> On 16. Jan 2023, at 20:01, Luke Kenneth Casson Leighton <[email protected]> wrote:
>
> On Mon, Jan 16, 2023 at 6:56 PM Andreas Grapentin <[email protected]>
> wrote:
>
>> In the process of attaching peripheries, I must have blown something on the
>> microdesktop, the power LED no longer lights up, tested multiple chargers.
>> I’m fairly certain that the LED did light up green when I started working on
>> the board today. Is it possible that I blew a fuse somewhere?
>
> yes it should. no there's no fuse. you'll need a multimeter, be *careful*.
> i suggest taking the Card out. if it's really borked you can power it
> with a 5V USB "charger" cable (into the 2 standard USB sockets).
>
> also, check you inserted the Card correctly: not one row along or one
> pin along, and make sure no contact between the two PCBs.
forgot to mention, I’m using the expansion header on the micro desktop for the
UART connection. Power to the EOMA card directly through the microUSB works,
that’s what I’m doing right now. I haven’t tried the USB sockets on the micro
desktop though, that might be worth a shot.
>> I’m confident that this is salvageable, considering that I do get boot
>> loader output through UART. I’ll keep looking into it. If you have any
>> hints, I’d appreciate it.
>
> it's possible to reconfigure u-boot (etc) to have the OS on the Card's
> micro-sd.
I believe I’m using a quite old u-boot boot script. Included below. I’m not too
familiar with u-boot, any tips what needs to be changed to switch the microSD
slot, or maybe include a fallback option to try booting from the internal
microSD if the external one is unavailable?
if test -n ${distro_bootpart}; then setenv bootpart ${distro_bootpart}; else
setenv bootpart 1; fi
part uuid ${devtype} ${devnum}:${bootpart} uuid
setenv bootargs console=${console} root=PARTUUID=${uuid} rw rootwait
if load ${devtype} ${devnum}:${bootpart} ${kernel_addr_r} /boot/zImage; then
if load ${devtype} ${devnum}:${bootpart} ${fdt_addr_r} /boot/dtbs/${fdtfile};
then
if load ${devtype} ${devnum}:${bootpart} ${ramdisk_addr_r}
/boot/initramfs-linux.img; then
bootz ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r};
else
bootz ${kernel_addr_r} - ${fdt_addr_r};
fi;
fi;
fi
_______________________________________________
arm-netbook mailing list [email protected]
Configuration, options, subscribe and unsubscribe at:
http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook
Send large attachments to: [email protected]
