Error launching rom via python script/command line

sekazi

I am running a kit that launches roms via a NFC tag. in the code it appears to be correct. When I try to run the exact line manually though the command prompt I get the same error so there must be something different for me. I know someone else who is having the same problem too.

The line in the py script is
subprocess.call("sudo openvt -c 1 -s -f " + emulatorpath + rompath + "&", shell=True)

If I try to run the exact string in a command I get an error. The command I run is
sudo openvt -c 1 -s -f -v "/opt/retropie/supplementary/runcommand/runcommand.sh 0 SYS nes /home/pi/RetroPie/roms/nes/mario.nes"

I am running the NES emulator with a mario.nes rom. The message I get is
openvt: Using VT /dev/tty1
openvt: exec: No such file or directory

Then the raspberry pi proceeds to launch emulationstation.

Now if I try to use just the following
sudo /opt/retropie/supplementary/runcommand/runcommand.sh 0 SYS nes /home/pi/RetroPie/roms/nes/mario.nes

This works fine from command line but when running the python script it never shows the rom. The whole problem seems to be around openvt which I cannot find anything online about. I do not know enough about linux or scripting to figure this out.

sekazi

I still have had no luck figuring this out. I have no clue why emulationstation just restarts using openvt when the command is correct for launching a rom.

meleu

@sekazi said in Error launching rom via python script/command line:

The whole problem seems to be around openvt which I cannot find anything online about. I do not know enough about linux or scripting to figure this out.

When you say online you mean "on the web", right? The information you need is really close to you, no need to search on the web. Prepare to get a life changing information about Linux... drums rolling

Man pages! If you type man comand you get the manual of the command. I think you wanna take a look at the openvt man page. So type man openvt and you'll be amazed. To exit the man page press 'q'.

But here are some answers about the errors:

openvt: exec: No such file or directory

You are trying to execute /opt/retropie/supplementary/runcommand/runcommand.sh 0 SYS nes /home/pi/RetroPie/roms/nes/mario.nes, and there's no file with this name. You want to execute the file /opt/retropie/supplementary/runcommand/runcommand.sh and then give some arguments to it. I'll let let you find the solution, but it's releated with the "quotes". :-)

I have no clue why emulationstation just restarts using openvt when the command is correct for launching a rom.

Well, you saw above that the command isn't correct, right? But the emulationstation thing is because retropie is configured to start emulationstation in tty1 (look at your /etc/profile.d/10-retropie.sh) and your openvt command is forcing the use of tty1 (-c 1). The openvt fails to execute the command you give to it, but it starts the terminal with success.

sekazi

Thanks for the help. That did solve it for running it myself but the python script still failed. I get

/opt/retropie/configs/all/autostart.sh: line 1: 3353 Terminated emulationstation
tput: unknown terminal "unknown"
'unknown': I need something more specific.
Error opening terminal: unknown.
Traceback (most recent call last):
File "/opt/retropie/supplementary/runcommand/joy2key.py", line 42, in <module>
curses.setupterm()
_curses.error: setupterm: could not find terminal

Then emulationstation proceeds to launch again.

In the end I got everything working by going back to RetroPie v4.0.2. I really do not care about having the latest version for this one as it is more of a novelty item than anything since I can launch games with cartridges.