Flashing the AVR through Wifi

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Revision as of 17:46, 1 January 2017 by Danny (talk | contribs)

Wifi flashing through ESP8266

After a long search and many discarded ideas, this hackaday page points to esp-link, an esp8266 firmware dedicated to providing a transparent wifi-serial bridge.

This page lists available esp8266 modules. I've got an esp-01 (and several esp-03s).

The tool esptool is documented here. This page also explains how to connect the gpio pins to get the device into serial programming mode. Notably:

  • GPIO0 to GND to select serial bootloader.
  • GPIO2 to Vcc using a resistor
  • GPIO15 is already pulled low on the module (apparently)

Discarded Ideas

  • bluetooth (HC05) appears too unreliable