DFRobot DFPLayer Mini Manuel - Sayfa 3

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DFPLayer Mini

3. Serial Communication Protocol

Serial port as a common communication in the industrial control field, we conducted an industrial level of

optimization, adding frame checksum, retransmission, error handling, and other measures to significantly

strengthen the stability and reliability of communication, and can expansion more powerful RS485 for

networking functions on this basis, serial communication baud rate can set as your own, the default baud

rate is 9600

3.1. Serial Communication Format

Support for asynchronous serial communication mode via PC serial sending commands

Communication Standard:9600 bps

Data bits :1

Checkout :none

Flow Control :none

Format：$S

VER

Len

CMD

Feedback

para1

para2

checksum

For example, if we specify play NORFLASH, you need to send: 7E FF 06 09 00 00 04 FF DD EF

Data length is 6, which are 6 bytes [FF 06 09 00 00 04]. Not counting the start, end, and verification.

3.2 .Serial Communication Commands

1).Directly send commands, no parameters returned

CMD

0x01

0x02

0x03

0x04

0x05

0x06

0x07

0x08

VER

Len

CMD

Start byte 0x7E

Version

the number of bytes after "Len"

Commands

Command feedback

Parameter 1

Parameter 2

Checksum

End bit

Function Description

Specify tracking(NUM)

Increase volume

Decrease volume

Specify volume

Specify EQ(0/1/2/3/4/5)

Specify playback mode (0/1/2/3)

Feedback

para1

para2

Each command feedback begin with $

Checksums are not counted

Indicate the specific operations, such as play /

If need for feedback, 1: feedback, 0: no

Accumulation and verification [not include

Normal/Pop/Rock/Jazz/Classic/Base

Repeat/folder repeat/single repeat/ random

checksum

0x7E

Version Information

pause, etc.

feedback

Query high data byte

Query low data byte

start bit $]

End bit

0xEF

Parameters(16 bit)

0-2999

0-30

, that is