串口环形队列

密耳 · 发表于 2016-10-21 08:43:53

#define  UART1_RBUF_Size    4096 //
u16 UART1_RX_ph;                                           //
u16 UART1_RX_pe;                                           //
u16 UART1_RX_buf_full;                                  //
u8  UART1_RX_BUF[UART1_RBUF_Size] ;             //
//***************************串口1接收环形队列*******************************
void USART1_IRQHandler(void)                      //
{
u8 Res;
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)                         //
{
USART_ClearITPendingBit(USART1,USART_IT_RXNE); //
Res = USART_ReceiveData(USART1);
if(((UART1_RX_ph-UART1_RX_pe)&(UART1_RBUF_Size-1)) == (UART1_RBUF_Size-1))
{
UART1_RX_buf_full = 1;
USART_ITConfig(USART1, USART_IT_RXNE, DISABLE); //
}
else
{
UART1_RX_BUF[UART1_RX_ph] = Res;
UART1_RX_ph++;
UART1_RX_ph &= (UART1_RBUF_Size-1);
}
}
}