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Forum Index : Microcontroller and PC projects : UBW32 PWM

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Dinosaur

Guru

Joined: 12/08/2011
Location: Australia
Posts: 333
Posted: 07:57pm 26 Oct 2014
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Hi All

I am trying to make the PWM work on the UBW32, with C32 MX795 image in it.

As I can't locate any examples I am hoping someone here can scrutinize my attempts.
All the commands come back with "OK", but no freq is detected on any of the pins.
If I use the pin as a normal output, (driving an opto) it works correctly.

The commands are as per the UBW site, but what I don't know is if you have to set the
pin as an output first, or just don't configure it at all prior to setting it for PWM.
I have tried both to no avail.

Commands in order:
PC,4,1 'set to single channel
PC,2,1,D,1 'use channel 1 as port D pin 1
PC,1,1000 'Divide 80Mhz to get a 80Khz clk
PC,0,2000 'Ticks of 80Khz between pulses, = Frequency
PC,5,1 'Enable the PWM
SP,1,2000 'roughly 50% duty cycle.

Have also tried various orders of these commands, but still no luck.

What am I missing ???

Regards
Regards
Hervey Bay Qld.
 
Dinosaur

Guru

Joined: 12/08/2011
Location: Australia
Posts: 333
Posted: 06:13pm 27 Oct 2014
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Hi All

It appears that a single channel won't work.
By setting it to 2 channels, it works.
Regards
Hervey Bay Qld.
 
TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6269
Posted: 06:17pm 27 Oct 2014
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Glad to see you were able to work it out.
I have UBW32's but with MM Basic on them.

Jim

VK7JH
MMedit
 
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