Return: None

E.g. AA 07 02 00 08 BB will specify to play the eighth audio in the current drive, and the audio

number is from 1 to 65535.

Play the audio in specified drive of specified path.(08)

Command: AA 08 length drive path SM

Return: None

Explanation: length= drive length + path length=1+ path length

Check the current online drive.(09)

Command: AA 09 00 B3

Return: AA 09 01 Drive SM

Explanation: The online drive is differentiated by bitwise usb:bit (0) sd:bit (1) flash:bit (2)

It can check the current online drive. It is recommended that you check the current online drive

before switching the drive.

Check the current drive(0A) to play

Command: AA 0A 00 84

Return: AA 0A 01 Drive SM

Switch to the specified drive(0B)

Command: AA 0B 01 drive SM

Return: None

Explanation: It is drive switching command. If the current drive is online, you can switch it to the

corresponding drive and wait to play. After switching, the module plays the first audio of this drive. It

is recommended to check whether the drive is online before you switch.

Check the total audios(0C)

Command: AA 0C 00 B6

Return: AA 0C 02 Upper-byte Lower-byte SM

Check the current audio(0D)

Command: AA 0D 00 B7