RE: RAM retention with sd_app_evt_wait(void) operation

Stefan Birnir Sverrisson — Wed, 29 Jun 2016 12:14:25 GMT

Hi Ankush

I do not see the softdevice initialized and enabled in your code. I would advise you to start off with any of the BLE examples in the SDK, starting off with the ble_app_* name. They are template examples for BLE operation, which you can expand to any custom implementation. For the most basic BLE template, start off with the ble_app_template example in the SDK.

When going to System On low power mode, which you enable with calling power_manage() function, I think the default config is full RAM retention. Further code reference how to modify the RAM retention configuration is shown in the basic power-down examples available on the Nordic Github.

RE: RAM retention with sd_app_evt_wait(void) operation

RK — Wed, 29 Jun 2016 00:42:25 GMT

This is a normal compilation error which tells you you haven't included the header files declaring the functions you're using, in this case sd_app_evt_wait() and APP_ERROR_CHECK.