I have issues with getting ESP8266 to work for me. The current state is that when I connect power I get this output on 74880 bitrate:
ets Jan 8 2013,rst cause:2, boot mode:(2,6)
Fatal exception (0): epc1=0x4010006a, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
I tried esptool.py with nodemcu firmware, I tried ESP Flash Download Tool according to instruction from here: https://www.allaboutcircuits.com/projects/update-the-firmware-in-your-esp8266-wi-fi-module/ - still the effect is the same.
One thing to note is that I also have issues with getting the upload to work, but once it starts it always succeeds. Later, however, it does not seems to have any effect.
I saw many people having similar issue, but reflashing for me does not help. Any further ideas? What do these numbers mean?
UPDATE: I have just noticed that when restarting the module multiple times from time to time I get this output:
ets Jan 8 2013,rst cause:1, boot mode:(3,0) load 0x40100000, len 816, room 16 tail 0 chksum 0x8d load 0x3ffe8000, len 788, room 8 tail 12 chksum 0xcf ho 0 tail 12 room 4 load 0x3ffe8314, len 288, room 12 tail 4 chksum 0xcf csum 0xcf 2nd boot version : 1.2 SPI Speed : 26.7MHz SPI Mode : DIO SPI Flash Size : 8Mbit jump to run user1
Any idea what might cause different behaviour from time to time? Note that I would expect +OK next, but it never happens.