HDMI-Test

HDMI Test pattern generated by the FPGA displayed on an external LCD TV

Zedboard Switches with OLED Display

1. Format an SD card with one vfat partition (this is the default for the SD card that comes with the Zedboard)
2. Download http://vserver.13thfloor.at/Stuff/AXIOM/ALPHA/axiom_alpha_hdmi_test_v0.1.zip and put all the files in the zipped folder onto your SD card (not into a subfolder)
3. Connect a monitor to the Zedboards HDMI port and turn on the monitor.
4. Shift all switches on the Zedboard down
5. Boot the Zedboard
6. After booting is complete turn switch SW3 (fifth from the left) up
7. Play around with the switches to alter the generated patterns

1 Notes

If the Zedboard is booting via TFTP by default use an UART / serial console and interrupt the bootloader then type:

env default -f
saveenv
reset

The last command will reboot the Zedboard - alternatively you can also push the right pink pushbutton on the Zedboard.

2 Commands

The lower 4 switches select the pattern, while the upper four modify the size: black, red, green, blue, lines h/v/both, bars h/v and checkers

The idea is to check this on different displays and if necessary adjust the timing parameters

There is, for example, a configuration for 1280x768 as well which can be activated by running:

/usr/script/gen1280_init.sh

The default 1080p mode:

/usr/script/gen1920_init.sh

If you unplug and replug a display, you need to execute:

/usr/script/adv7511_init.sh

You can adjust the pixel clock with:

echo 135000000 >/sys/class/fclk/FPGA2/set_rate

in 1280 mode for example you need to adjust the pixel clock to:

echo 75000000 >/sys/class/fclk/FPGA2/set_rate