I am interested and would like to join you

[fschuett]

Hi,
I am a school teacher and we have some smart boards at school. Some 600, some 800.
I verified your protocol findings on 800 boards.

I think the length byte is more simple. The second digit just counts the data bytes and the
first one is the xor of the data byte count.
0xe1: 1 data byte
0xd2: 2 data bytes
0xc3: 3 data bytes

I could upload a SmartService800.log file.

[Mis012]

I last worked on this a while back, I made this
https://gitlab.com/Mis012/openSMART/blob/master/uhid-smart.c
but there was a weird bug, I wanted to live debug it but never got around to it.
If you have gdb, you can look at what it's doing - probably not what it should be doing :)

[Mis012]

if(buf[0] == 0x02) { //report ID 2 is what we're after
		switch(buf[1]) {
			case 0xd2:
				if (buf[2] == 0x05) {
					tools_changed(uhid_fd, smartboard_fd, buf[3]);
				}
				break;
		}
	}

if I remember the symptoms correctly, I guess tools_changed was being called all the time, even though there was no change

[fschuett]

Am Sonntag, 16. September 2018, 17:40:57 CEST schrieb Mis012:

I last worked on this a while back, I made this https://gitlab.com/Mis012/openSMART/blob/master/uhid-smart.c but there was a weird bug, I wanted to live debug it but never got around to it. If you have gdb, you can look at what it's doing - probably not what it should be doing :)

Hi, thank you for the source. I have gdb and will try to debug it. Bye, Frank

[Mis012]

good luck :)

[fschuett]

Am Sonntag, 16. September 2018, 17:55:00 CEST schrieb Mis012:

good luck :)

Thanks, may be this error is no error. I think the board sends the tool message all the time and the application has to keep track of the current status. Thank your for all your work you have done. I will get back to you as soon as I could test. Bye, Frank

[Mis012]

I think the board sends the tool message all the time

if that's the case, I commited a possible fix

[fschuett]

Hi,
now I did test. The board needs to send a key release message right after the key press message.
Everything else works perfectly fine.
Bye the way, you announced that you moved to gitlab, so I forked your repo there
and did my changes over there.
If it's ok to you we can move our communication completely to gitlab.
Right now I try to modify your program to make it work with newer 800 smartboards.
I will test it on Monday.