n
Example :
Read the sync status of a projector with address \x01.
Suppose the sync status equals fast.
Transmit
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
Receive (acknowledge)
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
Receive (answer)
Start
Projector address
Command[0]
Command[1]
Data[0]
Checksum
Stop
\xfe
\x01
\x21
\x27
\x49
\xff
\xfe
\x01
\x00
\x06
\x07
\xff
\xfe
\x01
\x21
\x27
\x04
\x4d
\xff
475