tx_serial.asm

测量脉搏的源码 Cypress公司使用 CY27443 完成相关的功能

;;*****************************************************************************
;;*****************************************************************************
;;  FILENAME: TX_SERIAL.asm
;;   Version: 2.2, Updated on 2003/11/18 at 15:02:31
;;  Generated by PSoC Designer ver 4.1 BETA b923 : 11 December, 2003
;;
;;  DESCRIPTION: TX8 User Module software implementation file
;;               for 22/24/25/26/27xxx PSoc family of devices.
;;
;;  NOTE: User Module APIs conform to the fastcall convention for marshalling
;;        arguments and observe the associated "Registers are volatile" policy.
;;        This means it is the caller's responsibility to preserve any values
;;        in the X and A registers that are still needed after the API
;;        function returns. Even though these registers may be preserved now,
;;        there is no guarantee they will be preserved in future releases.
;;-----------------------------------------------------------------------------
;;  Copyright (c) Cypress MicroSystems 2000-2003. All Rights Reserved.
;;*****************************************************************************
;;*****************************************************************************

;-----------------------------------------------
; include instance specific register definitions
;-----------------------------------------------
include "m8c.inc"
include "TX_SERIAL.inc"

area UserModules (ROM, REL)
;-----------------------------------------------
;  Global Symbols
;-----------------------------------------------
export   TX_SERIAL_EnableInt
export  _TX_SERIAL_EnableInt
export   TX_SERIAL_DisableInt
export  _TX_SERIAL_DisableInt
export   TX_SERIAL_Start
export  _TX_SERIAL_Start
export   TX_SERIAL_Stop
export  _TX_SERIAL_Stop
export   TX_SERIAL_SendData
export  _TX_SERIAL_SendData
export   TX_SERIAL_bReadTxStatus
export  _TX_SERIAL_bReadTxStatus

// Old labels, will be removed in future release
// Do Not Use.
export   bTX_SERIAL_ReadTxStatus
export  _bTX_SERIAL_ReadTxStatus

;-----------------------------------------------
;  EQUATES
;-----------------------------------------------
bfCONTROL_REG_START_BIT:   equ   1     ; Control register start bit

AREA UserModules (ROM, REL)

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_EnableInt
;
;  DESCRIPTION:
;     Enables this Transmitter's interrupt by setting the interrupt enable mask
;     bit associated with this User Module. Remember to call the global interrupt
;     enable function by using the macro: M8C_EnableGInt.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS: none
;
;  RETURNS: none
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;     Sets the specific user module interrupt enable mask bit.
;
;-----------------------------------------------------------------------------
 TX_SERIAL_EnableInt:
_TX_SERIAL_EnableInt:
   M8C_EnableIntMask  TX_SERIAL_INT_REG, TX_SERIAL_bINT_MASK
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_DisableInt
;
;  DESCRIPTION:
;     Disables this TX8's interrupt by clearing the interrupt enable mask bit
;     associated with this User Module.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:  none
;
;  RETURNS:  none
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;     Clears the specific user module interrupt enable mask bit.
;
;-----------------------------------------------------------------------------
 TX_SERIAL_DisableInt:
_TX_SERIAL_DisableInt:
   M8C_DisableIntMask TX_SERIAL_INT_REG, TX_SERIAL_bINT_MASK
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_Start(BYTE bParity)
;
;  DESCRIPTION:
;     Sets the start bit and parity in the Control register of this user module.
;     The transmitter will begin transmitting if a byte has been written into the
;     transmit buffer.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;    BYTE bParity - parity of transmitted data.  Use defined masks.
;
;  RETURNS:  none
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;     Set the specified parity and start bits in the Control register.
;
;-----------------------------------------------------------------------------
 TX_SERIAL_Start:
_TX_SERIAL_Start:
   or    A, bfCONTROL_REG_START_BIT
   mov   REG[TX_SERIAL_CONTROL_REG], A
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_Stop
;
;  DESCRIPTION:
;     Disables TX8 operation.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:  none
;
;  RETURNS:  none
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;     Clear the start bit in the Control register.
;
;-----------------------------------------------------------------------------
 TX_SERIAL_Stop:
_TX_SERIAL_Stop:
   and   REG[TX_SERIAL_CONTROL_REG], ~bfCONTROL_REG_START_BIT
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_SendData
;
;  DESCRIPTION:
;     Sends one byte through serial port.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;     BYTE  TxData - data to transmit.
;
;  RETURNS:
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;-----------------------------------------------------------------------------
 TX_SERIAL_SendData:
_TX_SERIAL_SendData:
        mov REG[TX_SERIAL_TX_BUFFER_REG], A
        ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: TX_SERIAL_bReadTxStatus
;
;  DESCRIPTION:
;     Reads the Tx Status bits in the Control/Status register.
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;
;  RETURNS:
;     BYTE  bTxStatus - transmit status data.  Use the following defined bits
;                       masks: TX_COMPLETE and TX_BUFFER_EMPTY
;
;  SIDE EFFECTS:
;    REGISTERS ARE VOLATILE:  A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;     Read the status and control register.
;
;-----------------------------------------------------------------------------
 TX_SERIAL_bReadTxStatus:
_TX_SERIAL_bReadTxStatus:
 bTX_SERIAL_ReadTxStatus:
_bTX_SERIAL_ReadTxStatus:
        mov A,  REG[TX_SERIAL_CONTROL_REG]
        ret

.ENDSECTION
; End of File TX_SERIAL.asm