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alan
Joined: 12 Nov 2012
Posts: 357
Location: South Africa
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| SOLVED: dsPIC33CK64MP205 HSPWM |
 Posted: Thu Mar 05, 2020 10:06 am |
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Good day.
Battling to get the high speed PWM to work on this chip.
I get no output on the pin, it stays low.
It is probably something stupid I am missing, but I am out of ideas.
| Code: | #include <33CK64MP205.h>
#FUSES NOWDT //No Watch Dog Timer
#FUSES NOPROTECT
#use delay(internal=80MHz)
void main(void) {
setup_hspwm(HSPWM_CLOCK_FOSC | HSPWM_CLOCK_DIV_BY_16, 5000);
setup_hspwm_unit(5, HSPWM_ENABLE | HSPWM_COMPLEMENTARY | HSPWM_USES_MASTER_CLOCK);
set_hspwm_period(5,5000);
set_hspwm_duty(5, 1250);
while (TRUE) {
output_toggle(PIN_B8); //running at correct speed
delay_ms(250);
}
}
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Last edited by alan on Fri Mar 06, 2020 1:09 am; edited 1 time in total |
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alan
Joined: 12 Nov 2012
Posts: 357
Location: South Africa
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| Posted: Thu Mar 05, 2020 2:21 pm |
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Ok got it to at least output a PWM.
However you have to disable and then re-enable the HSPWM unit after a duty cycle change. So still looking to what are wrong in the setup. |
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alan
Joined: 12 Nov 2012
Posts: 357
Location: South Africa
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| Posted: Fri Mar 06, 2020 1:09 am |
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At last.
You have to either disable or setup the other hspwm units.
and add
| Code: | | PGxEVTL = 0b00001000; |
or call
when you have updated any registers. |
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