power management

[harrys]

hi,

i am working with nrf52832. system on sleep mode is working ok in ble_app_uart example  by commenting " //err_code = sd_power_system_off();
//APP_ERROR_CHECK(err_code);" in sleep_mode_enter(). when i am working with beacon  example  system on sleep mode is  not working. it takes 1 ma current

[Susheel Nuguru]

sd_power_system_off(Deep sleep) is not the same as __WFE (Idle sleep).

Please use the same kind of sleeps to compare the results on both sides.

[harrys]

i don't want system in deep sleep mode. i want to run it in SYSTEM ON SLEEP mode. i want to know when i call _WFE system goes in "system on sleep" or not. if not can you tell me how i can do it.

[harrys]

yes i have tested ble_uart_example in "system on sleep" mode on my hardware  it takes around 15uA.

can you tell me steps to do the "system on sleep" mode in beacon example

[Susheel Nuguru]

beacon is using nrf_pwr_mgmt. n the idle_State_handle, it calls nrf_pwr_mgmt_run() which in calls the system idle sleep functions. So you do not have to do anything as the beacon example is already doing the system of idle calls in idle mode in the for(;;) loop in the main function.

[harrys]

you mean to say that beacon example is already working in system on sleep mode .

[harrys]

yes it takes around 200uA in sleep mode. is this can be issue of hf clk. if yes how i can disable it

[Susheel Nuguru]

200uA sounds reasonable when advertising. If you are measuring this after advertising stopped then it is a bit high.

Check if you have enabled some logging that keeps the serial device on which inturn keeps HFCLK high.

[harrys]

log is off . i want to know . commenting "log_init()" function is right way of doing nrf log off.

i have initialized adc. and then de_init adc.

with adc current = 5mA

with deinit adc = 200uA

is there any thing i did wrong.