Power Consumption issue

RE: Power Consumption issue

Simonr — Mon, 16 Dec 2019 10:59:12 GMT

Hi venu

Sorry, I have updated the code snippet in my last reply to one that should work for you.

Best regards,

Simon

RE: Power Consumption issue

venu gopal — Mon, 16 Dec 2019 07:59:36 GMT

Hi Simon,

We are getting error while building the code.

It shows missing structure of “mst_uartConfig” at the time of build.

please give us suggestion to resolve the error.

kindly refer the attached image file for the error message.

Thanks and Regards,

venu

RE: Power Consumption issue

Simonr — Thu, 12 Dec 2019 09:38:53 GMT

Please try uninitializing the UARTE by stopping RX/TX operations, calling the uninit function, and then power cycling the UART peripheral, please see the snippet below:

void disabled_uart(void) {
  uint32_t err_code = app_uart_close();
//  APP_ERROR_CHECK(err_code);

  NRF_UARTE0->TASKS_STOPTX = 1;
  NRF_UARTE0->TASKS_STOPRX = 1;
  NRF_UARTE0->ENABLE = 0;
  
  /* Workaround by disabling the UART peripherals due to Nordic SDK15.0 issue */
  *(volatile uint32_t *)0x40002FFC = 0; /* Power down UARTE0 */
  *(volatile uint32_t *)0x40002FFC;     
  *(volatile uint32_t *)0x40002FFC = 1; /* Power on UARTE0 so it is ready for next time */
}

What exactly is happening is explained in this post if you got any questions on this procedure.

Best regards,

Simon

RE: Power Consumption issue

Gaurav Kapoor — Wed, 11 Dec 2019 10:33:47 GMT

HI Dears , Pls help to verify these files and advise changes tks Gauravdevzone.nordicsemi.com/.../51238.main.c devzone.nordicsemi.com/.../nrfx_5F00_uarte.c

RE: Power Consumption issue

Simonr — Mon, 09 Dec 2019 14:14:16 GMT

Correct joakimsaaz, this current draw indicates that the UART isn't disabled properly. Please disable the UART peripheral before going to sleep in your application.

Best regards,

RE: Power Consumption issue

joakimsaaz — Mon, 09 Dec 2019 13:31:49 GMT

I don't know if this applies to the nrf5 SDK but try and disable UART. In the boards I have tried with the nRFConnect SDK (Using Zephyr), 600uA is generally an indicator of that.