Uploading program to arduino wirelessly

[rajibgupta]

Hello,
It isn't quite clear in the post about how to perform the wireless program upload to a microcontroller.
Can you please help me a bit in how to go about it ?

[dima-ch]

Hello, rajibgupta

1. Setup USAT bootloader (https://github.com/Optiboot/optiboot) or use arduino.
2. Connect esp8266 to microcontroller or arduino:
   RX--->TX
   TX--->RX
   VCC--->VCC = 3.3V
   GND--->GND
   Make sure that the power voltage of microcontroller equals 3.3V.
3. Reset microcontroller and upload your sketch using avrdude's socket port, e.g.
   avrdude -c avrisp -p m328p -P net:192.168.4.1:23 -F -U flash:w:mySketch.hex:i
   while LED of bootloader is flashing

[rajibgupta]

If we have to reset the controller manually, then what's the point of wirelessly uploading?

[beckdac]

You reset using telnet with the commands from the README.md:

++++AT GPIO2 <0|1|2 100> # 1: pull GPIO2 pin up (HIGH) 0: pull GPIO2 pin down (LOW) 2: reset GPIO2, where 100 is optional to specify reset delay time in ms (default 100ms)

Connect the ESP GPIO2 to your AVR RESET pin.