On Fri, Sep 12, 2014 at 5:59 PM, Michael Mrozek mrozek@openpandora.org wrote:
Am Fri, 12 Sep 2014 16:58:06 +0300 hat Grazvydas Ignotas notasas@gmail.com geschrieben:
Hi,
Later it was found that overcurrent protection doesn't actually work. I'm not sure if it was ever fixed..
I think so, the Rebirth Pandora had extra protection stuff added to the USB port. With CC Pandoras, you could even get a small electrical shock from the USB Port (and fry the Port with that), but that doesn't happen anymore on the later Pandoras.
I really hope it will all work properly this time..
We need to check that upfront, now we know what to look for, which helps.
• FTDI232 (Linux console)
responds on the USB side.
Again, I hope it doesn't waste power..
It shouldn't. At least on the EVM it gets it's power from the PC. As soon as you connect it to your PC (without connecting the EVM to any power source), the small LED lights up on the EVM and the PC finds the USB to Serial adaptor.
That LED doesn't guarantee that there is no leakage current of some sorts going from OMAP to the chip while the chip is unpowered from the USB side (which will be most common state).