commrtos.h

基于uCOS-II的串口驱动(用Keil C)

/*
*********************************************************************************************************
*                               基于uC/OS-II的串口驱动及应用程序接口函数
*                                             版权所有
*
* 文件名 : COMMRTOS.H
* 作者   : 陈是知 [e-mail] 北京中软 2005。3。11
*********************************************************************************************************
*/


#define  COMM_RX_BUF_SIZE      64                /* Number of characters in Rx ring buffer             */
#define  COMM_TX_BUF_SIZE      64                /* Number of characters in Tx ring buffer             */


#define  NUL                 0x00
                                                 /* ERROR CODES                                        */
#define  COMM_NO_ERR            0                /* Function call was successful                       */
#define  COMM_BAD_CH            1                /* Invalid communications port channel                */
#define  COMM_RX_EMPTY          2                /* Rx buffer is empty, no character available         */
#define  COMM_TX_FULL           3                /* Tx buffer is full, could not deposit character     */
#define  COMM_TX_EMPTY          4                /* If the Tx buffer is empty.                         */
#define  COMM_RX_TIMEOUT        5                /* If a timeout occurred while waiting for a character*/
#define  COMM_TX_TIMEOUT        6                /* If a timeout occurred while waiting to send a char.*/


#define  COMM_PARITY_NONE       0                /* Defines for setting parity                         */
#define  COMM_PARITY_ODD        1
#define  COMM_PARITY_EVEN       2



INT8U    CommGetChar(INT16U to, INT8U *err) reentrant;
INT8U    CommGetTxChar(INT8U *err) reentrant;
void     CommBufInit(void) reentrant;
BOOLEAN  CommIsEmpty(INT8U ch);
BOOLEAN  CommIsFull(INT8U ch);
INT8U    CommPutChar(INT8U c, INT16U to) reentrant;
void     CommPutRxChar(INT8U c) reentrant;