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DA852X-UG02-608 Page 27 of 47
User Guide Release 2.0
DA852X E Ink Evaluation Kit
Display Controllers
Figure 12.
Example Alphanumeric display
The procedure is as follows:
1. Capture a slide which represents the letter A in any segment position. This would involve clicking on
segments A-N. Save this as filename A.txt . Clear the display and repeat for letters B through Z and 0
through 9.
2. Test the letters A-Z 0-9 using the Alphanumeric input control.
3.
Create a file (default name is alpha_defs.txt). This should contain the following:
0
X0
Y0
1
X1
Y1
2
X2
Y2
Etc for all alphanumeric character locations
X0,Y0 is a reference position of the character location used to generate the alphanumerics A-Z, 0-9. It can be any
identifiable point of the symbol, such as the centre point, or lower left. The only requirement is that the same identifiable
point is present on all copies of the character.
X1,Y1 is the identified position of the leftmost location. (This may be the same as X0,Y0).
X2, Y2 is the identified position of the next location to the right.
X3,Y3 through Xn,Yn will be the identified position for the next positions to the right.
It is always possible to construct a slide for a defined word that does not use this mechanism, e.g. create a sequence
“TEST.txt” which places the word TEST on the above display. You are free to choose whichever method is most
convenient to you.
