casper-astro/mlib_devel — Issue #1: ROACH2 revision 1 gpio mismatch in toolflow
Author: amartens
Created: 2011-11-11 13:27:45+00:00
State: open

Revision 1 of the ROACH2 has 16 GPIO pins (from 12 on revision 0). It does not have two GPIO banks like ROACH. It has no oe (output enable) pins for the GPIO. The first 8 GPIO pins are connected to the 8 LEDs on the board as well as to a header.

The toolflow at the moment gives the option of ROACH2 having 2 GPIO ports of 12 pins with an oe pin for each. It also provides for 8 LEDs which maps to the same pins as the first 8 gpio pins. This causes various compile problems.