User's Manual

CHAPTER 3
Operations at the Application Level
45
Note: Only Analog1 to Analog6 are packed; the 16-bit Pulse
Counters are not.
Figure 7 shows the placement of various inputs on the connectors.
Figure 7. A723 Connector Inputs
The RF level is nonlinear and results from a table (which you can
get from Adcon as an ASCII file). The value of the battery can be
computed as follows:
The digibyte is essentially the reflection of several inputs or inter-
nal status bits on the A723; its structure is described below:
For more details, refer to the user manual for the A723 device.
The A733 (addWAVE) Frames
The addWAVE currently implements only one frame type (37). The
A733 samples the analog values with 10-bit resolution and stores
them as 12-bit values. Also, the A733 contains built-in logic to
sample 12 different analog inputs, as well as four 16-bit pulse
counters—all in all, substantially more data. Due to the limited
space available and in order to minimize the radio traffic, the
frames are slightly compressed, in that twelve 12-bit values are
packed in nine 16-bit words.
Analog4
Analog5
Analog6
Ground
Power
DIG1
PulseCounter1
1
2
3
4
5
6
7
Analog1
Analog2
Analog3
Ground
Power
DIG0
PulseCounter0
1
2
3
4
5
6
7
I/O A
I/O B
A723
Batt
V[]
BatteryLevel 20•
255
----------------------------------------------=
S.C.
res res res
DIG1 DIG0
b0
b7
S.C. = Solar Cell status
res = reserved
res res