Shalaj Lawania

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8 years, 6 months ago.

Errors with LPC1768

Hey,

I can't get my display to work with the LPC1768. I've tried two displays (with the EPD extension board), the first one at times displays for a while and then goes haywire after a few clear screen commands are sent. The second screen didn't work at all.

I have my own code for these displays, which works perfectly with the 1.44 inch display. I was using a Nordic nrf51822 initially, but had to switch to LPC1768 for the bigger display. I've tried the same 'Hello mbed' code provided, with the provided libraries and yet nothing seems to be working.

I've even tried it on the FRDM-KL25Z board, but I have similar problems.

One of the displays is brand new as well, so I doubt that's the problem.

Any help would be greatly appreciated!

Question relating to:

Last updated: 25 Jun 2014
A lib to handle a E-Paper display from Pervasive Displays. There is a interface board from Embedded Artists. The lib can handle graphic and text drawing and is using external …

3 Answers

Tyler Lisowski
8 years, 2 months ago.

I have adjusted Peter's Library to work with the new board will publish it soon. Just needed to tweak how the pixels are set in the setpixel function, and change the constructor up a bit

sebastien videau
8 years, 2 months ago.

Hello, the new screen is updating fine with the new library (very slow) but the "pixel" function of Peter Drescher's code does not seems to be working. Do you have an idea to make this function work ? Thanks

Peter Drescher
8 years, 6 months ago.

Hello Shalaj, I have test my demo with the actual mbed lib. It is working with the embedded artist board. There is a message on the embedded artist website : Note that the EM027BS013 replace the now obsolete EM027AS012. The software driver must be updated to support the new EM027BS013

I think you have a new display type. There is a lib from embedded artists to support the new display :

http://developer.mbed.org/users/embeddedartists/code/EM027BS013/

Ahh, that might be it!

Do you have any sample code for mBed LPC1768/FRDM boards on the updated libraries?

Cheers.

posted by Shalaj Lawania 26 Nov 2014

Sorry, but I have no new display.

posted by Peter Drescher 26 Nov 2014