SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH

Command Set

2.7.7 Get Playing State – 47hex - G ascii

Commands (host)

2 bytes

1.- 0x41 (hex), A (ascii). *Audio Command.

2.- 0x47 (hex), G (ascii).

Responses (device)

1 byte + 1 byte ACK/NAK

1.- Playing State: 0x00(hex) Active or

0x01(hex) Not Active.

2.- 0x4F (hex), O (ascii) – success ACK or

0x46 (hex), F (ascii) – fail NAK.

Description

This is one of the most simple yet effective

commands on SmartGPU 2, this command replies

the currently playing audio state, 0x00(hex) for not

playing, and 0x01(hex) for active playing.

With this command user can know if a previously

called audio file with “Play WAV File” command, is

still being playing or already ended.

Note that the “Pause WAV File” is the unique

command that can stop audio sound and this "Get

Playing State" command will still return an Active

Playing State.

Example (sent and received

commands)

Example 1:

<41,47> 00,4F. No audio file is playing.

Example 2:

<41,47> 01,4F. An audio file is being played.

All data is in hex.