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Re: 18F4520 full bridge reverse mode
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版主
Joined
: 2004/4/30 10:53 最後登入時間
: 2021/11/30 18:11
From CAE, Microchip
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Level : 75 HP : 744 / 1861 MP : 5367 / 111100 EXP : 45
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老實說,我看不懂你的要求,有沒有網友了解其需求?
發表於: 2008/10/16 9:05
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18F4520 full bridge reverse mode
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新會員
Joined
: 2008/8/5 21:49 最後登入時間
: 2008/10/15 21:32
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Level : 1 HP : 0 / 8 MP : 1 / 403 EXP : 34
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TIMER2 初始設定
BCF TRISC,2; BCF TRISD,5; BCF TRISD,6; BCF TRISD,7;
MOVLW .14 MOVWF PR2
MOVLW B'01111100'; MOVWF CCP1CON
MOVLW B'00001000' ; MOVWF CCPR1L MOVLW B'00000000' ; MOVWF PWM1CON BCF TMR2IF,PIR1 BCF ECCP1AS,ECCPASE
BCF TRISC,2; MOVLW B'00000101' ;Timer2 ON MOVWF T2CON
再用此判斷 forward 或 reverse mode FORWARD_BACKWARD_TEMP=2
DECFSZ FORWARD_BACKWARD_TEMP,F ;算DUTYY最大是否低於10% GOTO FORWARD ; GOTO BACKWARD ;
但在reverse mode duty cycle一直沒有 forward mode duty cycle 為正常
為什?? reverse mode duty cylce 要怎設定??
發表於: 2008/10/15 22:10
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