mp3 shield from elechouse - reading command

Hallo!

I bought a mp3 shield from elechouse. It works fine but i have trouble with the reading command. I would like to read the total numbers of sd card files, read volume and the current playing file. I have already read the manual many times but i do not understand how to to that. Is there anybody who can help me?

Greeting

Based on their example code, you send 4 hex characters over te serial port to the shield and it returns two bytes giving the number of files.

So, something like:

Serial.write(0x7E);
Serial.write(0x02);
Serial.write(0xC4);
Serial.write(0x7E);

and two bytes will be available in the serial buffer