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C. Instruction of RS232 commands
a.
Examples of command format:
1
@00:VOL+$ Represents: Volume up
2
@00:NEXT$ Represents: Next file
3
@01:PREV$ Represents: Previous file (this command can only be accepted
by media player that set the address as “01”, all other media players will not act
on this command).
4 @00:03$ Represents: Play the files that stored i n folder 03.
b.
The RS232 command consists of 5 parts, for example: “@00:VOL+$”
1 “@”: Beginning sign of the command.
2 “00”: Address code.
There are 2 kinds of address code: broadcast address “00” and user address “01-99”.
Broadcast address is the one that all the media players on the total data can act on the
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