Figure 6.4. example of output control command, 2 implementing hardware, 1 hellodevice i/o demo board – SENA HD1100 User Manual
Page 31
Starter Kit and User Manual for the HelloDevice 1100
28
Number of Byte
Type
1
2
3
Output status control command
0x76
Output Contact Point Status
For example, if the user wants to set the HelloDevice output contact point 0, 1, 2 and 3 as high and others as low,
the value should be 0x000F and send the hexadecimal value 76:00:0F to the HelloDevice as shown by the Figure
6.4.
Output Control
Command
Output Contact Point MSB
Output Contact Point MSB
8 ~ 0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0x76
0x00
0x0F
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0000 | 0000 | 0010 | 1111 = 0x000F
Output Contact Point Status
Figure 6.4. Example of output control command
6.2 Implementing Hardware
In this chapter, the I/O demo board is configured as an interface between the HelloDevice and user I/O device.
6.2.1 HelloDevice I/O Demo Board
The HelloDevice I/O demo board is composed of 16 switches for input demo, 16 input display LED's and 16
output display LED's. The switches for input demo were designed to run at the “Low Active”, and the output
display LED's were designed to run at the “High Active”.
Switch for input demo
HelloDevice input contact
point
Input display LED
CLOSED
OPEN
LOW
HIGH
ON
OFF
HelloDevice output contact point
Input display LED
LOW
HIGH
OFF
ON