ESP8266/Reflashing - Revision history

Admin: /* Connection Errors */

2016-06-23T23:37:50Z

Connection Errors

← Older revision		Revision as of 23:37, 23 June 2016
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	I tried holding just the reset button down. Nothing.		I tried holding just the reset button down. Nothing.

			Maybe my chips are all bunk.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T23:37:36Z

Connection Errors

← Older revision		Revision as of 23:37, 23 June 2016
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	A fatal error occurred: Failed to connect to ESP8266		A fatal error occurred: Failed to connect to ESP8266
	</pre>		</pre>

			Nothing.

			I tried holding down the program button then pushing the reset button, and let them go and tried the command again. Nothing.

			I tried holding down the program button then pushing the reset button, then running the command while they were both pushed down. Nothing.

			I tried holding just the program button down while I ran the command. Nothing.

			I tried holding just the reset button down. Nothing.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T23:35:44Z

Procedure

← Older revision		Revision as of 23:35, 23 June 2016
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	Well crap.		Well crap.


			==Connection Errors==

			Apparently no commands work, because the ESP chip does not show up anywhere at all:

			<pre>
			$ esptool.py chip_id
			esptool.py v1.1
			Connecting...

			A fatal error occurred: Failed to connect to ESP8266
			</pre>

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T23:34:23Z

Procedure

@@ Line 120: / Line 120: @@
 <pre>
 $ esptool.py write_flash 0x00000 v0.9.2.2\ AT\ Firmware.bin
 </pre>
 =Flags=
 {{ESP8266Flag}}

2016-06-23T23:30:54Z

Procedure

← Older revision		Revision as of 23:30, 23 June 2016
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	===Procedure===		===Procedure===

	Set up the breadboard.		Set up the breadboard. It's a bit complicated, so be patient and double-check your work.

	[[Image:ESP8266_Reflashing_Schematic.png\|500px]]		[[Image:ESP8266_Reflashing_Schematic.png\|500px]]
Line 112:		Line 112:
	[[Image:ESP8266_Reflashing_BreadboardPic.jpg\|500px]]		[[Image:ESP8266_Reflashing_BreadboardPic.jpg\|500px]]

	Now plug it in. You should see the serial device show up in <code>/dev/tty.usbserial</code>.		Now plug it in. You should see the serial device show up in <code>/dev/tty.usbserial</code>. You're set to flash.

	Now ~~you are ready to~~ flash it.		Enter the flash programming mode by holding down the PROG button and then pressing and releasing the RESET button.

			Now actually flash the board with esptool.py:

			<pre>
			$ esptool.py write_flash 0x00000 v0.9.2.2\ AT\ Firmware.bin
			</pre>

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T23:29:26Z

Procedure

← Older revision		Revision as of 23:29, 23 June 2016
Line 106:		Line 106:
	===Procedure===		===Procedure===

	~~First, set~~ up the breadboard.		Set up the breadboard.

	[[Image:ESP8266_Reflashing_Schematic.png\|500px]]		[[Image:ESP8266_Reflashing_Schematic.png\|500px]]
Line 113:		Line 113:

	Now plug it in. You should see the serial device show up in <code>/dev/tty.usbserial</code>.		Now plug it in. You should see the serial device show up in <code>/dev/tty.usbserial</code>.

			Now you are ready to flash it.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T23:28:16Z

Procedure

← Older revision		Revision as of 23:28, 23 June 2016
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	First, set up the breadboard.		First, set up the breadboard.

	[[Image:ESP8266_Reflashing_Schematic.~~jpg~~\|500px]]		[[Image:ESP8266_Reflashing_Schematic.png\|500px]]

	[[Image:ESP8266_Reflashing_BreadboardPic.jpg\|500px]]		[[Image:ESP8266_Reflashing_BreadboardPic.jpg\|500px]]

2016-06-23T23:21:56Z

Circuit for Flashing ESP8266

← Older revision		Revision as of 23:21, 23 June 2016
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	Two buttons, for program and reset, will be provided so we can pull the GPIO0 and RST pins to ground.		Two buttons, for program and reset, will be provided so we can pull the GPIO0 and RST pins to ground.

			===Procedure===

			First, set up the breadboard.

			[[Image:ESP8266_Reflashing_Schematic.jpg\|500px]]

			[[Image:ESP8266_Reflashing_BreadboardPic.jpg\|500px]]

			Now plug it in. You should see the serial device show up in <code>/dev/tty.usbserial</code>.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T21:59:23Z

Circuit for Flashing ESP8266

← Older revision		Revision as of 21:59, 23 June 2016
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	Flashing the ESP8266 requires connecting various pins in particular sequences. We can do this by setting up a circuit on a breadboard to enable us to flash the chip. We should (I hope, fingers crossed) only have to do that once.		Flashing the ESP8266 requires connecting various pins in particular sequences. We can do this by setting up a circuit on a breadboard to enable us to flash the chip. We should (I hope, fingers crossed) only have to do that once.

			To flash the board, we must reset the ESP8266 board (using the RST reset pin), while holding the GPIO0 pin low.

			We must use 2.2K pullup resistors for the chip-select and reset pins to keep the ESP8266 enabled.

			Two buttons, for program and reset, will be provided so we can pull the GPIO0 and RST pins to ground.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}

2016-06-23T21:57:19Z

Esptool Flashing Software

← Older revision		Revision as of 21:57, 23 June 2016
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	cautious, data is already CRCed		cautious, data is already CRCed
	</pre>		</pre>

			==Circuit for Flashing ESP8266==

			Flashing the ESP8266 requires connecting various pins in particular sequences. We can do this by setting up a circuit on a breadboard to enable us to flash the chip. We should (I hope, fingers crossed) only have to do that once.

	=Flags=		=Flags=

	{{ESP8266Flag}}		{{ESP8266Flag}}