User's Manual

HF-A11x V3.1 User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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（Serial Number need keep the same with “SEND” command’s serial number）
 Reserve Part: 0000
（All reserve part shall set to “0”）
 Acknowledge Information: XX
（”00” -- OK，”FF” or others --NOK）
¾ Data Receive Request Command
（RECV）
 User device use this command to send data receive request to HF-A11x modules
 “RECV” frame structure:
02 SS LLLL0000
012345
CCCC
67
 Command Word: 02
 Serial Number: SS
 Reserve Part: 0000
（All reserve part shall set to “0”）
 Request Data Length: LLLL
 CRC Check: CCCC
¾ Data Receive Acknowledge Command (RECV ACK)
 HF-A11x module reply this command to acknowledge receive “RECV” command
and insert data (as user device request’s length or shorter) in the frame.
 “RECV ACK” frame structure:
 Command Word: 02
 Serial Number: SS
（Serial Number need keep the same with “RECV” command’s serial number）
 Reserve Part: 0000
（All reserve part shall set to “0”）
 Data Length: LLLL (Length shall equal or shorter than request data length)
 Data Content: DDDD……..DDDD
 CRC Check: CCCC
1.4.2.2. Agreement Transmission Procedure
Agreement transmission mode procedure as following chart:
(This is a procedure user device hope to send data to HF-A11x module)