main.asm

本人下载的电力系统相关资料,具有极其重要的参考价值

;==================================================================================
; The information contained herein is the exclusive property of
; Sunplus Technology Co. And shall not be distributed, reproduced,
; or disclosed in whole in part without prior written permission.
;       (C) COPYRIGHT 2004   SUNPLUS TECHNOLOGY CO.                                  
;                   ALL RIGHTS RESERVED
; The entire notice above must be reproduced on all authorized copies.
;==================================================================================
										
;==================================================================================
;	Project Name	:	
;	Applied Body	:	SPMC65P2404A
;	Firmware version:
;	Programer		:
;	Date			:	2005-1-13
;	Description		:	The program present an example of using PWM as DAC function
;						
;	Hardware Connect:	
;	Link File		:	
;	IDE Version		: 	V1.6.5	
;	BODY Version	:	V1.0.0A
;==================================================================================

.SYNTAX  6502							;Process standard 6502 addressing syntax
.LINKLIST								;Generate linklist information
.SYMBOLS								;Generate symbolic debug information
;************************************************************************************
;*																					*
;*      System Register Define														*
;*																					*
;************************************************************************************
.INCLUDE		SPMC65P2404A.inc				;Define all hardware,Registers and ports. 
;************************************************************************************

;************************************************************************************
;*																					*
;*      Data memory Define	                                                        *
;*																					*
;************************************************************************************
.PAGE0									;Define values in the range from 00h to FFh
;************************************************************************************
.DATA									;Define data storage section           
;************************************************************************************																				*
;*      	 Program Area															*
;***********************************************************************************
.CODE                        
;************************************************************************************
;*																					*
;*      Power on Reset Process	                                                    *
;*																					*
;************************************************************************************
.PUBLIC		V_Reset
V_Reset:
		sei									;Disable interrupt
		ldx		#C_STACK_BOTTOM				;Initial stack pointer at $00FF
		txs									;Transfer to stack point  
		;------------------------------------------------------
		;init PA PC as input
		lda		#0
		sta		P_IOA_Dir
		sta		P_IOA_Attrib
		sta		P_IOA_Data
		sta		P_IOC_Attrib
		sta		P_IOC_Data
		sta		P_IOC_Dir
		
		;------------------------------------------------------
		;Enable PWM1 function
        lda     #C_T1FCS_Div_1				;Timer1 Clock= FCS/1
		sta		P_TMR0_1_Ctrl1
             
        lda     #$FF              			;Timer1 PWM duty low byte register
        sta		P_TMR1_PWMDuty
        
        lda     #$00              			;Timer1 PWM peroid low byte register
        sta		P_TMR1_PWMPeriod

		lda		#C_T112B_PWM				;Set Timer1 is 12-bit PWM
		sta		P_TMR0_1_Ctrl0

L_Main:
		sec
		lda		#$FF
		sbc		P_IOA_Data
		sta		P_TMR1_PWMDuty				;change the low 8 bit duty
		lda		#$FF
		sbc		P_IOC_Data
		asl		a
		asl		a
		asl		a
		asl		a
		sta		P_TMR1_DutyPeriod				;change the high 4 bit duty
		jmp		L_Main	
;************************************************************************************
;*																					*
;*      Interrupt Service Process                         	                        *
;*																					*
;************************************************************************************
V_IRQ:      						
		rti           

V_NMI:
		rti
;************************************************************************************
;*																					*
;*      Interrupt Vector Table														*
;*																					*
;************************************************************************************
VECTOR		.SECTION
		DW		V_NMI						;Non-mask interrupt vector(no use)
		DW		V_Reset						;Reset vector
		DW		V_IRQ						;IRQ interrupt vector
;************************************************************************************
;*																					*
;*      End of Interrupt Vector Table												*
;*																					*
;************************************************************************************
.END