Comment #6 on issue 154 by robhamerling: USB RAM locations (BDT & Data)
http://code.google.com/p/jallib/issues/detail?id=154
With revision 2548 the device files of PICs with USB module (currently 42
chips) contain:
const word USB_BDT_ADDRESS = 0x....
with the location of the Buffer Descriptor Table.
The actual location itself for each of these PICs is contained in the file
devicespecific.json (in the tools directory), specified with keyword USBBDT.
When a device file does not contain this constant:
- this PIC doesn't have a USB module
- this PIC is not supportted (yet) by the USB libraries
- it may have been forgotten to add it to devicespecific.json
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