Hardware Hacking (Adding new features)

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Hello everyone,

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I'm interested in modifying a TP-Link WiFi extender to add new functionality. As a starting point, I'd like the power LED on the device to blink three times whenever a new device connects to the extender.

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I have already successfully extracted the firmware from the device. Now, I'm considering the following approaches:

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  1. Should I write a kernel driver?

  2. Should I reverse engineer the existing code to identify the function that's triggered when a new device connects, and then modify it to control the GPIO for blinking the LED?

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I'd appreciate any guidance on the best approach and the necessary steps to achieve this.

Thank you!

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submitted by /u/nyyirs
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from hacking: security in practice https://ift.tt/PYkdvCq

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