topic Re: P.E. K70 and LCD Question in Kinetis Microcontrollers

P.E. K70 and LCD Question

crezyoz — Fri, 20 Jul 2012 08:16:31 GMT

I am just getting started with PE. Trying to build an LCD driver for a monochrome Electro Luminiescent display. (HYSNC/VSYNC/ 2 wire interface/1bpp)

However, when I go to set the Pixel Clock there is no entry in the Component Inspector. It is blank. Everything else went ok.

Any advice?

Re: P.E. K70 and LCD Question

crezyoz — Fri, 20 Jul 2012 08:52:32 GMT

Found it.. sorry for the noise.

Re: P.E. K70 and LCD Question

squadmcu — Fri, 26 Oct 2012 17:24:01 GMT

Hi Phil! How did you solve this?

Re: P.E. K70 and LCD Question

crezyoz — Sat, 27 Oct 2012 14:50:30 GMT

After a good deal of trial and error I determined that the type of EL display I am using can not be driven from the K70 in the 1bpp mode. Apparently the K70 can not keep the pixel clock running continuously in that mode only . So I had to use 8bpp mode and only use one bit to drive the display. This had a negative impact on my design because it meant I had to add DDR to the design. The frame buffers grew to 128k and I need 4 of them. I REALLY wish it had worked. I hope they make it very clear in the next set of docs for the LCD interface. It was an expensive week figuring that one out.