nrf52832 P0.00 was changed unexpected

RE: nrf52832 P0.00 was changed unexpected

zhangqg123 — Wed, 23 Oct 2019 03:05:44 GMT

I find the reason: the PWM init .output_pins if not used must set NRF_DRV_PWM_PIN_NOT_USED

RE: nrf52832 P0.00 was changed unexpected

Håkon Alseth — Tue, 22 Oct 2019 11:57:40 GMT

Enter debug mode and see what the peripheral registers are set to. If you are toggling GPIOs near the P0.00, there could be cross-talk that drives that input, especially if there is no pull-resistor on P0.00. Try enabling a pull-down or pull-up resistor on P0.00 and see if that works better.

Kind regards,

Håkon

RE: nrf52832 P0.00 was changed unexpected

zhangqg123 — Tue, 22 Oct 2019 11:45:23 GMT

how can I check this config : P0.00 controlled by the PWM peripheral?

no matter how I use PWM0 or PWM1, or the PWM's ouput pin was others, P0.00 input value changed with the PWM output

RE: nrf52832 P0.00 was changed unexpected

Håkon Alseth — Tue, 22 Oct 2019 11:31:03 GMT

Hi,

Is P0.00 controlled by the PWM peripheral? If yes, then this will override any local GPIO settings when active.

Kind regards,

Håkon