I.D. AL - VP100HDi - Interactive Full HD 1080p video player - User manual
® Waves System
V 1.03 - 2012
9 - RS232 serial link protocol
The VP100HDi can communicate with other devices. It receives commands on the Rx input and sends
data through the Tx output. The player complies with the RS232 norm (19200 bauds - 8 bits / 1 start bit
/ 1 stop bit / no parity).
9.1 - Reception Protocole
VP100HDi can receive commands to start reading a file or change volume. If the same link is used to
control several players, each player will only execute commands addressed to its own number.
The reception protocole is made of a 3 bytes frame.
Byte 1 (status) + Byte 2 (command) + Byte 3 (data)
Note :
- One byte is 8 bits : b7 b6 b5 b4 b3 b2 b1 b0
- A binary symbol for 8 bits is : xxxxxxxxb
- A Hexadecimal symbol is : xxh
Byte 1 : Status - 1xxxxxxxb
> b7 = 1: refer to a status byte
> b6 - b0: player identification to be addressed to from 001 to 127 (000001b - 1111111b)
- The default player address (ID) is 001. You can change it. (see next command)
- Several players may have the same identification number to create groups.
- Identification 000 is the "global" code, all players are concerned by the command
Byte 2 (Command) + Byte 3 (Data) - 0xxxxxxxb
- Byte 2: command (command byte is always followed by a byte of data).
> b7 = 0 : refer to a byte of command or data
> b6, b5, b4, b3, b2, b1, b0 : command code sent to the player
Byte 1 (status)
Byte 3 (data)
Byte 2 (command)
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