io_output.asm

来自「范例程序 SONiX」· 汇编 代码 · 共 60 行

chip	sn8p2758


.data

.code
	org	00h
	jmp	main

	org	10h

main:
//================================================================
//	I/O Port set to the output mode -->Low
//================================================================
	mov	a,#00H
	b0mov	p1,a		;P10~P17 set low

	mov	a,#0ffH
	b0mov	p1M,a		;P10~P17 set to the output mode	

//================================================================
//	I/O Port set to the output mode -->High
//================================================================

	mov	A,#0ffH	
	b0mov	p2,a		;P20~P27 set to  high 
	mov	A,#0ffH
	b0mov	p2M,a		;P20~P27 set to the output mode


//================================================================
//	Single PIN set to the output mode --> high
//================================================================

	b0bset	fp50		;P51 set to high
	b0bset	fp50m		;P51 set to the output mode

	b0bset	fp51		;P51 set to high
	b0bset	fp51m		;P51 set to the output mode

//================================================================
//	Single PIN set to the output mode-->low
//================================================================

	b0bclr	fp52		;P52 set to low
	b0bset	fp52m		;P52 set to output mode

	b0bclr	fp53		;P53 set to low
	b0bset	fp53m		;P53 set to output mode
main10:

//================================================================
//
//	User code
//
//================================================================

	jmp	main10