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Difference: PortalPlayerUsb (r23 vs. r22)
USB support for PortalPlayer PP502x based DAPs
USB support is enabled as of r20105.
logf() over usb serial seems to work well at full speed, not so well at high speed (but full speed should be sufficient for this)
To enable this, edit firmware/export/usb_core.h firmware/export/config.h and change the following:
You should then get a "logf over usb" in the debug menu. Use this to enable or disable the logf sending, while not connected. Results of changing this while connected are undefined.
To use this from linux, run "modprobe usbserial vendor=0x0781 product=0x7450" (for a sansa c200, change vendor and product id as appropriate, see lsusb output for yours). You should then get a /dev/ttyUSB* device when plugging in. You can then use this e.g. with "cu -l /dev/ttyUSB0", or any other serial communications program of your choice (i.e. minicom)
The usb serial implementation doesn't seem complete enough to be usable from Windows. Support under Mac OSX is unknown.
The USB module resembles the one in FreeScale's i.MX31
r23 - 20 Jun 2009 - 18:08:47 - RobertKeevilRevision r23 - 20 Jun 2009 - 18:08 - RobertKeevil
Revision r22 - 11 Jun 2009 - 15:13 - NicolasPennequin
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