Nrthugu

1-I have built Qt5.4.1 and Qt4.8.4 for an embedded device (based on armv5tejl) and all things work except GUI.

2-It seems that no frame buffer device exists:

~/bin $ ls -alh /dev/

drwxr-xr-x    3 0        sandbox        0 Nov 10 11:48 .

drwxr-xr-x   14 0        root           0 Nov 14  2017 ..

srw-rw-rw-    1 0        root           0 Nov 10 11:48 log

crw-rw-rw-    1 0        root        1,   3 Nov 10 11:48 null

crw-rw-rw-    1 0        root        5,   2 Nov 10 12:10 ptmx

drwxr-xr-x    2 0        root           0 Jan  1  1970 pts

crw-rw-rw-    1 0        root        5,   0 Nov 10 11:48 tty

crw-rw-rw-    1 0        root      204,  66 Nov 10 12:05 ttyAMA2

crw-r--r--    1 0        root        1,   9 Nov 10 11:48 urandom

/proc $ cat devices 

Character devices:

  1 mem

  4 /dev/vc/0

  4 tty

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

  7 vcs

 10 misc

/proc $ cat devices 

Character devices:

  1 mem

  4 /dev/vc/0

  4 tty

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

  7 vcs

 10 misc

 13 input

 21 sg

 29 fb

 89 i2c

 90 mtd

100 softkey

116 alsa

122 pman

128 ptm

136 pts

150 pwmr

153 upc

154 kdrv_csc

180 usb

189 usb_device

204 ttyAMA

254 rtc



Block devices:

  1 ramdisk

259 blkext

  8 sd

 31 mtdblock

 65 sd

 66 sd

 67 sd

 68 sd

 69 sd

 70 sd

 71 sd

128 sd

129 sd

130 sd

131 sd

132 sd

133 sd

134 sd

135 sd

3-from dmesg log:

Console: switching to colour frame buffer device 80x30

CLCD: PL110 CLCD hardware, HIE AT-T050QGH-02, VGA Landscape (supports 640x480 @ 24Mhz) display

4-Device itself has a SDK and display things using that SDK and libs in HTML format.

5-I have a restricted user on the device and I'm using my own BusyBox v1.20.0.

My Questions:

1-Is it possible for me to use device display via Qt without using provided SDK?

2-How could I access to the display device?

Any help would be appreciated.

Thank you very much