i can successfully shutdown and restart the Seeed XIAO nRF52840 via GPIO (Pulldown) switch pushes.
nrf_gpio_cfg_sense_input(digitalPinToInterrupt(2), NRF_GPIO_PIN_PULLDOWN, NRF_GPIO_PIN_SENSE_HIGH); delay(2000); NRF_POWER->SYSTEMOFF = 1;
Being connected to a 280mAh LiPo battery, i measure a current of about 3mA when the device is in sleep.
In multiple threads, the SPI Flash has been turned off via:
#include <Adafruit_FlashTransport.h> ... Adafruit_FlashTransport_QSPI flashTransport; ... flashTransport.begin(); flashTransport.runCommand(0xB9); flashTransport.end();
Unfortunately, i run into the following error:
c:\Users\x\Documents\Arduino\libraries\Adafruit_SPIFlash\src\qspi\Adafruit_FlashTransport_QSPI_NRF.cpp: In member function 'virtual void Adafruit_FlashTransport_QSPI::begin()': c:\Users\x\Documents\Arduino\libraries\Adafruit_SPIFlash\src\qspi\Adafruit_FlashTransport_QSPI_NRF.cpp:55:35: error: 'g_ADigitalPinMap' was not declared in this scope .sck_pin = (uint8_t)g_ADigitalPinMap[_sck],
After multiple hours of research in several forums and testing, i still could’nt not find a solution.
Is disabling the SPI Flash a solution to decrease the power consumption on this device?
I’m not using Bluefruit - thus i cannot use the sd_* functions.
The Board selected is Seeed nRF52 mbed-enabled Boards → Seeed XIAO BLE - nRF52840.