Hi all
I have been looking for any example for how to use USB - for the PIC16F1454/5/9 USB example - even just transferring a single byte.
Can anyone point me to an example:
1) example of pic code/usb functionality 2) USB driver for PS (some ini file), what to put there and how to use itI am used to communicating to com port (usb act the same way), but the driver thing is new to me
wbr sonnich
On a sunny day (Fri, 23 Oct 2015 12:07:51 -0700 (PDT)) it happened Sonnich Jensen wrote in :
I circumvent that problem by using serial to USB modules, and just use RS232. That also takes care of USB licensing:
Now any terminal program can work with it, and you have 5V power for your PIC too, as well as 3.3V. And a cheapr PIC (no USB).
For 99 cents....
Best bet is to download the Microchip Library of Applications (MLA) and find the help_mla_usb.pdf file to read about the USB framework and functions. There are demos for CDC and USB-Serial applications, designed for their low pin count USB demo board which has the PIC18F14K50 but can be used with the PIC16F145x. The board is $40 but has only a few parts so you could easily make your own:
Data Sheet with schematic:
I have implemented USB on my own ORTM-4H product, using the PIC18F2550, but I had to use the older USB stack and the C18 compiler (and perhaps also the
8.9x IDE). You may download what I have - which includes some changes to the stack that appear to work - but it's not completely debugged, and the newer stack probably takes care of these issues that I had with XC8 a few years ago:There is also a lot of information on the Microchip forum where I (and others) discussed the problems.
Paul
Maybe this will help?
It's supposed to be a software-only implementation of USB.
You may also look around the web for 'Igor ?e?ko' who apparently inspired people to write these software-only implementations and perhaps 'V-USB' whose homesite has a page full of links. One of those links is the above code.google.com one.
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