NEO 2 Interface Developer’s Guide
481
Response Frame
Byte 0-9
Byte 10
Byte 11
Byte 12
Byte 13
Byte 14 …
Byte 13+n
Byte 14+n
Byte 15+n
Header Tag &
Protocol
Version
Command
Status Code
Data Length
(MSB)
Data Length
(LSB)
Data
CRC (MSB)
CRC (LSB)
ViVOpayV2\0
61h
See
This command use the secondary response mechanism. The device sends a first ACK response
immediately after it receives the command; it then sends a second response after the operation
times out or it receives a
Camera Take Photo Stop
command.
During the operation (that is, the interval between the first and second response), the device only
accepts the
Camera Take Photo Stop
command, which will cancel the current
Camera Take Photo
Start
operation.
The device rejects the
Camera Take Photo Start
command if an SD card does not exist.
Example:
•
TX:
56 69 56 4F 74 65 63 68 32 00 61 40 00 01 01 35 23
•
RX:
56 69 56 4F 74 65 63 68 32 00 61 00 00 00 4B 81
– First response
•
RX:
56 69 56 4F 74 65 63 68 32 00 61 08 24 46
– Second response (Timeout)
When the camera is turned on, a “take a picture” button appears on the display. If the button is
pressed, the device takes a picture, which is stored in SD card and displayed on-screen for five
seconds. The device stores a maximum of 20 pictures. Upon reaching capacity, the 21st picture
replaces the 1st.