On Tue, Aug 11, 2020 at 11:37:41AM +0100, Luke Kenneth Casson Leighton wrote: > On Tuesday, August 11, 2020, Pablo Rath <[email protected]> wrote: > > > On Sun, Jul 26, 2020 at 10:29:07PM +0100, Luke Kenneth Casson Leighton > > wrote: > > > On Sunday, July 26, 2020, Pablo Rath <[email protected]> wrote: > > > > > > > > > > > > > > I have a power supply from a Huawei Tablet (Output 5V, 2A) and one from > > > > an old Ipad Mini (Output 5V, 1A) both with a wall plug and a female USB > > > > socket. > > > > > > > > > ok you need... a male to male cable. > > > > > > > > > > Can I use one of them with a standard USB 2.0 USB A to USB A (male to > > > > male) cable? > > > > > > > > > yes that's the one. usually used on laptop fan bases. > > > > > > > Bought and tried the cable but I have no working UART. > > So far I have tried both USB-ports on the Micro Desktop, powering with > > the USB-port of my laptop and with the power supply (Output 5V, 2A). > > I think that the cable is working because it is new and it can load my > > smartphone (with an additional USB-OTG female USB to Micro USB adapter). > > Is there anything else I can try? > > It is frustrating. Without UART connection I don't know if anything > > happens at all when connecting the USB cable to the Micro Desktop. > > > does the USB UART happen to be one which has flashing LEDs on it? > No. There are no LEDs on it.
> there is another way to power the Card: *carefully* plug in a USB-OTG cable. > > however the SY6280 should prevent power getting back through to the Housing. > > it will however not prevent the 3.3v Tx and Rx of the UART from lighting up. > > if the SY6280 was damaged at the time then it will not be letting power > through to the Card. > > therefore powering via USB-OTG will bypass that. Ok. I have tried that now. Pressed "2" while applying power over USB-OTG but an Allwinner USB FEL device is not found with 'sunxi-fel version'. Also tried to boot with my known working µSD-Card but there is no output on UART. Pablo _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
