Hi guys, 2011/7/30 Rob Hamerling <[email protected]>
> > Although your blink sample is working, isn't it desirable to have less >> hardware? Maybe internal OSC is better? >> > > Well, the main purposes of these 'usb-blink' samples was to provide a model > of how to setup a PIC with USB, in particular the oscillator. I think a > serious USB device needs a crystal or resonator. Do you think most users > would use the internal oscillator? > >From what I could read in 18f27J53 datasheet, some PICs can handle USB peripheral without external Xtal (18f27j53 can), but only at low speed, not full speed, and other just can't (18f4550 can't for instance). I'd suggest to give configuration for USB full speed, always with Xtal. At least this should a working configuration, from which user can validate hardware, *then* "downgrade" to low speed without Xtal if wanted. Cheers, Seb -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
