nRF58122 consuming 1.15mA in system sleep mode continuosly

RE: nRF58122 consuming 1.15mA in system sleep mode continuosly

Susheel Nuguru — Thu, 16 Jul 2015 11:49:03 GMT

Anand, Please update this thread.

RE: nRF58122 consuming 1.15mA in system sleep mode continuosly

Susheel Nuguru — Wed, 29 Apr 2015 07:12:03 GMT

if are looking for the nRF51 system to go to low power while in sleep you should look into low power modes while in System ON, especially 13.1.7 System ON mode and choose constant latency or low power with variable latency. you can disable the UART just before power_manage to turn its poweroff.

RE: nRF58122 consuming 1.15mA in system sleep mode continuosly

Anand Ramashetty — Wed, 29 Apr 2015 06:45:00 GMT

Hi Aryan,

I commented the function uART_init(definition posted below) in my application and I took the measurement , Now the average power consumption is about 60 MicroAmp. I think the UART was drawing the more current.

 static void uart_init(void)

{ /**@snippet [UART Initialization] */ simple_uart_config(RTS_PIN_NUMBER, TX_PIN_NUMBER, CTS_PIN_NUMBER, RX_PIN_NUMBER, HWFC);

 NRF_UART0->INTENSET = UART_INTENSET_RXDRDY_Enabled << UART_INTENSET_RXDRDY_Pos;

 NVIC_SetPriority(UART0_IRQn, APP_IRQ_PRIORITY_LOW);
 NVIC_EnableIRQ(UART0_IRQn);
 /**@snippet [UART Initialization] */

}

Regards, Anand

RE: nRF58122 consuming 1.15mA in system sleep mode continuosly

Susheel Nuguru — Tue, 28 Apr 2015 17:19:08 GMT

power_manage is only a function that will make CPU to go to sleep and wait for events. It will not power manage anything on the nRF51 chip automatically. Your device definitely seems to have few peripherals active even when the CPU is in sleep and hence the clocks they are using are running. Check the power settings of all peripherals that you are using in your application. By the way,