hc05蓝牙芯片求助

青芒ARM · 发表于 2018-10-18 20:11:42

设置USART1连接电脑，USART3连接hc05，两个串口分别连接电脑都可以数据互传，但是连上蓝牙死活没有反应。。。
hc05拿的室友的，已经设置好9600的波特率了，求用过hc05的大佬指点迷津！若能解决另支付宝付10元。代码如下：

void uart_init(u32 bound){
  //GPIO端口设置
  GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB, ENABLE); //使能USART1，GPIOA,GPIOB时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //使能USART3时钟

//USART1_TX GPIOA.9
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
  GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.9

  //USART1_RX    GPIOA.10初始化
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PA10
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
  GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.10

   //USART3_TX    GPIOB.10初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PB10
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//浮空输入
  GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB.10

//USART3_RX    GPIOB.11初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//PB11
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
  GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB.11

  //Usart1 NVIC 配置
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //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

//Usart3 NVIC 配置
   NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;//抢占优先级2
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //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
//USART 初始化设置

USART_InitStructure.USART_BaudRate = bound;//串口波特率
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_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启串口接受中断
  USART_Cmd(USART1, ENABLE);                   //使能串口1

USART_InitStructure.USART_BaudRate = 9600;//串口波特率
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_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启串口接受中断
  USART_Cmd(USART3, ENABLE);                   //使能串口1

}

void USART3_IRQHandler(void)             //串口3中断服务程序
{
u8 Res;
#if SYSTEM_SUPPORT_OS //如果SYSTEM_SUPPORT_OS为真，则需要支持OS.
OSIntEnter();
#endif
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)  //接收中断(接收到的数据必须是0x0d 0x0a结尾)
{
Res =USART_ReceiveData(USART3); //读取接收到的数据
//if (Res==0x41) TIM_SetCompare2(TIM3,1749);
//if (Res==0x42) TIM_SetCompare2(TIM3,1950);

USART_RX_BUF[USART_RX_STA]=Res ;
USART_RX_STA++;
//if(USART_RX_STA>0x8000)USART_RX_STA=0;//接收数据错误,重新开始接收
}
}


#endif

int main(void)
{
//u16 led0pwmval=1749;
//u8 dir=1;
u16 len,t;
LED_Init();
delay_init();
beep_int();
uart_init(115200);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
     TIM3_PWM_Init(1999,719);    //不分频。PWM频率=72000000/2000/720=50hz
   TIM_SetCompare2(TIM3,1749);

  //timer_int_init(4999,7199);
printf("welcome");
USART_RX_STA=0;
while(1)
{

len=USART_RX_STA;//得到此次接收到的数据长度

for(t=0;t<len;t++)
{
USART_SendData(USART3, USART_RX_BUF[t]);//向串口1发送数据
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);//等待发送结束
}

USART_RX_STA=0;

delay_ms(10);
}


}