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A/D應用的問題
#1
新會員
新會員


查看用戶資訊
前輩們
小弟我是初學者
目前在應用上有個問題 麻煩各位指導
我使用12f675的AN0來做A/D轉換
設定如下

目地在於將A/D轉換後的值
與四個值做比較
再執行相對應的程式

我這樣寫的結果是沒有動作
麻煩幫我看看是那裡出了問題
謝謝!



;初始設定
INITIAL:
CLRF INTCON BSF STATUS,RP0
MOVLW 007H MOVWF OPTION_REG
MOVLW 001H
MOVWF TRISIO
MOVLW B'01100001'
MOVWF ANSEL
MOVLW 0FFH
MOVWF OSCCAL


BCF STATUS,RP0
MOVLW B'00000001'
MOVWF ADCON0

CLRF GPIO
.
.
.
.
;A/D轉換

READ_AD:
BCF STATUS,RP0
BCF STATUS,RP1
BSF ADCON0,GODONE
READ_CDS:
NOP
BTFSC ADCON0,GODONE
GOTO READ_CDS

MOVF ADRESH,W
MOVWF AD_REG
NOP

MOVLW S_HEAD_OFF
SUBWF AD_REG,W
BTFSC STATUS,C
GOTO TURN_OFF_ALL

MOVLW S_HEAD_ON
SUBWF AD_REG,W
BTFSC STATUS,C
GOTO TURN_ON_S

MOVLW L_HEAD_OFF
SUBWF AD_REG,W
BTFSC STATUS,C
GOTO TURN_OFF_L

MOVLW L_HEAD_ON
SUBWF AD_REG,W
BTFSC STATUS,C
GOTO TURN_ON_ALL

.
.
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發表於: 2007/3/27 12:12
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