2 protocol-decoder spi channel miso=0 channel cs=1 channel mosi=2 channel clk=3
3 protocol-decoder max7219
5 input spi/max7219/max7219.sr
6 output max7219 annotation class register match max7219_register.output
7 output max7219 annotation class digit match max7219_digit.output
8 output max7219 annotation class warning match max7219_warnings.output