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FAA20 Embedded NEXCOM Vocoder
Board Manual
This manual has been prepared for the Federal Aviation Administration.
FA100-00107 (March 2004) Rev 1.0.0 Page 52
If any errors are detected during programming (or if an acknowledgement is
not received within 100 ms), send the ESC character (0x1B) followed by a
carriage return (0x0D) to terminate the programming process. The FAA20
does not support S-record retransmission. After insuring the FAA20 has
successfully terminated the process, the programming process can be
reinitiated. To insure the FAA20 has stopped programming, send any other
status command and insure the expected response is provided.
The acknowledgement mode can also be used with COM1 or COM2. The
impact to configuration parameters is the same as described in the
standard mode upgrade (above). In addition, the FAA20 also temporarily
disables COMECHO and COMPROMPT (as above). Also note that the
data transfer rate for COM
Figure 23 provides a sample terminal programming session using COM3.
Note: This sample assumes that COMECHO and COMPROMPT are
enabled on COM3 before beginning the programming sequence. Note: A
banner message is never printed to COM3.
Figure 23: Software Upgrade (Acknowledgement Mode)
COM3: prog ack
> ERASING FLASH (wait for READY)
> READY
> ACK 0000
> ACK 0001
> ACK 0002
> ACK 1470
> ACK 1471
> ACK 1472
> ACK 1472
> DONE
COM3: reset
> RESET OK
COM3:
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