Last night I embarked on documenting the GPIO subsystem of the EcoNet EN751221.
> How complicated can it be?
3 different kinds of GPIO subsystems:
* Normal GPIOs (64)
* 16 of which can trigger an interrupt
* Serial GPIOs
* GPIO that are actually on the wifi chip
2 hardware blinkers systems
* First is simple and only supports GPIOs 0-15
* Second allows up to 8 custom blink patterns
* For GPIOs 0-15
* And Serial GPIOS
* And GPIOS 16-31 and 37-51, BUT no custom patterns
So yes, apparently a GPIO system can be quite complicated...
https://econet-linux.pkt.wiki/en/hardware/EN751221/gpio
Caleb James DeLisle /
npub1mh…q233h
2025-03-29 15:07:15
Author Public Key
npub1mh5a6mhm4u78glqxhltq7uexv6kddphycthlguvn0ux8ch72tc8q6q233hSeen on
wss://relay.nostr.bandPublished at
2025-03-29 15:07:15Event JSON
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"content": "Last night I embarked on documenting the GPIO subsystem of the EcoNet EN751221.\n\n\u003e How complicated can it be?\n\n3 different kinds of GPIO subsystems:\n * Normal GPIOs (64)\n * 16 of which can trigger an interrupt\n * Serial GPIOs\n * GPIO that are actually on the wifi chip\n2 hardware blinkers systems\n * First is simple and only supports GPIOs 0-15\n * Second allows up to 8 custom blink patterns\n * For GPIOs 0-15\n * And Serial GPIOS\n * And GPIOS 16-31 and 37-51, BUT no custom patterns\n\nSo yes, apparently a GPIO system can be quite complicated...\n\nhttps://econet-linux.pkt.wiki/en/hardware/EN751221/gpio",
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