Closed sonic2wb closed 7 years ago
I don't know how you power the display, but if you power it from the Pi you will probably run into strange issues due to undervoltage. I found this: https://github.com/sumotoy/RA8875/wiki/EastRising-and-Buydisplay-SPI-configuration-and-wiring
Thanks for the reply. i am still getting that white block. in front of the left side of the screen. it seems it is something in my display i even did the framebuffer copy from the wiki and it works except for that dang white box here is a better picture showing the mouse pointer . only other thing i know to do is try the fix in issue 96 if i can figure out how to compile drivers on the pi......
i ment issue 176
built a new driver with the fix from issue 176 i still have the box on the left side. it seems to be something in the int of the display. If i hook display to my arduino all the code and all of the display works just fine. I gave screen its own power source etc.. Guess ill just have shelve the display for now..
The only other thing i can think of is this display doesnt have a D/C pin? unless i am just missing it. i have the reset pin on gpio 25. oh and another note is the screen saver works on the frambuffer the screen goes all black.
It works! the patch in #176 did the trick. took a bit of time and research but i was able to compile a new ra_8875.ko and install it into my rasbian install. also did some testing my display works great at 24khtz
I will post a link to instructions and to the modified fb_ra8875.c file later today. I hope its possible to add the patch to the kernel source so on the next kerel update i wont have to rebuild the module.
I'm no longer a maintainer of fbtft. https://github.com/notro/fbtft/wiki/Development
So I wired up the display but theres no RS (aka d/c) pin. unless i am missing something. When i modprobe the driver the screen lights up and u can see the frame buffer fill the screen with black lines. dmesg so the display is detected. then i run the startx command and the desktop appears on the display but only the right half of the display works. I can see the mouse and can click on the wifi icon and date and time. u can even kinda see the start menu trying to be drawn behind this White block.
if u run it in console that white box is now black and the console text scrolls up behind it. its driving me crazy!! I thought at first the lcd was bad but I hooked up my arduino mega and all the test apps run just fine. and the display shows just fine.
any ideas?![20472573_10155520696251064_285916991_o](https://user-images.githubusercontent.com/431663/28700228-78ada2b4-731c-11e7-868e-84a4445e56bc.jpg)