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Problem with #int_rda and usb enumeration

 
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albert-dm



Joined: 25 Jan 2013
Posts: 2

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Problem with #int_rda and usb enumeration
PostPosted: Fri Jan 25, 2013 6:16 am     Reply with quote

I need to use the RDA interrupt in my firmware, but when I call it with #int_rda, I have problems when the device trys to enumerate with the SO using USB HID. I'm using Windows 7. What should I do?
temtronic



Joined: 01 Jul 2010
Posts: 9188
Location: Greensville,Ontario

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PostPosted: Fri Jan 25, 2013 6:38 am     Reply with quote

for starters...give us more information !

Which PIC ? Compiler version ? etc.
USB ??? Internal to the PIC or an interface module ?(TTL or RS232)??

PC side problems...is it a dedicated PC ONLY interfacing to PIC project or does it also connect to the net,do spredsheets,games,etc.?
The PC program..is it just a terminal program or something you made(VB,VC,DELPHI,QB,??)??

Have you run the example programs (both CD and HID) that CCS supplies?
I know the CDC version runs great on XPP,others will comment for 7.

Use the [code] tag to show us a very small,compilable program that show the problem.

The more information and code you supply ,the more people will be able to help you, faster!

hth
jay
albert-dm



Joined: 25 Jan 2013
Posts: 2

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More information
PostPosted: Fri Jan 25, 2013 6:45 am     Reply with quote

I'm using PIC18f4550
There isn't a software, the pic can't connect to the pc.
My CCS compiler is version 4.1
My device connects to the pc using USB HID. It was working, but now I need to use RDA interrupt and when I declare #int_rda I have problems when the firmware tries to enumerate with the SO. It works perfectly using Windows XP.
Ttelmah



Joined: 11 Mar 2010
Posts: 19401

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Re: More information
PostPosted: Sun Jan 27, 2013 2:52 am     Reply with quote

albert-dm wrote:
I'm using PIC18f4550
There isn't a software, the pic can't connect to the pc.
My CCS compiler is version 4.1
My device connects to the pc using USB HID. It was working, but now I need to use RDA interrupt and when I declare #int_rda I have problems when the firmware tries to enumerate with the SO. It works perfectly using Windows XP.


Of course there is software. The PIC can't work without it...
CCS compiler version numbers are x.xxx, not x.x.
If INT_RDA, is:
1) not reading the serial stream, or
2) Trying to do more than just read one character
It will prevent USB from working. USB _requires_ that it's interrupts are serviced promptly. If you stop this happening, problems.
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