Free42x - HP-IL extensions to Free42

[Vincent Weber]

(11-04-2016 06:26 PM)jch Wrote:  

(11-04-2016 03:19 PM)Vincent Weber Wrote:  I have tested this on my local wifi network between my Android phone and Virtual Hp-il / ilPer on my PC. I put it in TCP/IP mode, closed the loop by putting each other's ip adress in the config, and I also reversed the ports numbers in/out (60000 and 60001). I can see a frame, then IlPer says the connection failed. Did I miss something ?

Ok, so one half of the communication is Ok !
And for the returning path, please double check IP address & outgoing port in Ilper and ingoing port in Free42x.
Can you ping the phone's IP ?
Any firewall popup on the PC ? You can try to disable it.

(11-04-2016 03:19 PM)Vincent Weber Wrote:  Can this work over wifi ? I read somewhere that wifi was very bad to transport hp-il protocol, too much latency or something like that. Would it be better with 4G?

I run it over Wifi at home and didn't met any latency issues (some in Bluetooth, hence the loop latency combo).
I didn't try in 4G, need port forwarding and stable IPs on both sides...

Cheers. Jean-Christophe.

Many thanks.
I have disabled the firewall on Windows but still get the same problem. It seems that it is actually the PC than cannot succesfully connect to the Android phone, altough it can ping its IP without problems. Is there a defaut firewall on Android 6.0.1 that would prevent the connection ? How to turn it off ?

Another question: you wrote that PRLCD command does not work well because commands are translated into 82162a commands, and the 821262a line spacing does not allow smooth graphics. But I read somewhere else in the forum that the 82162a allowed to control line spacing and possibily reduce it to zero, and that was an advantage over the previous 82143a printer. So who is right ? Any possible confusion with the 82240 printer than came next ?

Thanks a lot and regards,

Vincent