Read game controllers and joysticks connected to a PIC32MX550F256L. SPI3 clock at 1MHz, connects to an OLED display module, 128x32 pixel, based on the SSD1306 chip.

OLED display connections:

Digital pin connected to GameCube controller:

• GC RA4 pin 60 via diode, to pull signal line down
• GC RA5 pin 61, direct, to sense state of signal line

Debugging LEDs on dev board:

• LED1 RE6 pin 4
• LED2 RE7 pin 5
• LED3 RE1 pin 94
• LED4 RA7 pin 91
• LED5 RA6 pin 92

PIC32 pin numbers are for the 100-pin package.

LEDs light when the pin is pulled LOW.

MPLAB X V3.45 and 'xc32' V2.15. These are quite old versions now, so I really ought to upgrade!

Microchip ICD3. Other programmers should work, e.g. ICD4 or PICkit4.