Heart

1、The cabinet publishes data every 9 minutes and sends and receives the same data.
2、Publishing and subscribing are the same topic.
3、If the cabinet does not receive return data for 2 consecutive times, that is, for 18 minutes, the cabinet will determine that it is offline and restart.

Command Send ▼

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

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: 0x01 0x25, converted to decimal, the packet length is 293
Byte[3]	Command name	cmd	Default: 0x7A, heartbeat detection
Byte[4]	Control board address	controlIndex	Default: 0x10
Byte[5~n]	Signal value;Backup Power	signal	ASCII display, for example: CSQ:26;BP:0
Byte[n+1]	Check code	verify	Packet complement check

Signal value (signal) The signal strength value range is 0 ~ 31, and the larger the value, the better the signal strength. Learn more

Parameter range	99	0~15	15~31
Signal strength description	No network	Weak	Better

Backup power status (backupPower)

-	Bit[3] Reserved	Bit[2] Reserved	Bit[1] Operation status	Bit[0] Support backup power	-
0x00	0	0	0	0	No backup power support; stop operation
0x01	0	0	1	0	Invalid value
0x02	0	0	0	1	Support backup power; stop operation
0x03	0	0	1	1	Support backup power; Running

Example

A8 00 11 7A 10 43 53 51 3A 32 37 3B 42 50 3A 30 FC

A8 ----------------------------------------------- Byte[0] header code
00 10 ---------------------------------------------Byte[1~2] package Length: 16
7A ----------------------------------------------- Byte[3] Heartbeat Detection instructions
10 ----------------------------------------------- Byte[4] Control Board address
43 53 51 3A 32 37 3B 42 50 3A 30 ------------------Byte[5~n] Signal value, ASCII display: CSQ:26;BP:0
1A ----------------------------------------------- Byte[n+1 ] Code verification

Command Reply △

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

Data format: bytecode data, Hex, hexadecimal analysis(Same content as the command issuance)

Example

A8 00 10 7A 10 43 53 51 3A 20 33 31 2C 39 39 7B