Standard

1、The server issues MQTT instructions, usually in JSON format.
2、The cabinet replies with execution results, usually in Hex format.
3、4. The server for device authentication, initial configuration, online upgrade, whole machine reporting, and screen advertising update needs to provide HTTP API interface

Command Send ▼

Subscribe to topic：/powerbank/{uuid}/user/get

Data format: JSON string

Name	Identification code	Data type	Remarks
command name	cmd	string	command name
command data	data	string	command data
Main control board serial port	io	string	Default: 0; Range: 0-1

Example, send an instruction to pop up position No. 2

{ "cmd":"popup", "data":"2", "io":"0" }

command Reply △

Publish to topic：/powerbank/{uuid}/user/update

Data format: bytecode data, Hex, hexadecimal analysis

Bytecode	Name	Identification code	Remarks
Byte[0]	Head code	head	Default: 0xA8
Byte[1~2]	Packet length	length	For example: 0x00 0x14, converted to decimal, the packet length is 20
Byte[3]	Command name	cmd	For example: 0x21, means the device replies: Position pop-up result
Byte[4~n]	Custom data	data	Report different data according to different instructions
Byte[n+1]	Check code	verify	Packet complement check

Example: Reply to the pop-up No. 2 warehouse result

A8 00 14 21 10 01 01 02 00 00 00 00 00 00 00 00 00 00 00 00

A8 ------------------------------------------------------ Byte[0] Head code
00 14 --------------------------------------------------- Byte[1~2] Packet length：20
21 ------------------------------------------------------ Byte[3] Command name 
10 01 01 02 00 00 00 00 00 00 00 00 00 00 00 ------------ Byte[4~n] Custom data
00 ------------------------------------------------------ Byte[n+1] Check code