;==========================================================================*
* File name : main.asm *
* Author: Qu Bo *
* Data: 2006.11.19*
* Version: 2.0 *
* Organization: DSP&EMC,National Key Laboratory of Power Electronics, 
*               Zhejiang University, Hangzhou 310027, China *
* Description : PROGRAM TO CONTROL A ELECTRIC CAR USE F2407A * 

;============================================================================*
        .include "F2407.h"              ;頭文件
        .def    _c_int0
        .bss    TEMP1,1 
        .bss    DATA1,1
        .bss    DATA2,1
        .bss    DATA3,1
        .bss  	GPR0,1
        
;======================================================    
;系統初始化
;使能EVA,EVB,A/D模塊，其他的未使能(根據要求使能)
;====================================================== 
        .text                           ;加密位
        .word   #0ffffh
        .word	#0ffffh
        .word	#0ffffh
        .word	#0ffffh
_c_int0:	
        LDP     #0H
        SETC    INTM                    ;屏蔽總中斷程序
        CLRC    SXM                     ;符號位不作擴展
        LACC    IFR                     ;清標志
        SACL    IFR
        CLRC    CNF                     ;B0為數據存儲區
        SETC    OVM
        LDP     #WDCR>>7
	    SPLK    #006Fh,	WDCR 	        ;看門狗不使能
	    KICK_DOG  
	    SPLK    #0h, GPR0
		OUT     GPR0,WSGR               ;整體不設置延時
	    LDP     #SCSR1>>7
	    SPLK    #0000000010001100B,SCSR1;使能ADC EVA EVB時鐘
	    LDP	    #IMR>>7
	    SPLK    #0001H,IMR              ;中端級2使能
        LDP     #TEMP1
        SPLK    #0FFFFH,TEMP1
        OUT     TEMP1,2000H             ;使I/O控制單元的發光二極管滅    
_DAC:
        KICK_DOG
        LDP     #DATA1
        SPLK	#0,DATA1
LOOP:
        CALL    DAC                     ;調用DAC子程序
        LACL    DATA1
        ADD     #1
        SACL    DATA1 
        SUB	    #72                     ;輸出一個周期數據量
        BNZ	    LOOP
        B       _DAC

DAC:
        LDP     #DATA1
        LACL    DATA1
        ADD     #TABLE2
        TBLR    DATA2
        LACC    DATA2
        ;SFR                             ;DATA2除以2,以改變輸出模擬波形的振幅
        SACL    DATA2
        OUT     DATA2,00000H            ;輸出觸發DA芯片進行DA轉換對應OUT1
        OUT     DATA2,0E000H            ;輸出觸發DA芯片進行DA轉換對應OUT2
        CALL    DELAY                   ;改變延遲時間以改變輸出模擬波形的頻率
 	    NOP
        RET
     
DELAY:
	    LACC	#04H                    ;延時時間量
DELAY1:
	    SUB		#01
	    BCND	DELAY1,NEQ
        RET
		     
TABLE2:
    .word	#0800h         ;0
    .word	#08B2h         ;5
	.word	#0963h         ;10
	.word	#0A12h         ;15
	.word	#0ABCh         ;20
	.word	#0B61h         ;25
	.word	#0C00h         ;30
	.word	#0C96h         ;35
	.word	#0D24h         ;40
	.word	#0DA8h         ;45
	.word	#0E20h         ;50
	.word	#0E80h         ;55
	.word	#0EEDh         ;60
	.word	#0F40h         ;65
	.word	#0F84h         ;70
	.word	#0FBAh         ;75
	.word	#0FE0h         ;80
	.word	#0FF8h         ;85
	.word	#0FFFh         ;90
	.word	#0FF8h         ;95
	.word	#0FE0h         ;100
	.word	#0FBAh         ;105
	.word	#0F84h         ;110
	.word	#0F40h         ;115
	.word	#0EEDh         ;120
	.word	#0E8Dh         ;125
	.word	#0E20h         ;130
	.word	#0DA8h         ;135
	.word   #0D24h         ;140
	.word	#0C96h         ;145
	.word	#0C00h         ;150
	.word	#0B61h         ;155
	.word	#0ABCh         ;160
	.word	#0A12h         ;165
	.word	#0963h         ;170
	.word	#08B2h         ;175
	.word	#0800h         ;180
	.word	#074Eh      
	.word   #069Dh         ;190
	.word	#05EEh         
	.word	#0544h         ;200
	.word	#049Fh         
	.word	#0400h         ;210
	.word	#036Ah         
	.word	#02DCh         ;220
	.word	#0258h         
	.word	#01E0h         ;230
	.word	#0173h         
	.word	#0113h         ;240
	.word	#00C0h         
    .word	#007Ch         ;250
	.word	#0046h         
	.word	#0020h         ;260
	.word   #0008h      
	.word	#0000h         ;270
	.word	#0008h
	.word	#0020h         ;280
	.word	#0046h      
	.word	#007Ch         ;290
	.word	#00C0h      
	.word	#0113h         ;300
	.word	#0173h      
	.word	#01E0h         ;310
	.word	#0258h             
	.word	#02DCh         ;320
	.word	#036Ah         
	.word	#0400h         ;330
	.word	#049Fh         
	.word	#0544h         ;340
	.word	#05EEh         
	.word	#069Dh         ;350
	.word	#074Eh