RE: PWM driver with lower current consumption

Edvin — Tue, 26 May 2020 12:23:28 GMT

Hello,

If you want a simple PWM, I suggest that you stick to the pwm_library example implementation.

The reason this is not very power efficient is that the main() loop doesn't have a proper sleep cycle, like most of the BLE examples have. Look at the BLE examples, and see if you can implement this. You need to change the nrf_delay_ms() function with a proper delay function. nrf_delay_ms() will keep the CPU awake, which you don't want to do. Look at e.g. the ble_app_uart example how to implement a proper sleep routine in your main loop.

If you still think the current consumption is too high after implementing a sleep routine, it is probably because you need to have a timer running in order to use the pwm. I don't know what accuracy you need for your pwm signal, but you may look into changing out the timer peripheral with the RTC if you want to lower it further.

BR,

Edvin

RE: PWM driver with lower current consumption

Rafael Barrero — Mon, 25 May 2020 15:44:19 GMT

I just found and tried low_power_pwm and not works at current I want.