about hdmi video signal output
SanadaShinken opened this issue · 1 comments
SanadaShinken commented
Dear Sir:
after some try and error. there is still no video signal output from QMTech Wukong board. here is my project setting.
- using MMCM as system clock generator.
- using Sipeed 10 inch hdmi monitor for hdmi display.
product url : https://www.seeedstudio.com/10-1-inch-1200x1920-HDMI-IPS-LCD-Display-p-2863.html - add monitor setting into soc_linux.py of "linux on litex vexriscv" project.
- make bitstream with sipeed monitor support enabled.
- load bitstream into fpga.
- linux boot up and login with root account.
- check the monitor display and the result is the same as attachment image file.
- only flicking gray zone on display. no readable image appears.
- cat some binary data into /dev/fb0, the content of flicking gray zone will change. it seems the simplefb is working. but I'm not sure the result is correct or not.
- the timing of the used 10 inch monitor is verified by using hdmi output sample project which come from qmtech. the project url is as the following url.
https://github.com/ChinaQMTECH/QM_XC7A100T_WUKONG_BOARD/blob/master/Software/Test06_HDMI_OUT.zip
If I got the data clock, h-sync, v-sync of the panel, I'll upload the data.
BR, Sanada
SanadaShinken commented
Dear Sir:
after update litex to latest version, which add video terminal and video framebuffer, the video terminal output is successfully show out the linux booting message. the LiteX project is a very wonderful project!
BR, Sanada