串口中断

shayingzhe

/*
** These macros are used to identify what events have generated interrupts.
** These are used in the function: 'UARTIntStatus'.
** One of the macro below is returned by 'UARTIntStatus'. Refer to
** definition of 'UARTIntStatus' function for more information.
*/

/* This is used to identify whether FIFO mode is enabled or not.*/
#define UART_FIFOEN_STAT              UART_IIR_FIFOEN

/* This can be used as a mask for the Interrupt Identification(INTID) bits in
* the Interrupt Identification Register(IIR).*/
#define UART_INTID                    UART_IIR_INTID

/* This is used to identify whether Transmitter Empty event has generated an
**  interrupt.
*/
#define UART_INTID_TX_EMPTY           UART_IIR_INTID_THRE                    

/* This is used to identify whether Receiver Data Available event has generated
* an interrupt.*/
#define UART_INTID_RX_DATA            UART_IIR_INTID_RDA                     

/* This is used to identify whether Receiver Line Status event has generated
* an interrupt.*/
#define UART_INTID_RX_LINE_STAT       UART_IIR_INTID_RLS           


/* This is used to identify whether Character Timeout event has generated an
* interrupt.*/
#define UART_INTID_CTI                UART_IIR_INTID_CTI                     

/* This is used to identify whether the servicing of any interrupt is pending
* or not. */
#define UART_INTID_IPEND              UART_IIR_IPEND


/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/* This is used to identify whether Receiver Line Status event has generated
* an interrupt.*/
#define UART_INTID_RX_LINE_STAT       UART_IIR_INTID_RLS  
请问标色的这个是什么事件呢？   我在串口例程里发现说是接收错误，那它是怎么判断有错误呢？      

human

底层有标志位，有错误产生就会触发中断。

shayingzhe

谢谢您的回复