SIYI MK15 - 5 SIYI FPV App Usage

MK15 User Manual V1.4
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4.8 SIYI Datalink SDK
SIYI links can be integrated to customers’ own network or ground station by
acquiring SDK communication protocol.
4.8.1 Format
Field
Index
Bytes
Description
STX
0
2
0x5566: starting mark
CTRL
2
1
0: need_ack (if the current package need “ack”)
1: ack_pack (if the package is an “ack” package)
2-7: Reserved
Data_len
3
2
Data field byte length.
Low byte in the front.
SEQ
5
2
Frame sequence (0~65535) .
Low byte in the front.
CMD_ID
7
1
Command ID
DATA
8
Data_len
Data
CRC16
2
CRC16 check to the complete data package.
Low byte in the front.
4.8.2 Commands
Request Remote Controller Hardware ID
CMD_ID:0x40 ------ Request Remote Controller Hardware ID
Send data format
No.
Data Type
Data Name
Data Description
ACK data format
Uint8_t
hardware_id[
12]
Hard ID String (10 digits)
Example:
Send (HEX): 55 66 01 00 00 00 00 40 81 9c
Response (HEX): 55 66 02 0C 00 09 00 40 36 38 30 31 31 33 30 31 31 31 00 00 7b 8b
Request Remote Controller System Settings