I'm using Buildroot 2018.02 to create a custom Linux to run my raspberry pi 3.
I'm trying to display a pygame window on the external hdmi screen from command line.
So far, I've been able to boot the pi3 with the default configuration running
make raspberrypi3_defconfig, I've just changed the toolchain to use
glibc instead of
Flashing the first default configuration
make raspberrypi3_defconfig make menuconfig make dd if=output/images/sdcard.img of=/dev/sdb bs=4M
The rpi boot well, I can log as root using a FTDI cable.
Adding pygame ans ssh support
make menuconfig to select both
python3 packages and I select the external python3 package
After reflashing, the rpi boots well and I can connect through ssh.
At this moment nothing is printed on the hdmi screen. If I open a pygame window running a python3 shell nothing happens.
# python3 Python 3.6.3 (default, Jun 17 2018, 20:05:31) [GCC 6.4.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import pygame >>> screen = pygame.display.set_mode((300, 200)) >>> pygame.display.flip() >>> quit() #
Adding X.org support
I have then enabled
X.org X Window System with the following configuration.
BR2_PACKAGE_XAPP_TWM=y BR2_PACKAGE_XAPP_XCALC=y BR2_PACKAGE_XAPP_XCLOCK=y BR2_PACKAGE_XAPP_XEYES=y BR2_PACKAGE_XAPP_XINIT=y BR2_PACKAGE_XDRIVER_XF86_INPUT_KEYBOARD=y BR2_PACKAGE_XDRIVER_XF86_INPUT_MOUSE=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_CIRRUS=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_FBDEV=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_VESA=y BR2_PACKAGE_XORG7=y BR2_PACKAGE_XSERVER_XORG_SERVER=y BR2_PACKAGE_XTERM=y
However if I run again the python instructions above, the screen become totally black.
If I quit the python shell, the screen returns to the picture state.
I have also tried after exporting display with
export DISPLAY=:0.0 but with the same result.
If I don't run
startx the result is the same except that console log replace the windows on the picture.
What else could I do to be able to display a pygame window from command line ?