Objective Development Forums

If anybody else is wondering you can use usbDeviceAddress, I believe it is a global variable; if it's "0" it means the device was not enumerated. If it's different than "0" it means it was. Alternatively, people have been using usbSofCount to monitor the host-device link, but to ...

Is there a way to confirm correct enumeration? This way we can trigger a "disconnect" and "reconnect" to attempt enumeration again. Or what about a way to tell if the device was de-enumerated?

My main routine is not clogged at all, it's basically scanning the keypad matrix and sending the keypress data to the host, and that's it. I just thought it would be more elegant to guarantee a constant usbPoll() every x milliseconds if I did it with a timer interrupt. By the way, since you have ton...

Adafruit has an example of a USB HID Keyboard using their Trinket and Pro Trinket (both Arduino compatible) using V-USB. You should check it out, and yes it compiles with Arduino IDE.

https://learn.adafruit.com/pro-trinket- ... d/examples

Thanks for the reply. I've been reading the example project's code and nobody does it like that, everybody is simply polling in the for() loop. Might as well use a proven method. In my mind guarantying a 5ms usbPoll() cycle would provide more stability to the system.

I've been working on making a USB Keypad for a project I'm doing, and so far it is working fine. I decided to utilize timer1 to create a timer interrupt (overflow type) that triggers every 5ms. I use the interrupt to run the usbPoll() function for my keypad. Is this a bad idea? Is it just better to ...