1.8.7 fails to install

klankschap · Post by **klankschap** » Sat Jan 28, 2017 1:24 pm

i tried to flash the latest 1.8.7 firmware into the esp8266 nodemcu amica
however it will result in continuous text dump on the screen.
version 1.8.6 gives similar results

version 1.8.4 does work.
How to proceed?

.F

Mike Teachman · Post by **Mike Teachman** » Sat Jan 28, 2017 3:14 pm

Based on your observations I think this post might help you:
viewtopic.php?f=16&t=2625&hilit=flash+size+esptool

I suggest also to flash with 115200 BAUD

Here is how I use esptool to flash micropython

Code: Select all

esptool.py --port COMx erase_flash
esptool.py --port COMx --baud 115200 write_flash 0 esp8266-20161110-v1.8.6.bin

klankschap · Post by **klankschap** » Sat Jan 28, 2017 3:30 pm

jwissing · Post by **jwissing** » Wed Feb 08, 2017 5:07 pm

I had the same issue when trying to burn the latest firmware to a new Amica nodeMCU board.
Adding -fm dio to the write_flash did help.

Code: Select all

esptool.py --port /dev/ttyUSB0 erase_flash
esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash -fm dio 0 ../esp8266-20170208-v1.8.7-205-g181f7d1.bin

klankschap · Post by **klankschap** » Wed Feb 08, 2017 5:15 pm

the -fm option was in my original script.
did not work

.F

jwissing · Post by **jwissing** » Thu Feb 09, 2017 6:01 am

This is reproducable.
After flashing without -fm dio:

Code: Select all

Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
000000
...

The firmware is in this exception loop.

After flashing with -fm dio a get a normal prompt:

Code: Select all

MicroPython v1.8.7-205-g181f7d1 on 2017-02-09; ESP module with ESP8266
Type "help()" for more information.
>>>

BTW. I don't know what -fm dio actually is doing.

klankschap · Post by **klankschap** » Thu Feb 09, 2017 9:36 am

jwissing · Post by **jwissing** » Thu Feb 09, 2017 11:53 am

Is it possible that erase and flash overlap?

klankschap · Post by **klankschap** » Thu Feb 09, 2017 11:55 am

i don't know
how to check ?

i have two esp8266 and they behave identical.
they work with v1.8.4 but not 1.8.7

jwissing · Post by **jwissing** » Thu Feb 09, 2017 5:42 pm

I can somehow reproduce your problem when flashing with --flash_size=8m on a 4MB board.
When i flash with --flash_size=32m it is working.

Sorry i have no more ideas what could be wrong.

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1.8.7 fails to install

1.8.7 fails to install

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Re: 1.8.7 fails to install

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Re: 1.8.7 fails to install