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| Micro Controllers Discuss all aspects of micro controllers - building them, coding them, etc. All controllers are welcome - PIC, BASIC, Z8 Encore!, etc. |
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28th May 2009, 12:59 PM
| #1 |
 ask for help (assembly code) Code: ;************************************************************************************ ; SingleStep - Single Step the motor ; ;************************************************************************************ SingleStep movlw 8 movwf StepModeScaler incf State,f ; Increment motor state movlw 0xFF ; Turn off PWMs movwf CCPR1L movwf CCPR2L movlw 0x30 iorwf CCP1CON,f iorwf CCP1CON,f SingleStateMachine ; jump to motor state based on State pointer movlw high SingleJumpTable movwf PCLATH movf State,w andlw 0x03 addlw low SingleJumpTable btfsc STATUS,C incf PCLATH,f movwf PCL SingleJumpTable goto SingleState0 goto SingleState1 goto SingleState2 goto SingleState3 SingleState0 movlw CTRL1FWD movwf PORTD goto Main SingleState1 movlw CTRL2REV movwf PORTD goto Main SingleState2 movlw CTRL1REV movwf PORTD goto Main SingleState3 movlw CTRL2FWD movwf PORTD goto Main Can anyone explain to me how does it to make stepper motor step??????????????????????? thankyou very much Last edited by fengshao; 28th May 2009 at 12:59 PM. | |
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28th May 2009, 03:44 PM
| #2 |
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Have a look at this and other similar AppNotes from Microchip - they should help you understand the code. http://ww1.microchip.com/downloads/e...tes/00907a.pdf Last edited by Wp100; 28th May 2009 at 03:47 PM. | |
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29th May 2009, 03:50 AM
| #3 | |
| Quote:
Code: SingleStep movlw 8 movwf StepModeScaler incf State,f ; Increment motor state movlw 0xFF ; Turn off PWMs movwf CCPR1L movwf CCPR2L movlw 0x30 iorwf CCP1CON,f iorwf CCP1CON,f SingleStateMachine ; jump to motor state based on State pointer movlw high SingleJumpTable movwf PCLATH movf State,w andlw 0x03 addlw low SingleJumpTable btfsc STATUS,C incf PCLATH,f movwf PCL SingleJumpTable goto SingleState0 goto SingleState1 goto SingleState2 goto SingleState3 SingleState0 movlw CTRL1FWD movwf PORTD goto Main SingleState1 movlw CTRL2REV movwf PORTD goto Main SingleState2 movlw CTRL1REV movwf PORTD goto Main SingleState3 movlw CTRL2FWD movwf PORTD goto Main | ||
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Linear Mode
