CustomizableTextLCD
The TextLCD library makes it easy to write text to a 2x16 LCD module, but it's not so easy to use it with another sized LCD, or to one that's not exactly the same as the one the library was designed for. This project aimed to fill that void by providing a mechanism to allow the parameters of the library to be changed without having to edit the source of the library.
Hardware
The hardware used for this project is a Supertwist DEM16217:
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- The items used in this project can be bought from Maplin
Software
Right-click the project to import to, select "Import Library..." and use the following details:
- Library SVN URL: http://mbed.co.uk/projects/cookbook/svn/CustomizableTextLCD/trunk
- Library Name: CustomizableTextLCD
View the library
Hello World!
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| Schematic | Photo |
#include "mbed.h" #include "TextLCD.h" class TextLCD_DEM16217 : public TextLCD { public: TextLCD_DEM16217(int rs, int rw, int e, int d0, int d1, int d2, int d3) : TextLCD(rs, rw, e, d0, d1, d2, d3) {} protected: virtual int bytesPerRow() const { return 0x40; } }; TextLCD_DEM16217 lcd(24, 25, 26, 27, 28, 29, 30); int main() { lcd.locate(2,1); lcd.printf("Hello World!"); } | HelloWorldDEM16217.bin |
| Source Code | Binary |
Resources
Datasheets
- The data sheet for this can be found on DEM16217 SYH LCD Module
PCB Library and Footprint
The Eagle PCB repsitory can be found at the Eagle page.
The Library for the CustomizableTextLCD is the same as TextLCD:
Development Log
I've had to power the DEM16217 using 5.0v, but it should be possible to power it using 3.3v - just haven't found the runes yet.
No pictures yet because I'm in the middle of another project, but will do this soon.
Would be nice to have a look at other LCDs and see if the customizable parameters are correct. Is there anything else that may vary?