Realistic expectations of sleep currents on Xiao nrf52840 - HELP

[msfujino]

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XIAO_BLE wakes up from System_ON_Sleep and Writes weather data to on-board Flash

In post 6, I did not know how to release the internal Flash from DeepPowerDown mode (DPD), so I used it without DPD. As a result, the current during the sleep period only dropped to 26uA. Since post 7, we have discussed how to release from DPD, and I have confirmed that Flash will release from DPD using SPIClass. Also, the BME280 breakout board had a mounted LDO and level shifter, which consumed current, so I changed to a breakout board that did not have these mounted. With these measures, I…