power save problem

[air]

Hello,

I'm using nrf51822/sd130/sdk12.1.0 and SOFTDEVICE_PRESENT defined. But, I didn't enable softdevice.

I want to realize power save mode.

1. when I use __WFE()

• no reset and right wakeup

2. when I use sd_app_evt_wait()

• __disable_irq(); while (loop); --> stop here __enable_irq(); in app_error_save_and_stop() function.

What should I do additionally?

thanks.

[Sigurd]

Hi,

You will get the error code NRF_ERROR_SOFTDEVICE_NOT_ENABLED if you try to use the sd_app_evt_wait() function when the SoftDevice is not enabled. You can enter System ON sleep mode when the SoftDevice is not enabled like this:

     // Wait for an event.
    __WFE();

    // Clear the event register.
    __SEV();
    __WFE();

[air]

thanks for your answer.