Hi everyone here
I signed in here because I guess it's the place for my question. First of all I must tell I'm not a coder.
Well here is the answer I search : is it possible that exists some Ethernet wire module that would detect the WoL magic-packet to itself and translate it to a pulse logical level ?
The module will never need to send data, and never receive data but magic-packets.
Ideally, the little thing would be low power, would run with 3V3 or 5V, would have an eeprom to change/store its MAC address and keep WoL-enabled setting on power loss. I would have to add few discrete components around (like a 555 and 1 or 2 transistors to interface with the device I want to drive).
The main idea is to save energy.
To keep power as low as possible the module would work without being driven by an intelligent device (~100mA would be the very upper limit, 50 would be ... better ;-), 10 or lower cool).
The functionning cycle is as follow:
My device goes OFF on it's own->Eth WoL module goes ON thanks to some MOSFET. Incoming magic packet output pulse fires the device ON and triggers after a short sub-second time the power supply to the Eth module to be OFF ... an so on.
I'd also have to learn programming if needed, at least to set MAC & WoL.
I reached my goal with a old PC NIC card with a 82558B chip and a WoL header, unfortunately this beast eats 2.5W which is roughly the power of the device I want to control, the duty cycle of the device being once 1/4h~1/2h a day or even 0.
Thank you for hints, even with a µC if it's own power is neglectible beside the Eth module.
