Yeah if there's a reset controller that does "USB-C 3A or not 3A", that'd be ideal. It's not much circuitry, but just enough to be annoying to do by hand.
That plus a current limiter on the controller power rail, you'd have a system that draws ~0 until the reset controller is happy, then CPU/FPGA boot up, and at some point one of them brings the current limiter out of shutdown to bring up the ports as well, and voila
Dave Anderson /
npub1mt…xwant
2024-08-10 20:58:48
in reply to nevent1q…qwm7
Author Public Key
npub1mtg38agwglttl7melxnfqphlm95uymnrdedw62h9j7cyquynza0szxwantPublished at
2024-08-10 20:58:48Event JSON
{
"id": "5a4aaffe418b2d8c96d014d7fd2f5fb83ea5816785466c65406f9cf256eb8f01",
"pubkey": "dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f",
"created_at": 1723323528,
"kind": 1,
"tags": [
[
"e",
"e85e364b0969d4141147df3fe039861d213a71d8b7104f5a40974f189c82d562",
"",
"root",
"04f8915424c713657ad6ce59443d28dbdcf5832687c9af560ae388f59276a137"
],
[
"proxy",
"https://hachyderm.io/@danderson/112939730740876570",
"web"
],
[
"p",
"dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f"
],
[
"p",
"04f8915424c713657ad6ce59443d28dbdcf5832687c9af560ae388f59276a137"
],
[
"e",
"8449cda3995f2c6d9d61a268bcdcfe9e342dfb77f62ccdf198a521475c63431b",
"",
"reply",
"04f8915424c713657ad6ce59443d28dbdcf5832687c9af560ae388f59276a137"
],
[
"proxy",
"https://hachyderm.io/users/danderson/statuses/112939730740876570",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://hachyderm.io/users/danderson/statuses/112939730740876570",
"pink.momostr"
],
[
"-"
]
],
"content": "Yeah if there's a reset controller that does \"USB-C 3A or not 3A\", that'd be ideal. It's not much circuitry, but just enough to be annoying to do by hand.\n\nThat plus a current limiter on the controller power rail, you'd have a system that draws ~0 until the reset controller is happy, then CPU/FPGA boot up, and at some point one of them brings the current limiter out of shutdown to bring up the ports as well, and voila",
"sig": "3716441c3925b01d95ed3af671b9c5fdac8d42bbe86db8a7e43da1b60a56e466ca0f8e2d60b12f6f9d43cc9cd954f91a5f5edf0c4ed4397fdef0700505035957"
}