n
Description :
Read the actual contrast value.
n
Command :
Command[0]
Command[1]
n
Data :
No data bytes.
n
Return data :
Data[0] = contrast value.
n
Example :
Read the actual contrast value of a projector with address
\x01. Suppose the contrast equals \x30.
Transmit
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
\x21
\x01
\xfe
\x01
\x21
\x01
\x23
\xff
157