nRF52840 SDK16 - Cannot enter System OFF

RE: nRF52840 SDK16 - Cannot enter System OFF

Jared — Tue, 21 Jul 2020 10:49:39 GMT

You can try calling idle_state_handle(void) at the top in the for loop in main(), that way the log will be processed before you go to system off.

RE: nRF52840 SDK16 - Cannot enter System OFF

Nikosant03 — Fri, 17 Jul 2020 13:45:28 GMT

Hi Jared and thank you for your responce.

Well, I was using deferred processing and it seems that this is the source for all the problems. I don't know why and how but as soon as I used in place processing everthing seems to work fine..

I was using the NRF_LOG_PROCESS to process the NRF_LOGS

static void idle_state_handle(void) {
  if (!NRF_LOG_PROCESS()) { 
    nrf_pwr_mgmt_run(); 
  }
}

Sould I also use the NRF_LOG_PROCESS somewhere else inside my code? Can you think any reason that could be responsible for these problems in order to avoid it in the future?

I prefere to use the deferred processing as I've read that is safer.

Thanks in advance

Nick

RE: nRF52840 SDK16 - Cannot enter System OFF

Jared — Thu, 16 Jul 2020 09:38:06 GMT

Hi,

[quote user=""]The strange thing is that while advertising and the WC_CHG pin goes to LOW the system normaly enters system OFF mode but when the peripheral is get connected with the central the system won't enter system OFF mode anymore. I noticed that when I add the NRF_LOG_INFO("Print here"); line the code works fine and I cannot understand how does it related with my problem.[/quote]

Set a breakpoint at line 10 and see if the program enters the if statement, if it doesn't then it's because the conditional statement isn't true.
Are you using deferred processing or in-place processing?

regards

Jared