User Manual

You need to double the calculated voltage to compensate for the 10K+10K voltage divider, so in reality every value

from the ADC is equal to 1.61133mV on the LIPO cell, although it appears on the ADC at half that level.

16 Mbit (2MByte) SPI Flash

The WICED Feather contains an optional (default = off) 16MBit SPI flash chip that is controlled by FeatherLib.

In order to keep the maximum number of pins available to customers, the SPI flash is disabled by default, but can be

enabled with USB Mass Storage support so that you can access the contents on the flash memory from your PC to

easily exchange data and files. Simply solder the SPIFCS solder jumper on the bottom of the device closed, and make

sure you are running FeatherLib version 0.6.0 or higher to enabled flash and USB mass storage support.

SPI flash is disabled by default. It can be enabled by soldering the SPIFCS (A4) solder jumper on the back of the PCB

closed before powering the board up, which will connect the CS/SSEL of the SPI flash to pin A4:

The 16MBit SPI Flash is enabled starting with FeatherLib 0.6.0. Please make sure you are running a recent

version of FeatherLib when working with the external flash memory.

The SPI3 bus used for SPI flash is controlled by FeatherLib, and the four pins shown below should be avoided

in your own sketches when SPI Flash is enabled in a future FeatherLib release.