https://devzone.nordicsemi.com/f/nordic-q-a/55288/sending-data-while-using-psm-modeHi Everyone, I am using PSM mode in my program and want to send data everytime when modem wakes up from sleep(PSM mode). I also want to turn off/on UART only when required as use is not frequent. I am also monitoring current consumption on oscilloscopeen-USTelligent Community 13Mon, 09 Dec 2019 16:38:45 GMThttps://devzone.nordicsemi.com/thread/224534?ContentTypeID=1Mon, 09 Dec 2019 16:38:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fb1d3115-de80-4f10-a449-0a1893c09476Simon<p>Here is a sample that sends data over UDP every time the device wakes up from PSM mode (TX window):&nbsp;<a href="https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/udp_with_psm">https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/udp_with_psm</a></p> <p>One way you can get notified when modem wakes up from PSM (goes active) is to use the COEX2 pin. If you physically connect it to a GPIO, you can get notified through a GPIOTE interrupt. Check this ticket for more information:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/53292/nrf9160-toggle-gpio-with-modem-active-inactive-state">https://devzone.nordicsemi.com/f/nordic-q-a/53292/nrf9160-toggle-gpio-with-modem-active-inactive-state</a></p> <p>There may be other ways to do this. If this solution isn&#39;t sufficient please tell me and I will&nbsp;take a deeper look into it.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>