据* @param  无* @retval Bluetooth_RxData 蓝牙发送过来的数据*/
uint8_t Serial_GetRxData(void)
{return Serial_RxData;
}/*** @brief  接收中断函数* @param  无* @retval 无*/
void USART1_IRQHandler(void)
{if (USART_GetITStatus(USART1, USART_IT_RXNE) == SET){Serial_RxData = USART_ReceiveData(USART1);//保存接收到的数据,RXNE自动清零Serial_RxFlag = 1;USART_ClearITPendingBit(USART1, USART_IT_RXNE);}}

serial.h

#ifndef _SERIAL_H
#define _SERIAL_H#include <stdio.h>
#include <string.h>void Serial_Init(void);
void Serial_SendByte(uint8_t Byte);
void Serial_SendArray(uint8_t *Array, uint16_t Length);
void Serial_SendString(char *String);
void Serial_SendNumber(uint32_t Number, uint8_t Length);
void Serial_Printf(char *format, ...);
uint8_t Serial_GetRxFlag(void);
uint8_t Serial_GetRxData(void);#endif

main.c

这里虽然有其它的头文件，但没有使用，我们使用要用的文件即可。

#include "stm32f10x.h"                  // Device header
#include "Delay.h"            //延时
#include "OLED.h"            //OLED模块
#include "LED.h"            //LED灯模块
#include "Serial.h"            //蓝牙通信模块uint16_t AT;    //接收蓝牙发过来的指令
//char SendString[100];        //向蓝牙发送的显示信息
//uint8_t i;int main(void)
{OLED_Init();Serial_Init();LED_Init();    while (1){//erial_SendString(SendString);if (Serial_GetRxFlag() == 1)//判断串口是否有信息{AT = Serial_GetRxData();//接收蓝牙发送的指令        if(AT=='A'){    //接收到字符A，亮灯LED1_ON();Delay_ms(500);}if(AT=='B'){LED1_OFF();Delay_ms(500);}}        }
}