Primary mbed:
    main.cpp        - Primary program to control mbed
    main_time.[ch]  - Time synchronization functions
    main_comm.[ch]  - Serial communication functions
    main_emit.[ch]  - Periodic signal generation functions

Testing mbed:
    tester.cpp      - Mbed 3 testing program

Host control:
    control.c       - Linux program to control primary mbeds

Miscellaneous:
    examples.cpp    - Device testing routines (not used)

Common files:
    messages.[ch]   - Message definitions for mbed <--> {bbb,host}

KL46Z Libraries:
    serial_dma.[ch] - DMA based serial I/O (not used)
    serial_irq.[ch] - Interrupt driven serial I/O
    timer_dma.[ch]  - Time stamping using DMA and PIT