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Re: 有關rs232控制pwm的問題
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: 2006/10/15 15:19 最後登入時間
: 2006/11/14 17:50
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Level : 1 HP : 0 / 18 MP : 2 / 966 EXP : 73
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補充一下,我是用vb送訊號給pic的,再藉由RCREG把值丟到 PORTD裡,由腳位判斷。不知道那有問題
RC_DATA:
BANKSEL RCREG *** <=把值由RCREG丟到PORTD裡 MOVF RCREG,W BANKSEL PORTD MOVWF PORTD RETURN PWM_LOOP:
BANKSEL PORTD BTFSS PORTD,0 ** <=由PORTD腳1來判定腳位的準位來決定那個 GOTO LOOP1 ***** LOOP來送責任周期
發表於: 2006/10/28 23:15
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有關rs232控制pwm的問題
|
|
新會員
Joined
: 2006/10/15 15:19 最後登入時間
: 2006/11/14 17:50
Group:
註冊會員
Level : 1 HP : 0 / 18 MP : 2 / 966 EXP : 73
|
其實小弟不知道是不可以直接寫判斷pord的準位來作變更的pwm的動作對不對。
RC_DATA: BANKSEL RCREG MOVF RCREG,W BANKSEL PORTD MOVWF PORTD PWM_LOOP: BANKSEL PORTD BTFSS PORTD,0 GOTO LOOP1
BANKSEL CCP1CON ;設定PWM模式 MOVLW 0X1C MOVWF CCP1CON
BANKSEL CCPR1L ;設定責任週期 MOVLW .56 MOVWF CCPR1L GOTO PWM_LOOP
發表於: 2006/10/28 13:57
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