Data Sheet

Shenzhen Waytronic Electronics Co., Ltd. WT2003S-16S Chip
- 20 -
Communication query command
CMD
Corresponding function
Parameters
C1
Query the current volume setting
C1 XX
C2
Query the current operation state
C2 XX
C5
Query the total number of music files in SD card
C5 XXXXX
C6
Query the total number of music files in specified
SD card folder
C6 XXXX
C7
Query the total number of music files in U disk
C7 XXXX
C8
Query the total number of music files in specified U
disk folder
C8 XXXX
C9
Query the file track currently playing
C9 XXXX
CA
Query current external connection status
CA XX
CB
Query the song name currently playing
CB XX XX(only support SD
card and U disk)
3.4.3.Write operation command
3.4.3.1. Return code format of write operation command
Note: After executing each write command, return the corresponding one-byte operation code.
Return code:
00 means OK, command execution;
01 means FAIL, command error, no execution;
02 mean EMP, no such file;
Remark: If no micro SD card data or micro SD card circuit abnormal or SD card data abnormal, it will
return one ‘05’ to send command.
Operation code
XX