J7 connector provides SPI port 0, I2C port 0, serial 0 (DBGU) and 1 (UART1) and GPIO
Image 1: Zoom in right side (top view) of pico-SAM9G45 development board showing J7 connector with PIN1 marked up.
NOTE: Connectors have a 2.0 mm pitch
For information on SPI see: Working with SPI interface
For information on I2C see: Working with I2C interface
For information on GPIOs see: Working with GPIOs