em78p372n_timer1.dt

义隆EM78P372N资料

;**********************************************************************
;利用Timer1定时，P50输出1KHz的方波
;**********************************************************************
;MCU:EM78P372N
;Oscillator:IRC 4MHz
;Clock:2
;WDT: Disable
;编译软件:eUIDE version 1.02.09.07

INCLUDE "EM78P372N.INC"
	ORG		0X00
	JMP		INITIAL  
	ORG		0X50
INITIAL:
	WDTC
	DISI
	BS		S_BANK
	MOV		A,@0X7F
	MOV		SCR,A			;选择4MHz
	BC		S_BANK
	BC		IOCS
	MOV		A,@0X00
	IOW		P5CR			;设定P50为输出口，初始状态为高电压位       
	BS		S_BANK			;切换到bank 1
	MOV		A,@0B00000100
	MOV		TMRCON,A
	MOV		A,@0B00000000	;禁止PWM1
	MOV		PWMCON,A
	MOV		A,@249
	MOV		PRD1,A
	MOV		A,@0X08
	IOW		IMR				;使能PWM1中断
	BS 		T1EN			;定时器1定时开始
	BC		S_BANK
	BS		PORT5,0
main:
	
	JBS		PWM1IF
	JMP		main
	MOV		A,@0XF7
	AND		ISR2,A			;清中断标志位
	MOV		A,@0x01
	XOR		PORT5,A			;P50输出取反
	JMP		main