USB communications

[Alexander]

I'm an newbee with USB communication (at least with microcontrollers).
I want to created a device which can be connected to the PC through USB. The
Microchip 18F2550 seems to be able to do this.
However I cannot find any good documentation on the (external) hardware
requirements for this. Do I just need the external pull-ups (maybe not with
the internal activated) and then connect the D+ and D- to the USB port (some
resistor as descriped in the datasheets for power and detection added if
needed)???

Does anyone have a code example for the microcontroller and/or the PC???

ThanX in Advance

Alexander

 

[NewsGroup]

I'm an newbee with USB communication (at least with microcontrollers).
I want to created a device which can be connected to the PC through USB. The
Microchip 18F2550 seems to be able to do this.
However I cannot find any good documentation on the (external) hardware
requirements for this. Do I just need the external pull-ups (maybe not with
the internal activated) and then connect the D+ and D- to the USB port (some
resistor as descriped in the datasheets for power and detection added if
needed)???

Does anyone have a code example for the microcontroller and/or the PC???

ThanX in Advance

Alexander

I played around with the 16C745 (UV erasable windowed version!!) which
supports USB 1.1 (Mainly because the 17F2550 wasn't in production). I got it
to work as a HID (human interface device) with the PC. There are a few
examples available on the net. Have a search for PICCALC and 16F745. Also,
both circuit cellar and elector have examples. Oh, and microchip.

I may have a play now the 18F version is available - if you manage to get
anything working, I'd be very interested.


HTH

Mike.

 

[Alexander]

Het volgende bericht werd op ons ingehakt door NewsGroup

I played around with the 16C745 (UV erasable windowed version!!)
which supports USB 1.1 (Mainly because the 17F2550 wasn't in
production). I got it to work as a HID (human interface device) with
the PC. There are a few examples available on the net. Have a search
for PICCALC and 16F745. Also, both circuit cellar and elector have
examples. Oh, and microchip.

I may have a play now the 18F version is available - if you manage to
get anything working, I'd be very interested.


HTH

Mike.

I will let you know, but don't expect it to be soon.
It's just an extra to my larger project(s).

 

[martin]

El Mon, 17 Jan 2005 18:55:38 +1000, NewsGroup escribió:

I played around with the 16C745 (UV erasable windowed version!!) which
supports USB 1.1 (Mainly because the 17F2550 wasn't in production). I got it
to work as a HID (human interface device) with the PC. There are a few
examples available on the net. Have a search for PICCALC and 16F745. Also,
both circuit cellar and elector have examples. Oh, and microchip.

I may have a play now the 18F version is available - if you manage to get
anything working, I'd be very interested.


HTH

Mike.

test test