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8 years, 11 months ago.
8" Screen
Just to let you know I have an 8" WVGA screen working fine with the demo code. However with full backlighting, it uses about 830mA at 5V supply so with the LPC1768 board its getting close to the limit of onboard regulator (950mA ). To get the LCD to start up reliably, it needs to be powered up AFTER the mBed board. Kim
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8 years, 11 months ago.
Hi Kim,
That's great news! Did you have to make any changes to the library? and can you let me know what they were (or apply a pull-request if you didn't). My current designs that use this have a beefier power supply, and a separate regulator for this display, so the mbed module isn't overloaded.
The RA8875_Demo works just fine, just adjust the "lcd.init(800,480);" to suit screen size. Tried a couple of the other demos, TouchColors seems working okay, Madelbrot didn't work but haven't looked into it. Kim
posted by 20 May 2015I have since found that there are other changes needed for the 800x480 screen layout. By comparing the initialization code form the buydisplay.com samples, I noted some register setting changes. I've applied those to the code in version 134 of the library (Dec 2016). If you use the higher resolution display, you should look at these differences immediately and likely apply them.
posted by 20 Feb 2017