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starfire151
Joined: 01 Apr 2007
Posts: 203
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| Anyone have PWM working with PIC16LF15325? |
 Posted: Mon Apr 07, 2025 6:40 pm |
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Has anyone gotten the PWM to work with the PIC16LF15325?
If so, would you post a very simple code example of the setup? Any frequency, duty cycle, or output pin.
I have tried all traditional methods of getting this to work and they all fail with an output of 0.
Thanks. |
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randy.shaffer
Joined: 21 Mar 2018
Posts: 63
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| Posted: Thu Apr 17, 2025 2:24 pm |
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I don't have that chip to try this code on, but this is the approach that I would take:
| Code: |
#include <16LF15325.h>
#fuses NOWDT
#use delay(internal = 32MHZ)
#use PWM(FREQUENCY=31.25kHz, OUTPUT=PIN_A5, stream = PWM_OUT)
void main()
{
set_tris_a(0b00001011);
pwm_set_duty_percent(PWM_OUT, 500);
pwm_on(PWM_OUT);
while(TRUE)
{
}
} |
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starfire151
Joined: 01 Apr 2007
Posts: 203
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| Posted: Thu Apr 17, 2025 2:57 pm |
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THANK YOU!
That worked!
Apparently my original code specified the output pin through a pin select. This did not work. When I specify the output pin through the #use PWM() function, as your code did, it goes to the right pin and works.
...and I didn't even need to specify setup_timer_2().
Interesting...
Thanks, again! |
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randy.shaffer
Joined: 21 Mar 2018
Posts: 63
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| Posted: Thu Apr 17, 2025 3:02 pm |
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| I'm glad to hear that it worked! The timer can be specified in the #use pwm statement, but timer 2 is the default. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19779
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| Posted: Fri Apr 18, 2025 12:14 am |
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It is almost certainly using CCP1, not PWM3.
The #use pwm function, seems to have some major problems with handling
ECCP or PWM peripherals, rather than the standard CCP. It works on some
chips, but has problems on others. On the ones with problems, you have
to go 'manual', and use the setup functions, rather than the #use. |
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