
- 16 -
www.hzgrow.com
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
Header
Module address
Package
identifier
Package length Instruction code
Checksum
0xEF01
Xxxx
01H
03H
0aH
000eH
Acknowledge package format:
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
Header
Module
address
Package
identifier
Package
length
Confirmation
code
Checksum
0xEF01
Xxxx
07H
03H
xxH
sum
Note 1
:
Confirmation code=00H: ready to transfer the following data packet;
Confirmation code=01H: error when receiving package;
Confirmation code=0fH: fail to transfer the following data packet;
2. The upper computer sends the command packet, the module sends the acknowledge
packet first, and then sends several data packet.
3. Packet Bytes N is determined by Packet Length. The value is 128 Bytes before
delivery.
Data package format:
2 bytes
4bytes
1 byte
2 bytes
N byte
2 bytes
Header
Module
address
Package identifier
Package
length
Package
content
Checksum
0xEF01
xxxx
0x02- have
following packet
0x08 - end packet
N+2
Image data
sum
Download the image
DownImage
Description: to download image from upper computer to Img_Buffer.
Input Parameter: none
Return Parameter: Confirmation code (1 byte)
Instruction code: 0bH
Command (or instruction) package format:
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
Header
Module address
Package
identifier
Package
length
Instruction
code
Checksum
0xEF01
Xxxx
01H
03H
0bH
000fH
Acknowledge package format:
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
Header
Module
address
Package
identifier
Package
length
Confirmation
code
Checksum
0xEF01
Xxxx
07H
03H
xxH
sum
Note: 1
:
Confirmation code=00H: ready to transfer the following data packet;
Confirmation code=01H: error when receiving package;
Confirmation code=0eH: fail to transfer the following data packet;
2.The upper computer sends the command packet, the module sends the acknowledge