keyup/keydown with usb library

Scadi · Joined: 29 Apr 2011 Posts: 8

Hi,
I bought the USB Library and the hid_keyboard-162.bas works fine.
However, I have a problem with a program that some key codes sometimes do not recognize.
Only when the key code repeatedly sends, it is detected. With PS/2 I have the same problem that I can deal with a short break between make and break.
My guess is now the USB Library keydown / keyub quickly fired.
Is there a way keydown and send keyub separately? This would clearly be useful because some programs (including Windows) expect a first pressed key (eg alt + tab or ctrl + tab). Other programs expect e.g. a pressed key in combination with a mouse click, etc.

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

You mean an external program you run, does not recognize the keys sent ?
The group of 8 bytes sent are 1 keypress.
When the first one uses a modifier like HID_MODIFIER_LEFT_CTRL
you can then send a group with also CTRL and later you use NONE when CTRL is supposed to be released.

Const HID_MODIFIER_NONE=0
Const HID_MODIFIER_LEFT_CTRL=1
Const HID_MODIFIER_LEFT_SHIFT=2
Const HID_MODIFIER_LEFT_ALT=4
Const HID_MODIFIER_LEFT_GUI=8
Const HID_MODIFIER_RIGHT_CTRL=&H10
Const HID_MODIFIER_RIGHT_SHIFT=&H20
Const HID_MODIFIER_RIGHT_ALT=&H40
Const HID_MODIFIER_RIGHT_GUI=&H80

Scadi · Joined: 29 Apr 2011 Posts: 8

Hi,
my problem is not alt/shift/ctrl special each character.
If I for example a "3" send, then it is not always recognized. Only when I have the "3" 5-10 times they send is detected (but also several times).
Is it possible to make next?
keydown "3"
Waitms 50
keyup "3"

radan · Joined: 06 Jan 2007 Posts: 35

http://bascom.at.ua/publ/atomnaja_klaviatura_vinduksoida_hid_usb/1-1-0-54

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

each key you sent, must be detected.
try it with notepad to see if you get all keys.
Keys sent with usb can not get lost.

The usb keyboard does not work with make/break.
If you keep a key pressed in PS2, you get repeated keys.

You first need to find out if the problem is that sending key data does not work(by sending them to notepad)
Or that the app you try to send it to, does not respond to them.

Did you try to send
instead of :
Uedatx = Usb_key ' Byte2: Keycode 0
Uedatx = 0 ' Byte2: Keycode 1

This :
Uedatx = Usb_key ' Byte2: Keycode 0
Uedatx = Usb_key ' Byte2: Keycode 1

Scadi · Joined: 29 Apr 2011 Posts: 8

I managed it;-)

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

That should be possible by adding an endpoint.
I do not know if the keyboard can receive data from PC. I think so because of the leds so simplest would be to add a keyboard out endpoint.

Otherwise, it will be more complex : you create 2 devices then for example keyboard and generic hid. but this will require 2 reports too.