MiSTer FPGA Forum

Posted: **Thu Jun 04, 2020 5:44 pm**

Hi, does MiSTer have some kind of state eventing system on the linux side.

My problem. I am working on a raspberry pi touch screen solution for various different system keyboards.
The main problem I face atm is. If I switch for instance from C64 to AtariXL how can I notify my external keyboard that such a switch has happened.
The switch side itself is easy probably the easiest is simply to send a network udp message or something similar which notifies the keygboard that the system was switched to Atari XL.
However I have now clue if there is some kind of hook where I can hook a shell script in so that some external conditions can be adjusted according to the state MiSTer is about to enter.

Posted: **Thu Jun 04, 2020 6:55 pm**

You could write a little "daemon" on MiSTer side that checks for changes inside /tmp/CORENAME (this file holds the name of the current loaded core).

Posted: **Fri Jun 05, 2020 5:16 pm**

thx... I will check this out.

Posted: **Mon Jan 11, 2021 7:16 am**

Hi,

bootsector wrote: ↑Thu Jun 04, 2020 6:55 pm You could write a little "daemon" on MiSTer side that checks for changes inside /tmp/CORENAME (this file holds the name of the current loaded core).

if I run a simple tail -f /tmp/CORENAME i get the following output

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/root# tail -f /tmp/CORENAME
MENUtail: /tmp/CORENAME: file truncated
ATARI2600tail: /tmp/CORENAME: file truncated
ATARI2600tail: /tmp/CORENAME: file truncated
ATARI5200tail: /tmp/CORENAME: file truncated
ATARI5200

If I run tail -f /tmp/CORENAME 2> /dev/null I get this shown

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/root# tail -f /tmp/CORENAME 2> /dev/null
ATARI2600ATARI5200ATARI5200NESNES

Any chance to get rid of "file truncate" and the doubled core name using console commands?
I like to send the output to an Arduino.

Thx

Posted: **Wed Jan 13, 2021 7:20 am**

I figured it out using

Code: Select all

while true do 
  newcore=$(cat /tmp/CORENAME)
  sleep 2
done

Posted: **Wed Jan 13, 2021 2:41 pm**

werpu wrote: ↑Thu Jun 04, 2020 5:44 pm I am working on a raspberry pi touch screen solution for various different system keyboards.

This sounds super interesting! Good luck and hope you can share details about it

MiSTer FPGA Forum

notification on core change?

notification on core change?

Re: notification on core change?

Re: notification on core change?

Re: notification on core change?

Re: notification on core change?

Re: notification on core change?