How to output video signal from TVE permanetly

[daisukekitsunai]

Hello

I am developing a program for Linux that runs on a custam board based on mx53 QSB.

This program is a program that outputs video that captured from the camera from the TVE to TV.

And now, this program is almost finished.

However, there is a problem with the TVE.

Signal output is cut off after 10 minutes the program is running.

To cope with the problem, I'm running the following command in the program.

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system (""echo 0> / sys/class/graphics/fb0/blank"");

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when Program runs the this command, signal is output again from TVE.

but,  the following error will occur on the console.

-------------------------------------------------------------------

mxc_ipu mxc_ipu: Channel already disabled 9
mxc_ipu mxc_ipu: Channel already uninitialized 9
mxc_ipu mxc_ipu: IPU Error - IPU_INT_STAT_10 = 0x00100000
mxc_ipu mxc_ipu: IPU Error - IPU_INT_STAT_5 = 0x08800000

--------------------------------------------------------------------

furthermore, this way occur time that signal is not output from TVE.

I want to output signal from TVE permanently.

Could you tell me the advice, or a good way?

[jimmychan · Accepted solution]

There is a solution in Known Issue in the BSP Release Note.

" Display automatic blank functionality is enabled by default. To disable LCD automatic blank functionality, enter the command: echo -e "\033[9;0]" > /dev/tty0 "

But I don't know what is the /dev/tty? for TVE. Please have a try.