MP3 voice player module UART serial port control intelligent voice broadcast compatible with electronic building block music SP5F

Pins definition

Electrical Characteristics

Product size

Testing steps

1、Connect CX-SP5F to a computer by a USB to TTL module(CX-340 recommended); connect 5V、TXD、RXD、GND；

 TX and RX are cross connected.

2、Start the serial debugging tool APP, and finish settings。Set the baud rate of the serial port to 9600.

Note：1）Can be supplied by 5VDC that USB to TTL module output.  it is not available that supply by USB port 

of computer, because it will work in download mode, while connecting to computer by USB cable

2）Have downloaded test audio inside（00001.MP3……00009.MP3）.

Change voice files

Connect CX-SP5F to a computer by a USB cable, it will show a USB flash drive，copy voice files(mp3) into it

Note：Voice files must be renamed by five number such as 00001.mp3, 12345.mp3 and 65535.mp3

Protocol of UART

Settings of UART：Start：1bit；Data：8bits；Stop：1bit；Check：None；Baud Rate:9600.

1.Formate of protocol

Start：1 byte，fixed FE。                                                             Length：1 byte，the number of all bytes

Device ID：2 bytes，High byte first, low byte last. 0xFFFF is the broadcast，available to all devices. Range of 

device ID is 0~65534，Default device ID is 0x0001

CMD：1 byte, CMD code.

Data：0~n byte，High byte first, low byte last.

Sum Check：1 byte，the low 8 bits of all bytes sum.          

End:1byte, fixed BE.

2.CMD SPEC

Please download the“CX-SF5A developer kit”for detailed description

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