I2S - sound problem

RE: I2S - sound problem

KaEd1705 — Mon, 29 Mar 2021 13:56:08 GMT

Thank you, I think it helped, I will continue to test.

I have a similar problem when active bluetooth advertising (it is less audible). Could it be a hardware or firmware problem?

RE: I2S - sound problem

Kenneth — Mon, 08 Mar 2021 10:03:09 GMT

It may sound like an interrupt priority/blocking problem, how about using pin change interrupt example instead as basis for your application?

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/pin_change_int_example.html

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/hardware_driver_gpiote.html

RE: I2S - sound problem

KaEd1705 — Fri, 05 Mar 2021 09:04:21 GMT

I checked on the oscilloscope and there is a temporary interruption in i2s communication

RE: I2S - sound problem

KaEd1705 — Fri, 05 Mar 2021 09:02:10 GMT

No, the click doesn't occur if I use app_sched_event_put(NULL, 0, Sound_Play); from an app_timer.

I used 4k7 resistor as pull up.

Regards,

KaEd1705

RE: I2S - sound problem

Kenneth — Tue, 19 Jan 2021 12:24:00 GMT

Hi,

Does the click also occur if you use app_sched_event_put(NULL, 0, Sound_Play); from an app_timer instead of an app_button callback?

Just trying to figure out of the noise is due to buffering issue the application, or analog noise from the button, what pull up resistor is used on the button?

Best regards,
Kenneth