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Flyron Technology Co., Ltd.
FN-BC04 MP3 Sound Module with 10W Amplifier
11
1
st
track is finished playing in SPI flash
7E FF 06 3E 00 00 01 xx xx EF
2
nd
track is finished playing in SPI flash
7E FF 06 3E 00 00 02 xx xx EF
1) There is a returned data after a track is finished playing. For example, the returned data is 7E FF 06 3D 00 00 01 xx xx EF.
0x3D represents SD card and 0x3E represents SPI flash. 0x00 and 0x01 represents the 1
st
track. 0x01 and 0xF4 represents
the 500
th
track (0x01F4=500).
2) Because all of the files (tracks) in the storage device are read in physical sequence, the returned data still follow the physical
sequence, which needs to be noted.
4.5.3. Returned data of feedback from module
Module returns ACK
7E FF 06 41 00 00 00 xx xx EF
1) In order to enhance stability between data communication, the function of a feedback from module is added. Once there is a
feedback to MCU from the module, it means the module has successfully received the command that MCU sent out. 0x41 is
the returned command by module.
2) Users are free to choose this feedback or not. It’s also fine not to choose this function.
4.5.4. Returned data of errors
Returned Data of Errors
Meaning Description
7E FF 06 40 00 00 01 xx xx EF
Module busy (this info is returned when the initialization
is not done)
7E FF 06 40 00 00 02 xx xx EF
Currently sleep mode (supports only specified device in
sleep mode)
7E FF 06 40 00 00 03 xx xx EF
Serial receiving error (a frame has not been received
completely yet)
7E FF 06 40 00 00 04 xx xx EF
Checksum incorrect
7E FF 06 40 00 00 05 xx xx EF
Specified track is out of current track scope
7E FF 06 40 00 00 06 xx xx EF
Specified track is not found
7E FF 06 40 00 00 07 xx xx EF
Inter-cut error (an inter-cut operation only can be done
when a track is being played )
7E FF 06 40 00 00 08 xx xx EF
SD card reading failed (SD card pulled out or damaged)
7E FF 06 40 00 00 0A xx xx EF
Entered in to sleep mode
When the module is powered on, it reads SD card first and if SD card is not available it goes to SPI flash.
4.5.5. Returned data after a storage device is plugged in or pull out
Status
Re turned Data