1，AT指令模式

2，数据透传模式

1、设置模块的名字

void usart3_send_str(char *pbuf)
{
while(pbuf && *pbuf)
{
USART_SendData(USART3,*pbuf++);
while(USART_GetFlagStatus(USART3,USART_FLAG_TXE)==RESET);
}
}

void ble_set_config(void)
{
//配置模块的名字
usart3_send_str("AT+NAMETeacher.Wen\r\n");
delay_ms();
}

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_usart.h"
#include "stdio.h"

static GPIO_InitTypeDef GPIO_InitStructure;
static USART_InitTypeDef USART_InitStructure;
static NVIC_InitTypeDef NVIC_InitStructure;

void delay_us(uint32_t nus)
{
uint32_t temp;
SysTick->LOAD =SystemCoreClock//*nus; //时间加载
SysTick->VAL =0x00; //清空计数器
SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ; //使能滴答定时器开始倒数
do
{
temp=SysTick->CTRL;
}while((temp&0x01)&&!(temp&(<<))); //等待时间到达 SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk; //关闭计数器
SysTick->VAL =0X00; //清空计数器
}

void delay_ms(uint16_t nms)
{
uint32_t temp;
SysTick->LOAD=SystemCoreClock//*nms; //时间加载(SysTick->LOAD为24bit)
SysTick->VAL =0x00; //清空计数器
SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ; //能滴答定时器开始倒数
do
{
temp=SysTick->CTRL;
}while((temp&0x01)&&!(temp&(<<))); //等待时间到达 SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk; //关闭计数器
SysTick->VAL =0X00; //清空计数器
}

void LED_Init(void)
{

//使能GPIOE，GPIOF时钟  
RCC\_AHB1PeriphClockCmd(RCC\_AHB1Periph\_GPIOE | RCC\_AHB1Periph\_GPIOF, ENABLE);            

//GPIOF9,F10初始化设置  
GPIO\_InitStructure.GPIO\_Pin   = GPIO\_Pin\_9 | GPIO\_Pin\_10;        //LED0和LED1对应IO口  
GPIO\_InitStructure.GPIO\_Mode  = GPIO\_Mode\_OUT;                    //普通输出模式，  
GPIO\_InitStructure.GPIO\_OType = GPIO\_OType\_PP;                    //推挽输出，驱动LED需要电流驱动  
GPIO\_InitStructure.GPIO\_Speed = GPIO\_Speed\_100MHz;                //100MHz  
GPIO\_InitStructure.GPIO\_PuPd  = GPIO\_PuPd\_UP;                    //上拉  
GPIO\_Init(GPIOF, &GPIO\_InitStructure);                            //初始化GPIOF，把配置的数据写入寄存器                        

//GPIOE13,PE14初始化设置  
GPIO\_InitStructure.GPIO\_Pin   = GPIO\_Pin\_13 | GPIO\_Pin\_14;        //LED2和LED3对应IO口  
GPIO\_InitStructure.GPIO\_Mode  = GPIO\_Mode\_OUT;                    //普通输出模式  
GPIO\_InitStructure.GPIO\_OType = GPIO\_OType\_PP;                    //推挽输出  
GPIO\_InitStructure.GPIO\_Speed = GPIO\_Speed\_100MHz;                //100MHz  
GPIO\_InitStructure.GPIO\_PuPd  = GPIO\_PuPd\_UP;                    //上拉  
GPIO\_Init(GPIOE, &GPIO\_InitStructure);                            //初始化GPIOE，把配置的数据写入寄存器

GPIO\_SetBits(GPIOF,GPIO\_Pin\_9  | GPIO\_Pin\_10);                    //GPIOF9,PF10设置高，灯灭  
GPIO\_SetBits(GPIOE,GPIO\_Pin\_13 | GPIO\_Pin\_14);  

}

void USART1_Init(uint32_t baud)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE); //使能USART1时钟

//串口1对应引脚复用映射  
GPIO\_PinAFConfig(GPIOA,GPIO\_PinSource9,GPIO\_AF\_USART1);                         //GPIOA9复用为USART1  
GPIO\_PinAFConfig(GPIOA,GPIO\_PinSource10,GPIO\_AF\_USART1);                         //GPIOA10复用为USART1

//USART1端口配置  
GPIO\_InitStructure.GPIO\_Pin = GPIO\_Pin\_9 | GPIO\_Pin\_10;                         //GPIOA9与GPIOA10  
GPIO\_InitStructure.GPIO\_Mode = GPIO\_Mode\_AF;                                    //复用功能  
GPIO\_InitStructure.GPIO\_Speed = GPIO\_Speed\_50MHz;                                //速度50MHz  
GPIO\_InitStructure.GPIO\_OType = GPIO\_OType\_PP;                                     //推挽复用输出  
GPIO\_InitStructure.GPIO\_PuPd = GPIO\_PuPd\_UP;                                     //上拉  
GPIO\_Init(GPIOA,&GPIO\_InitStructure);                                             //初始化PA9，PA10

//USART1 初始化设置  
USART\_InitStructure.USART\_BaudRate = baud;                                        //波特率设置  
USART\_InitStructure.USART\_WordLength = USART\_WordLength\_8b;                        //字长为8位数据格式  
USART\_InitStructure.USART\_StopBits = USART\_StopBits\_1;                            //一个停止位  
USART\_InitStructure.USART\_Parity = USART\_Parity\_No;                                //无奇偶校验位  
USART\_InitStructure.USART\_HardwareFlowControl = USART\_HardwareFlowControl\_None;    //无硬件数据流控制  
USART\_InitStructure.USART\_Mode = USART\_Mode\_Rx | USART\_Mode\_Tx;                    //收发模式  
USART\_Init(USART1, &USART\_InitStructure);                                         //初始化串口1

USART\_Cmd(USART1, ENABLE);                                                      //使能串口1 

USART\_ITConfig(USART1, USART\_IT\_RXNE, ENABLE);                                    //开启相关中断

//Usart1 NVIC 配置  
NVIC\_InitStructure.NVIC\_IRQChannel = USART1\_IRQn;                                //串口1中断通道  
NVIC\_InitStructure.NVIC\_IRQChannelPreemptionPriority=;                            //抢占优先级3  
NVIC\_InitStructure.NVIC\_IRQChannelSubPriority =;                                //子优先级3  
NVIC\_InitStructure.NVIC\_IRQChannelCmd = ENABLE;                                    //IRQ通道使能  
NVIC\_Init(&NVIC\_InitStructure);                                                    //根据指定的参数初始化VIC寄存器  

}

void USART3_Init(uint32_t baud)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE); //使能GPIOB时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE); //使能USART3时钟

//串口3对应引脚复用映射  
GPIO\_PinAFConfig(GPIOB,GPIO\_PinSource10,GPIO\_AF\_USART3);                         //GPIOB10复用为USART3  
GPIO\_PinAFConfig(GPIOB,GPIO\_PinSource11,GPIO\_AF\_USART3);                         //GPIOB11复用为USART3

//USART1端口配置  
GPIO\_InitStructure.GPIO\_Pin = GPIO\_Pin\_10 | GPIO\_Pin\_11;                         //GPIOB10与GPIOB11  
GPIO\_InitStructure.GPIO\_Mode = GPIO\_Mode\_AF;                                    //复用功能  
GPIO\_InitStructure.GPIO\_Speed = GPIO\_Speed\_50MHz;                                //速度50MHz  
GPIO\_InitStructure.GPIO\_OType = GPIO\_OType\_PP;                                     //推挽复用输出  
GPIO\_InitStructure.GPIO\_PuPd = GPIO\_PuPd\_UP;                                     //上拉  
GPIO\_Init(GPIOB,&GPIO\_InitStructure);                                             //初始化PB10，PB11

//USART1 初始化设置  
USART\_InitStructure.USART\_BaudRate = baud;                                        //波特率设置  
USART\_InitStructure.USART\_WordLength = USART\_WordLength\_8b;                        //字长为8位数据格式  
USART\_InitStructure.USART\_StopBits = USART\_StopBits\_1;                            //一个停止位  
USART\_InitStructure.USART\_Parity = USART\_Parity\_No;                                //无奇偶校验位  
USART\_InitStructure.USART\_HardwareFlowControl = USART\_HardwareFlowControl\_None;    //无硬件数据流控制  
USART\_InitStructure.USART\_Mode = USART\_Mode\_Rx | USART\_Mode\_Tx;                    //收发模式  
USART\_Init(USART3, &USART\_InitStructure);                                         //初始化串口3

USART\_Cmd(USART3, ENABLE);                                                      //使能串口3

USART\_ITConfig(USART3, USART\_IT\_RXNE, ENABLE);                                    //开启相关中断

//Usart3 NVIC 配置  
NVIC\_InitStructure.NVIC\_IRQChannel = USART3\_IRQn;                                //串口3中断通道  
NVIC\_InitStructure.NVIC\_IRQChannelPreemptionPriority=;                            //抢占优先级3  
NVIC\_InitStructure.NVIC\_IRQChannelSubPriority =;                                //子优先级3  
NVIC\_InitStructure.NVIC\_IRQChannelCmd = ENABLE;                                    //IRQ通道使能  
NVIC\_Init(&NVIC\_InitStructure);                                                    //根据指定的参数初始化VIC寄存器  

}

//重定义fputc
int fputc(int ch,FILE *f)
{
USART_SendData(USART1,ch);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);

return ch;  

}

void usart1_send_bytes(uint8_t *pbuf,uint32_t len)
{
while(len--)
{
USART_SendData(USART1,*pbuf++);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
}
}

void usart1_send_str(char *pbuf)
{
while(pbuf && *pbuf)
{
USART_SendData(USART1,*pbuf++);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
}
}

void usart3_send_bytes(uint8_t *pbuf,uint32_t len)
{
while(len--)
{
USART_SendData(USART3,*pbuf++);
while(USART_GetFlagStatus(USART3,USART_FLAG_TXE)==RESET);
}
}

void usart3_send_str(char *pbuf)
{
while(pbuf && *pbuf)
{
USART_SendData(USART3,*pbuf++);
while(USART_GetFlagStatus(USART3,USART_FLAG_TXE)==RESET);
}
}

void ble_set_config(void)
{
//配置模块的名字
usart3_send_str("AT+NAMEHELLO\r\n");
delay_ms();
}

int main(void)
{

LED\_Init();        

//系统定时器初始化，时钟源来自HCLK，且进行8分频，  
//系统定时器时钟频率=168MHz/8=21MHz  
SysTick\_CLKSourceConfig(SysTick\_CLKSource\_HCLK\_Div8); 

//设置中断优先级分组2  
NVIC\_PriorityGroupConfig(NVIC\_PriorityGroup\_2);

//串口1,波特率115200bps,开启接收中断  
USART1\_Init();

printf("hello ble at test\\r\\n");

//串口3,波特率9600bps,开启接收中断,蓝牙模块出厂设置为9600bps  
USART3\_Init();    

ble\_set\_config();

while()  
{

}  

}

void USART1_IRQHandler(void) //串口1中断服务程序
{
uint8_t d;

if(USART\_GetITStatus(USART1, USART\_IT\_RXNE) != RESET)      //接收中断  
{  
    //接收数据  
    d = USART\_ReceiveData(USART1);                        

    //发送数据  
    usart3\_send\_bytes(&d,);

} 

}

void USART3_IRQHandler(void) //串口3中断服务程序
{
uint8_t d;

if(USART\_GetITStatus(USART3, USART\_IT\_RXNE) != RESET)      //接收中断  
{  
    //接收数据  
    d = USART\_ReceiveData(USART3);                        

    //发送数据  
    usart1\_send\_bytes(&d,);

} 

}

main.c