Matrix Orbital GLK12232-25-SM - Manual (Page 40)

Syntax Hexadecimal 0xFE 0x57 [Num]
Decimal 254 87 [Num]
ASCII 254 “W” [Num]
Parameters Parameter Length Description
Num 1 GPO number.
Description This command turns ON general purpose output [num]. The standard
GPO’s on the GLK12232-25-SM output 20mA of current at 5V.
NOTE ON means the output is pulled HIGH.
Remembered Yes
9.4 Set Startup GPO state
Syntax Hexadecimal 0xFE 0xC3 [Num] [state]
Decimal 254 195 [Num] [state]
Parameters Parameter Length Description
Num 1 GPO number.
state 1 Startup state (0: Off, 1: On)
Description This command will set the startup state for the GPO on the next power
up. A value of one will cause the GPO to be off on the next startup
while a value of one will cause the GPO to be on.
NOTE This command does not affect the current state of the GPO.
Remembered Always
10 Keypad
10.1 Introduction
The GLK12232-25-SM supports up to a 25 key, matrix style, keypad and may be configured to allow
key presses to be automatically transmitted via RS-232 or polled through I 2 C. The GLK12232-25-SM also
allows for auto-repeating key presses, and remapping of all keypad character codes.
The connector is not keyed so the keypad will probably plug in either of two ways. The display will
not be damaged by reversing the connector. However, the keypad will generate a different ASCII character
mapping for each position. If the connector has fewer than 10 pins it should be centered on the display
connector. The keypad is scanned whenever a key is pressed;there is no continuous key scan. This means
that key presses are dealt with immediately without any appreciable latency. This also prevents electrical
noise which is often caused by continuous key scans.
Matrix Orbital GLK12232-25-SM 35