void uart3_init(u32 bound)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
//USART3_TX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //PB.10
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//USART3_RX
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//PB11
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//USART
USART_InitStructure.USART_BaudRate = bound;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART3, &USART_InitStructure);
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
USART_Cmd(USART3, ENABLE);
}
u16 USART3_RX_STA=0;
u8 USART3_RX_BUF[USART3_REC_LEN];
void USART3_IRQHandler(void)
{
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)
{
recieve_bluetooth_DATA=USART_ReceiveData(USART3);
if((USART3_RX_STA&0x8000)==0)
{
if(USART3_RX_STA&0x4000)
{
if(recieve_bluetooth_DATA!=0x0a)
USART3_RX_STA=0;
else
{
USART3_RX_STA|=0x8000;
}
}
else
{
if(recieve_bluetooth_DATA==0x0d)USART3_RX_STA|=0x4000;
else
{
USART3_RX_BUF[USART3_RX_STA&0X3FFF]=recieve_bluetooth_DATA ;
USART3_RX_STA ;
if(USART3_RX_STA>(USART3_REC_LEN-1))
USART3_RX_STA=0;
}
}
}
}
}
主函数代码：
蓝牙软件的使用
蓝牙软件的配置
一定要先把软件配置做好，小心出现乱码！！！！
OLED显示
逻辑很简单，就是将串口3的信息显示在OELD上面，只需要读取，然后存入一个变量数组里面就可以。
代码分析：
