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Re: 有關rs232控制pwm的問題
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新會員
 
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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
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新會員
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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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