lpcware

LCD controller outputting something different than framebuffer content

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by egnascimento on Thu Nov 26 04:49:17 MST 2015
Hi,
I'm using LPC1857 with a R61509 LCD and SDRAM with CS0.

I do test SDRAM before anything so it seems to be working fine. I'm working with RGB 16bit mode 565.

I fill SDRAM with 0x1F which should be pure blue then configure framebuffer to point to 0x1C000000.

The problem I see is that after everything is set, display is only noise with several colors. I checked with scope and I do see some pulses on Red and Green lines which is not expected since framebuffer has only blue info.

Can anyone see what I'm missing?

Thanks!

Outcomes