Werner Almesberger schrieb: > Andy Green wrote: >> Well I didn't hear the answer to this 100mA default issue yet. Maybe we >> can find a pin that is active on the FTDI chip when it has a 500mA >> descriptor enabled. > > If we include an EEPROM, we can program it to request 500mA. I don't > know what the default is. > >> | It doesn't have to. All we need is some ADC that can probe what's going >> | on there. >> >> Probe what exactly? > > Charger presence, i.e., the ID pin. I don't think there's a safe way to > also test whether D+/D- are shorted. (I.e., if the MPU or whatever does > this test is connected to D+/D-, it could block access to the FT2232, > and thus de facto brick the system.)
And here we are again, power over USB is just a pain in the a... In the end, we probably are better off with a second fullfeatured USB connector. /jOERG _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
