Move passives around to try and put a bit of mask between them Without any mask, the components have a tendency to migrate around the board during reflow. Now they're all separated, although sometimes that separation is pretty small. Signed-off-by: Keith Packard <keithp@keithp.com>
Add serial tx/rx to debug connector Share tx with LED (will take some SW fun). The connector has GND at pin 3, which is marked with square copper. The TX/RX pins are on one side and the SWD pins are on the other. This was dramatically easier to route than the alternative. Signed-off-by: Keith Packard <keithp@keithp.com>