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Communication flow charts – Grass Valley XSwitch Feb 08 2006 User Manual

Page 33

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XSWITCH Installation and Operation Manual

33

Communication Flow Charts

Example reply:
XSWITCH Ver. 1.0 Copyright 2003, Grass Valley

Communication Flow Charts

Figure 19. Send Command Packet

Send Command

Packet

CRC <- 0

Count <- Len + 3

Count = 0?

Send CRC

Done

NO

YES

Initialize UART

1 Start Bit

8 Data Bits

1 Stop Bit

Update CRC

Send Byte

Count <- Count - 1