Baracoda ToughRunners Manual de usuario descargar pdf (Pagina 15)

Communication Protocol for Baracoda ScanWear/ToughRunners Scanners

Sept. 07 15/26

4/ Special packets

These packets do not follow the above frame format.

4.1/ Deprecated packets

Code ID Description

frame

0x01 Legacy 1 1 1 or 1 2 1

These 2 sequences will be recognized and purged for backward compatibility with older

Baracoda products.

4.2/ Acknowledgment packets

Code ID Description

frame

0x06 ACK 0x06 1 X

0x15 NAK 0x15 1 X

These messages acknowledge the reception of a valid message with the expected

sequence number X, before processing it.

For captured data from the scanner, ACK and NAK have the same meaning but will

trigger a different event on the scanner.

Code ID Description

Frame

0x16 SYN 0x16 1 X

This message acknowledges the reception of a message to acknowledge with an

unexpected sequence number. X is the expected sequence number.

The device will resynchronize its remote sequence number when receiving this message.

From this point, all the frames described in this section 2/ are formatted as shown:

Code ID length Payload

1 byte 2 bytes -

 1 byte for code ID

o Bits 7:5 is the logical device

o Bits 4:1 is the command

o Bit 0: when set, the message must be acknowledged

 2 bytes for the size of the payload (big-endian), including the sequence number

byte which is considered as part of the payload

 Payload (including 1 byte for sequence number when applicable).

The response will have the same code ID as the command.

4.3/ Special scanner to host messages

Code ID Description Payload

0x32–0x33 Barcode data Barcode string

4.4/ Special host to scanner messages

Code ID 0x46-0x47

Description Get Capture Frame Format

Payload None

Response 1 byte

{0 = Baracoda, 1 = Baracoda + ACK, 2 = Raw}

Default settings

= 0

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 25 26

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