GLK12232-25-SM Matrix Orbital, GLK12232-25-SM Datasheet - Page 28

• Manufacturer Part Number: GLK12232-25-SM
• Description: LCD Graphic Display Modules & Accessories White Background Blue Text
• Manufacturer: Matrix Orbital

Specifications of GLK12232-25-SM

• Pixel Density: 122 x 32
• Module Size (w X H X T): 86 mm x 35 mm x 14.4 mm
• Viewing Area (w X H): 60.2 mm x 18 mm
• Backlighting: White
• Background Color: Blue, White
• Operating Temperature Range: - 20 C to + 70 C
• Attached Touch Screen: No
• Product: Graphic LCD Module
• Style: LCD Graphic Display
• Interface: RS-232, I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

From this point, the module treats all data as raw and just stores it away. The module will store the data, then
read it back from memory and send the read value back to the host. If the host system receives an incorrect
echo, it should send status as 0x08 instead of 0x01. This will terminate the transfer. Upon termination, the
module will delete the partially completed file and return to a ready state.
7.4.3 A Sample Font File
the font size. For this example we’ll use a 5x7 pixel font. Next, we have to draw the bitmaps for each of the
characters.
Matrix Orbital
Let’s look at a short sample font file containing only the letters "h", "i" and "j". First we need to define
NOTE If the module detects that the file will not fit in the available memory when the file
size has been transmitted, it will send 0x08 instead of 0x01. In this case, the host should
cease transmission. The module will return to a ready state.
0xFF (second byte of data)
0x01 (host confirms echo)
0x01 (host confirms echo)
0x01 (host confirms echo)
0x01 (host confirms echo)
0x01 (host confirms echo)
0x20 (third byte of data)
0xFF (first byte of data)
Table 4: Uploading the file to the Module
0x00 (high size)
’$’ (command))
0x5e (low size)
’2’ (reference
Host sends
0xfe
etc
GLK12232-25-SM
0x01 (file fits)*
Module sends
0xFF (echo)
0xFF (echo)
0x00 (echo)
0x20 (echo)
0x5e (echo)
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