AVR Freaks

Hello:

Thanks for the information. Meanwhile, I had digged a little bit more into this forums and at some links (http://avr32linux.org/twiki/bin/...) I found, it seems that LCD drivers are supported in mainline (lcdc?). It seems also that there are drivers for SPI and TWI, as well as for USART, MMC, SD, etc. Doesn't look too complex for Linux experienced people (that is not my case, though).

I will dig further to get a better grasp about how all that puts together. This forum is a mine of information, and it seems also that attaching TFT's to NGW100 is a common place. Sorry to post again about this subject.

But in my case, I **need** 800x480 pixels resolution... because this board is intended as a test tool that should display patterns on the LCD, that is the 'Device Under Test'. It should respond (not so fast, no real time) at ethernet commands, send some CAN messages, probably Lin messages also, as well as I2C/TWI comms, load data from SD card, and display it on the LCD.

We have to make only few test tools, so any other option is totally overkill, as well as too big (our space is somewhat limited). My boss told me to investigate on this way this morning, and have some feedback this afternoon, since he would order it today. Finally, it seems that we well wait a little bit more.

Thanks again for the info.

Hi, I'm back again. Finally I've managed to order grashopper board, and a colleague had plugged a 640x480 TFT panel onto it. It works with that panel at 27.5MHh.

But for the project I'm working on, I had soldered a 800x480 TFT panel that requires a 33MHz pixel clock, but I can't manage to change this frequency. Maybe I'm a dummy with this (well, in fact >>I'm a dummy<< and totally noob with Linux kernels) issue, and the settings in the struct fb_videomode at icnova_base.c file simply is ignored. My value is .pixclock = KHZ2PICOS(33000), but it doesn't respond to any change, even when changing the resolution or any other parameter, it responds correctly.

My colleague told me that perhaps I should change some parameter for the PLL used in another file, but he can't remember what and where. Can someone help me and point me in the right direction?

Thank you very much in advance,

Hello again:

Thanks for the info. I had tried fbset, and it works like a charm to change display resolution, but not to change display timmings. And given the application, where I have strict display timmings as well as display resolution, there is no choice than change pixel clock. How can I change that parameter? I tried to do it from icnova_base.c file, but it doesn't do anything but changing some of the margins and sync widths, within certain limits.

Yes, I had done exactly that, but there is no response. I had tried also with fbset -t 33333 200 ... and a bunch of settings, without any result. Even those extra settings (sync widths, positions, etc) can't be changed from fbset, and only from icnova_base.c. Even that, pixclock can't be changed in any way, while the other settins change accordingly rebuilding the root (BTW, I'm using NFS boot, so changes apply relatively fast).

Thanks for your help and patience,