Eagle freezes if run from ulp to generate gerber files

Question

I have a ULP to automate generation of gerberfiles. In the ULP I use the following command: system("\"" + EagleExe + "\" -X -x0.0 -y0.0 -O+ -c- -dGERBER_RS274X -o\"" + GerberFileName + "\" \"" + B.name + "\" tPlace tNames"); This usually works fine but in some cases it just freezes and nothing happens. If I run the CAM processor manually i get the following warning: Fullscreen contentimage_31710.html Download Jive SBS Error
An general error occurred while processing your request. The ULP probably freezes because of this warning, but the warning is not shown. Eagle is probably waiting for me to answer the non visible dialog. Is there some "silent mode" without warnings or some other way to sole this problem?

dukepro · Accepted Answer

Not sure why, but Eagle is waiting for input from the stdin. Even if stdin is not a tty, it sits there and waits. I managed to fix this by echoing an "n" to stdin. It's been working consistently ever since. Even if it never eats the character, there's one ready to be read. Here's a few lines I use to generate a complete set of gerber files: echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-TopCopper.gbr 516800.brd 1 17 18 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-BotCopper.gbr 516800.brd 16 17 18 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-NonPTHoles.gbr 516800.brd 20 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-TopSilkScreen.gbr 516800.brd 21 25 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-BotSilkScreen.gbr 516800.brd 22 26 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-TopMask.gbr 516800.brd 29 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-BotMask.gbr 516800.brd 30 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-TopPaste.gbr 516800.brd 31 || exit 1 echo n | eagle -X -N- -f+ -O+ -c- -x0 -y0 -dGERBER_RS274X -o 516800-RevA-BotPaste.gbr 516800.brd 32 || exit 1 echo n | eagle -X -f+ -N- -O+ -c- -x0 -y0 -E+0.1 -R 516800-RevA.drl -dEXCELLON -o 516800-RevA-ExcellonDrill.exc 516800.brd 44 45 || exit 1 HTH, - Chuck On 02/17/2014 06:02 AM, Magnus H-C wrote: I have a ULP to automate generation of gerberfiles. In the ULP I use the following command: system("\"" + EagleExe + "\" -X -x0.0 -y0.0 -O+ -c- -dGERBER_RS274X -o\"" + GerberFileName + "\" \"" + B.name + "\" tPlace tNames"); This usually works fine but in some cases it just freezes and nothing happens. If I run the CAM processor manually i get the following warning: The ULP probably freezes because of this warning, but the warning is not shown. Eagle is probably waiting for me to answer the non visible dialog. Is there some "silent mode" without warnings or some other way to sole this problem? -- To view any images and attachments in this post, visit: http://www.element14.com/community/message/104018