RossWaddell
- 11th April 2012, 01:55
(Very much a self-proclaimed noob so please bear with me)
I'm trying to blink an LED to simulate an old incandescent bulb using PWM but want the fade in/fade out part to be a little bit faster than CYCLE = 1 (in the future, I want to use some pots to be able to control this speed on the fly, but I'm not there yet). Is it possible to use values of CYCLE < 1 with PWM and a 12f629?
DUTY VAR BYTE
CYCLE VAR BYTE
LGHTS_ON_MS CON 1500
LGHTS_OFF_MS CON 500
Cycle = 1
lblLoop:
' Fade in
For Duty = 0 TO 255
PWM LED_0, Duty, Cycle
Next
High LED_0
' Stay on LGHTS_ON_MS
Pause LGHTS_ON_MS
' Fade out
For Duty = 255 TO 0 STEP -1
PWM LED_0, Duty, Cycle
Next
' Stay off for LGHTS_OFF_MS
Pause LGHTS_OFF_MS
GoTo lblLoop
End
I'm trying to blink an LED to simulate an old incandescent bulb using PWM but want the fade in/fade out part to be a little bit faster than CYCLE = 1 (in the future, I want to use some pots to be able to control this speed on the fly, but I'm not there yet). Is it possible to use values of CYCLE < 1 with PWM and a 12f629?
DUTY VAR BYTE
CYCLE VAR BYTE
LGHTS_ON_MS CON 1500
LGHTS_OFF_MS CON 500
Cycle = 1
lblLoop:
' Fade in
For Duty = 0 TO 255
PWM LED_0, Duty, Cycle
Next
High LED_0
' Stay on LGHTS_ON_MS
Pause LGHTS_ON_MS
' Fade out
For Duty = 255 TO 0 STEP -1
PWM LED_0, Duty, Cycle
Next
' Stay off for LGHTS_OFF_MS
Pause LGHTS_OFF_MS
GoTo lblLoop
End