ACR3901T-W1 – Reference Manual
Version 1.02
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Page 59 of 100
7.1.13.
Check Button Status
This command checks the current button status.
Command Format
Offset
Field
Size
Value
Description
0
abData1
CommandCode
1
1Bh
Command Code of Check
button status
1
Len (CommandLength)
1
00h
Number of extra bytes of data
2
Data
0
-
Response Format
Offset
Field
Size
Value
Description
0
abData2
ResponseCode
1
9Bh
Response Code of Check
button status
1
Len (CommandLength)
1
01h
Number of extra bytes of data
2
Data
1
-
00h = Release
01h = Pressed
Example:
Request = 1B 00
Response (Buttons is pressed) = 9B 01 01