In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:

Calebjo,

Here is a sample program that sets various pins of Port A as outputs and lets you set them high or low.

Thanks,
PeterM


[code]
ifdef __SASM
		DEVICE SX28, turbo, stackx, optionx, OSCHS3 ; Un-comment for SX28 chip
		;DEVICE SX48, OSCHS3 ; Un-comment for SX48 chip
else
		DEVICE SX28L,turbo,stackx_optionx
endif
		FREQ	50_000_000
		RESET   InitSx			;Set reset/boot address

ifdef __SASM
		LIST Q=37;, Q=64 ; This quiets specfic SASM warnings
		irc_cal IRC_FAST
endif

; Control register equates
DIR		equ	$0f

InitSx

org $0

; Get SX ready for setting port pin direction
mode	DIR			; set input/output states

; These are samples of setting different pin(s) as outputs
mov	!ra, #%11111110		;Set PortA pin 0 as output
mov	!ra, #%11111101		;Set PortA pin 1 as output
mov	!ra, #%11110110		;Set PortA pins 3 and 0 as output
jmp @Main

; Everything above this line only needs to be done once in program

; Now you can set port pins high or low

org $200
Main

mov ra, #%11111111		; Port A, all pins high
mov ra, #%11111110		; Port A, pin 0 low
mov ra, #%11110110		; Port A, pins 0 and 3 low

jmp Main

[/code]

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