PWM trong PIC, 10bit & 8bit khác nhau chỗ nào ?

**trungduc** · 14-12-2010, 09:36 AM

Mình có viết 1 chương trình con về pwm 8 bit nếu coi dùng được không!

PWM_SUBROUTINE

MOVWF CCPR1L
MOVWF CCPR2L

BANKSEL TRISC
MOVLW D'0' ;set PORTC as all outputs
MOVWF TRISC
BANKSEL PORTC
MOVLW 0x0C
MOVWF CCP1CON
MOVLW 0x0C
MOVWF CCP2CON

MOVLW D'63' ;set highest PWM value
BANKSEL PR2 ;over this (63) is permanently on
MOVWF PR2
BANKSEL TMR2

MOVLW 0x00
MOVWF T2CON

BSF T2CON, TMR2ON ;and start the timer running

RETURN

14-12-2010, 09:36 AM	#1
trungduc Đệ tử 2 túi Tham gia ngày: Oct 2008 Bài gửi: 44 :	Mình có viết 1 chương trình con về pwm 8 bit nếu coi dùng được không! PWM_SUBROUTINE MOVWF CCPR1L MOVWF CCPR2L BANKSEL TRISC MOVLW D'0' ;set PORTC as all outputs MOVWF TRISC BANKSEL PORTC MOVLW 0x0C MOVWF CCP1CON MOVLW 0x0C MOVWF CCP2CON MOVLW D'63' ;set highest PWM value BANKSEL PR2 ;over this (63) is permanently on MOVWF PR2 BANKSEL TMR2 MOVLW 0x00 MOVWF T2CON BSF T2CON, TMR2ON ;and start the timer running RETURN