| Jookia1 | mntmn: single-use microcontrollers really make me a little miffed for some reason. i want to run code everywheree | 00:39 |
|---|---|---|
| mntmn | googles “miffed” | 00:53 |
| erlehmann | rustled jimmies? | 00:54 |
| mntmn | Jookia1: what do you mean? you _can_ run your code on the LPC | 00:54 |
| Jookia1 | mntmn: isn't it an undocumented microcontroller? | 00:55 |
| mntmn | Jookia1: ah sorry we’re talking about different things probably | 00:58 |
| Jookia1 | or maybe not and i'm just without coffee | 00:58 |
| Jookia1 | awesome work so far | 00:58 |
| mntmn | Jookia1: ah you mean the DDR PHY MCU | 00:59 |
| Jookia1 | Yeah | 01:00 |
| adjtm | Jookia1, running proprietary firmware, single-use is better than always-on | 01:08 |
| Jookia1 | adjtm: definitely | 01:16 |
| mntmn | it’s a really funny design to have a complete ARC cpu with vendor extensions only to run one thing once | 01:18 |
| mntmn | of course it can be hacked to do other calculations, but i don’t even know its clock rate for example | 01:18 |
| mntmn | you have complete access to its code+memory from the ARM side and can reset/halt it via a register | 01:19 |
| mntmn | and we have another one of these in the HDMI block, which is Xtensa. probably not trivial to run custom code in it though because the fw for it is signed | 01:20 |
| mntmn | (it’s yet unknown whether the signature is actually checked) | 01:20 |
| mntmn | so with Hantro and the Vivante GPU there are at least 5 ISAs in this chip | 01:21 |
| mntmn | plus cortex-m4f | 01:23 |
| Jookia1 | the cortex m4 seems like fun to play with | 01:54 |
| Jookia1 | i think its intended for low-power though | 01:54 |
| Jookia1 | maybe you could use it to monitor power buttons or something | 01:54 |
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