The software uart now works.
UARTBridge had to work in higher clock rate, or the RX interrupts gets fucked up.
The current pinout is P2.2 is TX, P2.0 is RX.
We still have something wierd in the RX when the GSM module sends 0xFF before every char.
Its probably a glitch when the RX line drops below VH, and we think we start to get a byte, but it actually goes immedily back to VH.