Matrix Orbital GTT70A - Manual (Page 12)

Command Summary 8
2 Commands
2.1 Basic Commands
1.1 Set
Customer Data Dec
Hex
ASCII 254 52
FE 34
þ 4
Length Data
Length Data
Length Data 2.0
Write up to 255 bytes of data to the userdata.dat file in the \system\ folder of the SD card. This data can be used
for any purpose the end user sees fit including unit identification, network information, system settings, or
anything else specific to the module.
Length Byte Length of the data to be transferred, in bytes.
Data Byte(s) Data to be written to the SD card.
1.2 Get
Customer Data Dec
Hex
ASCII 254 53
FE 35
þ 5
2.0
Read data from the userdata.dat file in the \system\ folder of the SD card, previously written using the Write
Customer Data command.
Return Message 252 53 Length Length Data
Length Byte Length of the data to be transferred, in bytes.
Data Byte(s) Data read from the SD Card.
1.3 Set Backlight
Brightness Dec
Hex
ASCII 254 153
FE 99
þ ™
Brightness
Brightness
Brightness 2.0
Set the brightness of the display backlight.
Brightness Byte The backlight brightness, a value between 0 (off) and 255 (maximum).
1.4 Get Backlight
Brightness Dec
Hex
ASCII 254 154
FE 9A
þ š
2.0
Read the current backlight brightness setting.
Return Message 252 154 Length Brightness
Brightness Byte The current backlight brightness.
1.5 Write
ScratchPad Dec
Hex
ASCII 254 204
FE CC
ю М
Index Length Data
Index Length Data
Index Length Data 2.0
Write data to volatile memory for temporary storage during operation. Total memory size is 512 bytes.
Index Short Starting index of the data to be written.
Length Short Length of the data to be transferred, in bytes.
Data Byte(s) Data to temporarily save in volatile memory.