SSD1306 as a framebuffer with fbtft driver on a raspberry pi 2

Question

I am facing an issue when trying to use my oled screen as a standard and simple linux framebuffer. I followed these instructions for the wiring https://learn.adafruit.com/ssd1306-oled-displays-with-raspberry-pi-and-beaglebone-black/wiring

And try to load the driver with

modprobe fbtft_device name=adafruit13m debug=1 gpios=reset:24,dc:23

The driver seems to load correctly.

However, I can't get to show an image on it with fbi:

fbi -d /dev/fb1  -a happycat_oled_64.ppm 

using "DejaVu Sans Mono-16", pixelsize=16,67 file=/usr/share/fonts/dejavu/DejaVuSansMono.ttf
ioctl VT_GETSTATE: Ioctl() inappropré pour un périphérique (not a linux console?)

I found a discussion on github about a problem that may be related: https://github.com/notro/fbtft/issues/169

Has someone managed to get this little screen working as a framebuffer, and would share some details? Do you know another way to test the framebuffer?

As a side note, the adafruit tutorial provides several python examples that uses a userspace driver, and I managed to show an image using them.

Answer 1

Do you know another way to test the framebuffer?

the command "dmesg" gives out all loaded modules, if you loaded a module correctly then it should appear at the end of a gigantic output of modules.

[roughly the last 10 lines are description of the module]

fbi -d /dev/fb1 -a happycat_oled_64.ppm

using "DejaVu Sans Mono-16", pixelsize=16,67 file=/usr/share/fonts/dejavu/DejaVuSansMono.ttf

ioctl VT_GETSTATE: Ioctl() inappropré pour un périphérique (not a linux console?)

I'm not sure what this means, but my little bit of french allows me to translate the following: "Input-Output-Controll stopped the application due to inappropriate input for this device." Check your arguments, that might help.