System OFF mode(0.3uA) in nrf52832

[Autobot]

Hello everyone,

I trying my nrf52832 getting ultra low power current conception mode using System OFF mode(0.3uA). I using SDK 15.2 ble_app_beacon example I change 32KHZ internal RC configuration this link and sd_power_system_off();  this command for low power conception but my module(PCA10040) take 5mA current for advertising. I need get ultra low power conception for sleep and advertising both side please share any example code or refer link to achieve this concept.

DK:PCA10040

SDK:15.2

[Simonr]

Hi, you don't need to use the BSP_EVENT_WAKEUP command. The ble_app_hrs example should do what you're describing without needing any modifications.

Best regards,

Simon

[Autobot]

sorry for the late replay Simonr,

I using fresh example code of ble_app_hrs without any modification just compile on my pca10040 module when i press the button 1 device return fatal error from sleep_mode_enter() as below

static void sleep_mode_enter(void)
{
    ret_code_t err_code;
 NRF_LOG_INFO("Sleep Mode Fun");
    err_code = bsp_indication_set(BSP_INDICATE_IDLE);
	NRF_LOG_INFO("BSP error: %d",err_code);
    APP_ERROR_CHECK(err_code);

    // Prepare wakeup buttons.
    err_code = bsp_btn_ble_sleep_mode_prepare();
		NRF_LOG_INFO("sleep mode pre: %d",err_code);
    APP_ERROR_CHECK(err_code);

    // Go to system-off mode (this function will not return; wakeup will cause a reset).
    err_code = sd_power_system_off();
	NRF_LOG_INFO("sys off error: %d",err_code);   
	APP_ERROR_CHECK(err_code);
}

<00> info> app: Heart Rate Sensor example started.


<00> info> app: Fast advertising.

<00> info> app: Sleep Mode Fun


<00> info> app: BSP error: 0


<00> info> app: sleep mode pre: 0


<00> info> app: sys off error: 8198


<00> error> app: Fatal error