Buttons and led's

4 Buttons / 4 Led's

The 4 buttons / 4 led's are supported on the GPIO pins. The mapping is as following:

    • GPIO0 -> cmd0

    • GPIO1 -> cmd1

    • GPIO2 -> cmd2

    • GPIO3 -> cmd3

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

The status led's are mapped as following:

    • GPIO 6 -> led0

    • GPIO 7 -> led1

    • GPIO10 -> led2

    • GPIO18 -> led3

For the function of the other pins, see here.

8 Buttons / 8 Led's

This is implemented using a MCP23017. INTA must be connected to GPIO7, pin 12. See also here.

The mapping is as following:

    • GPA0 -> cmd0

    • GPA1 -> cmd1

    • GPA2 -> cmd2

    • GPA3 -> cmd3

    • GPA4 -> cmd4

    • GPA5 -> cmd5

    • GPA6 -> cmd6

    • GPA7 -> cmd7

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

The status led's are mapped as following:

    • GPB0 -> led0

    • GPB1 -> led1

    • GPB2 -> led2

    • GPB3 -> led3

    • GPB4 -> led4

    • GPB5 -> led5

    • GPB6 -> led6

    • GPB7 -> led7