4 PWM channels with micro ESB?

[matterama]

Hi everyone, I'd like to use the micro-esb radio interface to let to nRF's talk to each other. One of them will be generating 4 PWM outputs based on data received.

I have PWM working. I have uESB working. However....they aren't working together because PWM uses Timer 1 and 2. uESB uses Timer 0 and 2.

I'll tear into it and see if I can combine timers, etc, but at first glance it looks difficult to have 4 PWM and the uESB running.

Any suggestions (besides moving to BLE and softdevice)...?

Thanks!

[Stefan Birnir Sverrisson]

Hi matterama

Best effort is to create 3xPWMs with a single timer peripheral, as done in the PWM library on Nordic's Github. What is your required frequency for the PWM? Could you use the 32kHz RTC timer instead?

[matterama]

Hello Stefan, thanks for the reply. I am using the PWM libary currently, just defaulted to 4. Unfortunately, I'll need 4. We use the RTC for a low frequency (1 msec) counter currently, but might be able to change that. I'll look a little harder at the PWM libary and this option and get back to you...

[Stefan Birnir Sverrisson]

Great. Let me know what you find out.

[matterama]

I had a conflict in some other code with the timers, so did a cleanup. Now, the core of the PWM library uses Timers 0 and 1. Timer 2 is for micro ESB. I get radio problems, but I do not believe they are timer related at this point.