15.2 proximity example, NRFX SAADC driver not updating battery service value

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Simon — Sun, 07 Oct 2018 20:01:46 GMT

good to know that nrfx is confirmed with the coin (was not sure from an earlier post if a coin was tested).
Started from scratch again, repeated conversion steps, and maybe cache was cleared or something,
but now good and BAS data is changing on 832 DK.

thank-you,

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Susheel Nuguru — Fri, 05 Oct 2018 07:26:05 GMT

Which DK are you testing this on, why are we seeing different results with the same configuration? I am not looking into RTT but I connected it to my phone nRF Connect app and it seems to be working OK. After 5 minutes the battery shows 28% and it keeps on reducing every 15-20 seconds

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Simon — Wed, 03 Oct 2018 14:21:28 GMT

made the change, but it seems to be back to where it was before this last change.
for instance, insert cr2032 into DK, power on, connect to proximity, battery service, cccd,
after a few seconds from 0x64 the value should change, but value the same at 0x64.
anywhere else?

thank-you,

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Susheel Nuguru — Wed, 03 Oct 2018 12:34:27 GMT

my bad sorry.

I changed the init function to this and checked on my phone to see if I am getting proper battery notifications and it seems to be correct.

My change was in ad_configure()

static const nrfx_saadc_config_t default_config = NRFX_SAADC_DEFAULT_CONFIG;
ret_code_t err_code = nrfx_saadc_init(&default_config, saadc_event_handler);

// ret_code_t err_code = nrfx_saadc_init(NULL, saadc_event_handler);
// APP_ERROR_CHECK(err_code);

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Simon — Fri, 28 Sep 2018 21:12:19 GMT

Probably best to give a quick test and see if it even compiles (code in zip had been provided).

too few arguments to function 'nrfx_saadc_init'

thank-you,

RE: 15.2 proximity example, NRFX SAADC driver not updating battery service value

Susheel Nuguru — Fri, 28 Sep 2018 11:40:07 GMT

Hi Simon,

I think the main reason is that you cannot send NULL for nrfx_saadc_init and i think we will need to fix it in our documentation.

for now change your code from

nrfx_saadc_init(NULL, saadc_event_handler);

nrfx_saadc_init(NRFX_SAADC_DEFAULT_CONFIG, saadc_event_handler);

And I think this should work.