If other people would like to test the serial link, I've uploaded the changes in the r16 on svn. Here are the modifications:
Changeset 16 for trunk/HighVoltageController.c - Open ReVolt - Trac
For testing conect a null modem cable to your pc and receive at 19200baud with 8n1. Any java programmer outthere wants to make the client for this?
Ups! I had commented out the HighPedalLockout ... Restored it in r17.