Forums - RB5 PWM output problem

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RB5 PWM output problem
JIE
Join Date: 22 Jul 21
Posts: 2
Posted: Thu, 2021-07-22 02:41
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To whom it may concern:

I have downloaded sample projects code from the website https://github.com/quic/sample-apps-for-Qualcomm-Robotics-RB5-platform. In GPIO-samples, when I run 5. Simple PWM output code, I don't know in which GPIO port can I get the PWM signal, so that no PWM signal can be detected when the PWM parameter is changed. Can anyone tell me which is the default output GPIO port of PWM?

In addition, when I set the second parameter of PWM to 1 (namely,/qrb5165_platform -pwm 1 1000 500), there will be a parameter error. When the second parameter of PWM is set to 0 (namely, /qrb5165_platform -pwm 0 1000 500), the code can be run.

Why would this be?

Any advice would be really appreciated. Thanks.

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Re: RB5 PWM output problem — Best Answer
mitarath
Join Date: 21 Jun 21
Posts: 12
Posted: Fri, 2021-07-23 10:32
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Hello customer

Regarding GPIO port for PWM is Pin 12 and Pin 14 on LS2.
regarding setting PWM parameter , we are checking and will update soon

Thanks,
Mita

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Re: RB5 PWM output problem
sarthak
Join Date: 5 Sep 22
Posts: 2
Posted: Tue, 2022-09-06 00:48
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Hello,

I tried the PWM sample code AS IT IS  https://github.com/quic/sample-apps-for-Qualcomm-Robotics-RB5-platform/tree/master/GPIO-samples on the RB5 development board, but the output is not coming from pins 12 and 14 on the LS2 connector. So can you please suggest to me, how can I enable the PWM in the RB5 board and check the PWM output? Is there something else i should do on the rb5 to enable the PWM.

Any help would be appreciable.

Thanks

Sarthak

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Re: RB5 PWM output problem
deepak.joshi
Join Date: 9 Aug 23
Posts: 2
Posted: Wed, 2023-08-23 04:26
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Hi, I'm facing similar issues. I'm not able to enable PWM1, and when i enable PWM0, The output voltage remains 0V throughout. I'm using Thundercom latest debug image.

How do i fix this?

Thanks

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