How to put the system in off mode nrf51822

[SumitS]

Hello,

I want to measure the current in system off mode. I am flashing the S110 softdevice and bootloader in the nrf51822 chip. Using BLE i am flashing an application code which does nothing but calls the function sd_power_system_off(). When we measure the current the it is about 1mA. We are using the Insight SIP evaluation kit. Also after flashing the code we restarted the system and removed the debugger.

Could you please guide us as to where we are wrong.

Thanks & Regards, Sumit Singhal

[Susheel Nuguru]

OK, then we can remove softdevice and bootloader from the picture And the code with pull settings changed looks good too. To make sure that your board is in system off, check if it gets reset when it you press the wakeup button. If there is reset, then the wake of from system off worked, else the chip might not have gone in system off mode at all. Otherwise it should be something with the board. My guess is that there is some leakage somewhere. Check with the board schematics to see if it is following our reference designs. I would recommend you to contact the company who made this custom boards.