Hi
I've used these displays for a number of years now on Arduino and now mbed. After a recent accident with a 12V supply I've had to purchase more. The difference this time is that they use the HT1632C driver not the HT1632. I had converted my Arduino library to work on mbed and its available at https://mbed.org/users/SomeRandomBloke/code/HT1632_LedMatrix/ At present I dont have any examples as this was a quick hack to get the library working for my own use with the Vodafone dongle to display received SMS.
The library has a font file and can support upto 4 displays. The new displays dont stack vertically any more. The original ones I had were able to be stacked vertically to produce a nice 64x16 display. Now its limited to a max of 128x8 which is great for a scrolling message display. The library also has basic graphic functions for drawing points, lines, rectangles and circles, although these are a bit limited at 8 pixels high.
Please be aware that the library is a quick conversion from my arduino library to work on mbed and as such the documentation is pretty much non-existent. It was originally based on code for these displays when they were first used by Arduino people and enhanced with the font file and graphic drawing capabilities. The font file came from another library so there may be references to nokia displays in there!
Todo:
- Add proper documentation to library
- Add examples - scrolling message, simple graphic demos, character positioning.
- Add support for 24x16 displays when I get hold of a few.
If you find this library useful then let me know. Any issues, corrections or other comments welcome.
thanks
Andy
Hi has anyone managed to get a 832 LED Matrix working with the MBED?
I've tried everything to get mine working but nothing happens! the wiring appears correct and I've even compared my code to arduino and PIC code which drive the same boards and I appear to be doing the same thing.
Thanks in advance,
Ian