nrf52832 ble_app_uart current consumption

[ytpark]

I am using nRF5_SDK_12.2.0, S132-SD-v3, nrf52832 pca10040 board, ble_app_uart When measuring current consumption using ble_app_uart -> 0.6~0.8mA(advertising) I want to reduce current consumption more than now. Please show me how.

ps : source -> uart_init(), printf(), buttons_leds_init() delete

[Nguyen Hoan Hoang]

It is the uart that consume that much current. Disable it while it is not connected will drop the current down to around 20 uA depending on the ADV_INTERVAL. Enable the UART will bring it up to around 0.6-0.8 mA.

[ytpark]

I removed the uart part from the ble_app_uart example below and did a test. If I misunderstood the uart enable part, Instruct the example source or the wrong part

---

int main(void) { uint32_t err_code; bool erase_bonds;

// Initialize.
APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);

// uart_init();

// buttons_leds_init(&erase_bonds);

ble_stack_init();
gap_params_init();
services_init();
advertising_init();
conn_params_init();

// printf("\r\nUART Start!\r\n");

err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);

// Enter main loop.
for (;;)
{
    power_manage();
}

}