This library is not tested with hardware yet. (it is based upon datasheet + app note). If you have hardware and can test with SPI, please let me know (open an issue). The BL0940 is a configurable ...
4. Within the Arduino IDE, select "Sketch" -> "Include Library" -> "Add .ZIP library", then select the downloaded zip file. This should add the library. To use the library, you'll have to include the ...