GPIO near Radio Usage

RE: GPIO near Radio Usage

Jørgen Holmefjord — Fri, 07 Sep 2018 13:22:50 GMT

If using BLE, the radio is only used at specified intervals. You can use timeslots, or radio notifications to know when the radio is used. If you are using some other protocol, you might have more controll over when the radio is active.

If your sampling requirements force you to sample during radio operations, this will most likely be fine, but you should consider enabling oversampling to reduce the affect of noise on the sampled signal.

RE: GPIO near Radio Usage

Luis — Fri, 07 Sep 2018 12:50:04 GMT

But how do you suggest that? I cannot guarantee that I wont receive a radio request from outside during an ADC sample?

RE: GPIO near Radio Usage

Jørgen Holmefjord — Fri, 07 Sep 2018 11:19:49 GMT

Hi,

I would recommend avoiding using analog inputs close to the radio. In fact I would not recommend sampling the analog inputs during radio operations to limit noise on samples.

Both of the other alternatives should be equally fine. See this page for details on what is defined as low frequency.

Best regards,
Jørgen