Interrupt handler - example from eLua doc.
Int - define uartid (variable was not set)
CAN - More error checking
Life - use bitarray instead of table (save memory)
Int - need to set pin as input before can get interrupts on it
CAN - wait for message, pre-read registers (CAN registers need time to read/write)
ADC - add LM4F120
CAN - fix missing pre-read