Well, projects using two displays, could share reset, but one driver will then control the line for both displays. For D/C, this can't be shared between drivers.When wiring, can they share any pins on the GPIO?
Yes I guess it does. I started my work based on the st7735fb.c driver. But I haven't got one, so I don't know for sure.BTW; as the Sainsmart use a ST7735R, your driver should also be able to run the Adafruit 1.8"
Nice, let me know how it goes.I'll give your driver a go tonight.
I just remembered that the Sainsmart display was configured BGR instead of RGB. The colors were wrong, so I had to do a conversion. So even if they have the same controller, they are configured differently.BTW; as the Sainsmart use a ST7735R, your driver should also be able to run the Adafruit 1.8"
If you don't know, you're using 8-bit because that's what the native SPI controller driver supports.mwilliams03 wrote:a stupid question, how do I know if I'm using 8 or 9 bit SPI?
I haven't experienced that. Have you connected the RST reset pin to a GPIO?mwilliams03 wrote: BTW: I just realized that if I do a reboot, the display stops working.
I have to actually remove the power, wait about 10 secs, then restart.
Have you built the kernel your self or have you used an image from: https://github.com/notro/fbtft/wiki ?nejemia wrote: I have the 1.8" Adafruit working and need some extra information-
See bottom of this page: http://www.whence.com/rpi/nejemia wrote: Also, I would like to use "fbterm", any idea how to instruct "fbterm" to use /dev/fb1 and /dev/tty1 ?
The fbtft image has the MINI4x6 font compiled in. See : https://github.com/notro/fbtft/wiki/Boot-consolenejemia wrote: Is it possible to change fonts ? Too big for the 1.8" Display.
If you by this mean the sainsmart18fb and adafruit18fb drivers, they are identical except for:nejemia wrote: By the way, I used sainsmart and adafruit with same Display and did not notice differences, need to run more testings.
Sorry, can't help you with that.nejemia wrote: ... want to Display formatted texts from a Text file generated by another program.
What is the best (correct) way to do it?
Do you have a link to the product page ? I have only come across a Watterott of that size and with SPI, but Watterott uses ili9341.nejemia wrote: Also, I have another Display which uses ILI9320 and is 320x240 so I will try it. It is SPI controlled and uses SPI mode 3 to work ( at least with Arduino).
Thanks for the praisenejemia wrote: Again, thanks a lot and congratulations, you are the Master of the Raspi Displays!
Oh yes, I remember that one now. I have it on the shelf, but haven't used it since the pins is spaced so close. What do you use to connect to the headers?nejemia wrote: The Display I am planning to test is the following: http://www.hotmcu.com/28-touch-screen-t ... -p-42.html
With an Adafruit 1.8" display this should probably work:nejemia wrote: I still need some help with the 1.8" Display, I can not make it to display in the Landscape mode, I apply the rotate command, but each time I resume the use of the framebuffer, everything returns to the normal vertical view.
Code: Select all
modprobe fbtft_device name=sainsmart18fb speed=8000000 modprobe sainsmart18fb bgr rotate=1
Maybe, flexfb was made for this purpose, but I haven't had any reports about it yet.nejemia wrote: I have checked the HY28-A Display SPI version and it does not use the D0-D7 data lines, just plain commands through the SPI like the Adafruit.
Do you think the generic tftfb driver can handle this?
I guess SPI is for the touch controller.nejemia wrote: I have another beautiful display using the same controler but 3.2", unfortunately this uses 16 data lines along the SPI...
Thanks for letting me know. I had reports that the other Wattterott display didn't work, so I wasn't sure about the state of the r61505ufb driver.fdufnews wrote:Hi notro thank you for your frame buffer.
Following the informations on your wiki, I have tested with success the MIO283QT-2