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FN-M16P

FN-M16P Embedded MP3 Audio Module

Unspecified 

Flyron Technology Co., Ltd.

7E FF 06 40 00 00 0A xx xx EF Entered into sleep mode

www.flyrontech.com

When the module is powered on, it reads SD card first and if SD card is not available it goes to USB flash.

3.5.5 Returned data after a storage device is plugged in or pull out

Status

USB flash is plugged in

SD card is plugged in

USB cable connected to PC is plugged in

USB flash is pulled out

SD card is pulled out

USB cable connected to PC is pulled out

Returned Data

7E FF 06 3A 00 00 01 xx xx EF

7E FF 06 3A 00 00 02 xx xx EF

7E FF 06 3A 00 00 04 xx xx EF

7E FF 06 3B 00 00 01 xx xx EF

7E FF 06 3B 00 00 02 xx xx EF

7E FF 06 3B 00 00 04 xx xx EF

0x3A represents a device is plugged in while 0x3B represents a device is pull out. 0x01, 0x02, 0x04 represent USB

flash, SD card and USB cable connected to PC respectively.

3.6. Detailed Annotation of Control Commands

3.6.1.Specify playback of a track(under the root directory of a storage device)

The available selective tracks is from 0001.mp3/wav to 3000.mp3/wav under the root directory of the storage

device. Actually it can support more, but if we make it support more, the operation speed will become slow. Usually

most of applications do not need to support much more files.

1).For example, select the first song played, and send the command 7E FF 06 03 00 00 01 FE F7 EF

7E --- Start byte

FF --- Version Information

06 --- Data length (checksum not included)

03 --- Actual command(specify playback of a track)

00 --- 0x01: need feedback, 0x00:no need feedback

00 --- Most significant byte of the track(MSB of Parameter)

01 --- Least significant byte of the track(LSB of Parameter)

FE --- Most significant byte of checksum(MSB of checksum)

F7 --- Least significant byte of checksum(LSB of checksum)

EF --- End byte

2).Regarding track selection, if choose the 100th song(track), firstly convert 100 to hexadecimal. It is double-byte by

default, i.e. 0x0064. MSB=0x00; LSB=0x64

3).If you choose to play the 1000th song(track), firstly convert 1000 to hexadecimal. It is double-byte, i.e. 0x03E8.

MSB=0x03; LSB=0xE8

4).And so on in the same way to the other operations, as in the embedded area hexadecimal is the most convenient

operation method.

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