Buttons

Additional to the UDP messages, and OSC messages, the Start, Stop and Resume action can also be given with buttons.

1. GPIO

The mapping is as following:

• • GPIO2 -> Start action [Button <START>]

  • GPIO3 -> Stop action [Button <STOP>]

  • GPIO6 -> Resume action [Button <RESUME>]

The GPIO pins are active low (connecting the other side of the button to ground). See also here.

2. MCP23017

The mapping for the buttons is as following:

• • GPA2 -> Button <SELECT>

  • GPA3 -> Button <BACKWARD>

  • GPA4 -> Button <FORWARD>

  • GPA5 -> Button alt_function=0 <START/RESET>, alt_function=1 <START/RESUME>

  • GPA6 -> Button <STOP>

  • GPA7 -> Button alt_function=0 <RESUME>, alt_function=1 <RESET> --> confirmation with <SELECT>

The GPA pins are active low (connecting the other side of the button to ground).