how to wake up from sleep mode

[ps_anu]

hi.....

i am using nrf52832 ........

i want to wake up my device from sleep mode ... i have used the command for sleep mode sd_app_evt_wait() ...... i dono  what command to give for waking up device from sleep mode 

thanks in advance

suggest me an answer

[Einar Thorsrud]

Hi,

The sd_app_evt_wait() calls __WFE() internally (among other things), so the nRF will wake up on any event/interrupt. A typical wake up source is a RTC compare event or GPIO input interrupt, but it could be anything.

[ps_anu]

hi... Einar

Once I put in sleep mode it will wake up by interrupt and send the data and again I want to put in sleep mode after sending data how ?? Can I put the sleep mode again 

[Einar Thorsrud]

Please be a bit more verbose in your questions, that way we will be able to help you much better. I still have no idea about how your system is intended to work and how you interact with the sensor and how you intend to trigger wakeup of the nRF.

[ps_anu]

HI....Einar ...

 Here , i have the attached the step by step process.. what actually i want to do ...

tell me is it possible or not 

pls see the pic

[ps_anu]

sorry for worse ....  i will explain the process what i want to do ?

step  by step 

 start ------> put the device in sleep mode ---------->> wake up by interrupting the sensor(using threshold)---------> send the data over ble_nus to ble_uart app -------------->> again it should go to sleep mode 

is it possibleto to do above process ?

[ps_anu]

did you get my question .........

[Einar Thorsrud]

Yes, but I am still not sure what type of interrupt you want. Does the sensor that generate a interrupt signal, so that you just want to wake the nRF up on a pin interrupt? If so you can refer to the Pin Change Interrupt Example.

[ps_anu]

 not using pin interrupt ... when my temperature goes beyond threshold it should wake up automatically 

see the code here i didn't use sleep mode

static void threshold_value()

{
   
      m_xfer_done = false;
    uint16_t length1;
    uint16_t threshold;
 
    char str[80];
     threshold= 30;
 if (m_sample < threshold )

    {      
 
    length1 = sprintf(str,"%d", m_sample);
  nrf_drv_twi_rx(&m_twi, LM75B_ADDR, &m_sample, sizeof(m_sample));
     ble_nus_data_send(&m_nus,str,sizeof(m_sample), m_conn_handle);
      
  
}
}