Maxim-integrated MAXQ Family Users Guide: MAXQ8913 Supplement Manual do Utilizador descarregar pdf (Página 45)

MAXQ Family User’s Guide:

MAXQ8913 Supplement

10-2

;==============================================================================

;= TxChar - Outputs a character to serial port.

;= Inputs : Acc - Character to send.

TxChar:

move SBUF, Acc ; Send character

TxChar_Loop:

move C, SCON.1 ; Check transmit flag

sjump NC, TxChar_Loop ; Stall until last transmit has completed

move SCON.1, #0 ; Clear the transmit flag

ret

;==============================================================================

;= RxChar - Receives a character from serial port.

;= Outputs : Acc - Character received.

RxChar:

move C, SCON.0 ; Wait for receive flag to be set to 1

sjump NC, RxChar

move Acc, SBUF ; Get received character

move SCON.0, #0 ; Clear receive interrupt flag

ret

Maxim Integrated

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 113 114

Sem comentários

Maxim-integrated MAXQ Family Users Guide: MAXQ8913 Supplement Manual do Utilizador Página 45