Drives this useful I/O port expander. Example is provided for the PiFace, which is how I tested this library. Wire the Arduino up to the PiFace as follows (other boards you're on your own): Note that ...

chip will report it as a logic high. In the example, we'll set up one chip. We will set "port A" to be all outputs and send to it in "byte mode". "port b" will be split into four inputs and four ...

色々ありましたが、ArduinoでフジソクSRAMカード吸い出しできました。 無論書き込みもです。 MCP23S17のA2ビットを立てるとIOCONレジスタアクセス初期書き込みDevice Opcodeが0x40から0x48に変わります。それも、IOCONレジスタアクセスのみ。他のレジスタアクセスはA2 ...