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PINGUINO32-DIY
17-05-2012, 11:20 PM,
#15
RE: PINGUINO32-DIY
(17-05-2012, 10:42 PM)jpmandon Wrote: Connect CLKO with CLKI :-) I apologize, I didn't test this solution.
It should work without connecting this 2 pins, but I tried a lot of config bit and nothing works.

Microchip is clear in the datasheet, and you can also easily see in oscillator diagram that to clock USB you can only do by External Clock.

For the internal oscillator exist only a way to give 8MHz directly to USB, but USB to work you need 48MHz, microchip says that this intOSC 8MHz to USB are only to detect USB activity.

Quote:6.3.4
USB Clock (USBCLK) Generation
The USBCLK can be derived from the 8 MHz internal FRC Oscillator, 48 MHz POSC, or the
96 MHz PLL from the POSC. For normal operation, the USB module requires exact 48 MHz
clock. When using 96 MHz PLL, the output is internally divided to obtain 48 MHz clock. The
FRC clock source is used to detect USB activity and bring USB module out of Suspend mode.
Once USB module is out of Suspend mode, it must use a 48 MHz clock to perform the USB
transactions. The internal FRC Oscillator is not used for normal USB module operation.

Also note that internal oscillator accuracy don't comply with USB Full Speed Specification, so my trick can be used only for fun, not to serious jobs Wink

(17-05-2012, 10:42 PM)jpmandon Wrote: Of course, the bootloader is open ( as everything in Pinguino ), it"s just a modified version of the Microchip HID bootloader ( the old one not the AN1388 I never made work ).

By the VID and PID I know that is based on microchip HID bootloader, I played with it several times.

Good to know that is all open, the problem is that I can't find a location to download the code Undecided I must be looking in the wrong places.
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Messages In This Thread
PINGUINO32-DIY - by jpmandon - 12-05-2012, 12:26 PM
RE: PINGUINO32-DIY - by PaX - 12-05-2012, 04:51 PM
RE: PINGUINO32-DIY - by jpmandon - 12-05-2012, 07:40 PM
RE: PINGUINO32-DIY - by Gavinmc42 - 14-05-2012, 09:29 AM
RE: PINGUINO32-DIY - by jpmandon - 14-05-2012, 03:26 PM
RE: PINGUINO32-DIY - by jpmandon - 14-05-2012, 04:15 PM
RE: PINGUINO32-DIY - by Gavinmc42 - 15-05-2012, 03:24 AM
RE: PINGUINO32-DIY - by jpmandon - 15-05-2012, 06:46 PM
RE: PINGUINO32-DIY - by jpmandon - 16-05-2012, 09:39 PM
RE: PINGUINO32-DIY - by bjoernp - 17-05-2012, 03:44 PM
RE: PINGUINO32-DIY - by psmll1 - 17-05-2012, 07:20 PM
RE: PINGUINO32-DIY - by jpmandon - 17-05-2012, 09:35 PM
RE: PINGUINO32-DIY - by psmll1 - 17-05-2012, 10:06 PM
RE: PINGUINO32-DIY - by jpmandon - 17-05-2012, 10:42 PM
RE: PINGUINO32-DIY - by psmll1 - 17-05-2012, 11:20 PM
RE: PINGUINO32-DIY - by jpmandon - 18-05-2012, 02:43 PM
RE: PINGUINO32-DIY - by psmll1 - 18-05-2012, 03:21 PM
RE: PINGUINO32-DIY - by ober - 01-06-2012, 02:34 PM
RE: PINGUINO32-DIY - by Alfonso82 - 09-08-2012, 05:17 AM
RE: PINGUINO32-DIY - by dtyree77 - 09-08-2012, 05:56 PM
RE: PINGUINO32-DIY - by Alfonso82 - 10-08-2012, 02:42 AM
RE: PINGUINO32-DIY - by jpmandon - 11-08-2012, 09:45 AM
RE: PINGUINO32-DIY - by Alfonso82 - 11-08-2012, 11:47 AM
RE: PINGUINO32-DIY - by Alfonso82 - 18-08-2012, 01:32 AM
RE: PINGUINO32-DIY - by pingotg - 18-08-2012, 11:38 AM
RE: PINGUINO32-DIY - by Alfonso82 - 19-08-2012, 01:08 AM
RE: PINGUINO32-DIY - by pingotg - 20-08-2012, 10:00 AM
RE: PINGUINO32-DIY - by Alfonso82 - 01-09-2012, 04:35 AM
RE: PINGUINO32-DIY - by jpmandon - 01-09-2012, 05:26 PM
RE: PINGUINO32-DIY - by Alfonso82 - 03-09-2012, 01:53 AM

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