User-Manual for Buttons

Version 0.2 (30-Jan-13)

This program will read the status of the three onboard buttons on the Gertboard and optionally light the LEDs to reflect the button state. To use this program, connect jumpers from B1, B2 and B3 in header J3 to pins GP25, GP24 and GP23 in header J2 respectively. The jumpers on the 'out' area of U3 (U3-out-B1, U3-out-B2, U3-out-B3) are optional: if they are installed, the leftmost three LEDS will show the state of the switches.