Part: CubeSense V3
Doc: User Manual
Ver:
1.11
Page: 9
Byte 6-7:
Bytes 6-7 forms an unsigned 16-bit integer that indicates the elapsed time since the
previous second, in milliseconds.
Table 3
–
Serial number TLM
Telemetry frame ID
1
Name
Serial number
Frame length
(bytes)
2
Channels
Byte
No
Length
(bytes)
Channel
Data type
Detail
0
2
Serial
number
Unsigned
16-bit
Number that defines the
serial of CubeSense
Byte 0-5:
Each CubeSense has a unique serial number.
3.2
Managing memory contents
The CubeSense memory module is divided into two halves, top and bottom. This is illustrated
in Figure 2.
2
0
4
8
K
ilo
b
ytes
To
p
-
1
M
B
Used for:
-Image capture from camera
-Sun detection
-Nadir detection
B
o
t
-
1
MB
Used for:
-Image capture from camera
SRAM
Figure 2
–
SRAM layout
Each 1 MB (1048576-byte) halve can store one CubeSense image. The main functions
CubeSense can execute are:
1.
Capture an image to one of the halves of the SRAM
2.
Perform detection on the image stored in the
top
halve the SRAM
3.
Download the image stored in one of the halves of the SRAM.
Only one of these functions can be executed at any given time. If the command is given to
execute multiple functions, they will be executed sequentially. It is important to note which
part of which SRAM will be influenced by a given instruction, since this will overwrite the
