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| xobs | Alright, so after bricking my own Tomu by updating it over a dodgy USB cable, I've decided it's a Bad Idea to allow for in-place upgrades. | 04:54 |
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| xobs | The solution is to have a loader that can overwrite sector 0. | 04:56 |
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| kyaputen | xobs: welcome to the club :) | 11:48 |
| MadHacker | It feels like a missed opportunity that USB can't be switched into a GPIO mode where you can just wiggle the two pins. | 11:59 |
| MadHacker | (Not on tomu, on hosts, so you can use them to fix stuff like this) | 12:00 |
| kyaputen | well, arduinos are cheap nowadays (but I agree that would be nice) | 12:36 |
| kyaputen | maybe the latency wouldn't be good if you're not in kernel space (I don't know) | 12:36 |
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| auscompgeek | I think the problem would be mostly that USB is a bus | 13:13 |
| MadHacker | To be clear, I wasn't suggesting that as a standard mode, just as a feature that'd have been nice to be standardised in the hubs and in UHCI/OHCI/EHCI. | 13:14 |
| auscompgeek | yeah | 13:14 |
| MadHacker | So that it was available as an "in a pinch" feature with broad support for firmware recovery etc. | 13:14 |
| auscompgeek | but it'd mean significantly more complex circuitry I suppose | 13:15 |
| MadHacker | Nah, adding GPIO to something is pretty trivial. Especially since USB isn't properly differential and uses single-ended signals for various things. | 13:15 |
| MadHacker | It'd save a lot of complexity required to implement DFU etc. in hardware on the device side. | 13:15 |
| Kitlith | not to mention it'd be neat to have a few bitbangable gpios exposed from USB ports | 20:25 |
| Kitlith | want to turn on an led from your computer over USB? easy -- just flip a line and have some hardware that protects against overvoltage | 20:26 |
| Kitlith | but that's never going to happen | 20:26 |
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