ESP8266 Community Forum

- Sat Jun 13, 2015 6:06 am #20345 I am running my ESP-01 through my USB supply and by passing it through a LDO. It was working correctly in the past few days. But suddenly I am seeing a strange problem in it, while it's bootup it is sending a huge error message (given below) by blinking the blue LED, and then it is starting to draw about 280mA of current constantly and it is not responding to any commands.
Before hooking it up in a more powerful supply I want to make sure that it is a power problem, because ESP is not supposed to draw more than 250mA of current at a instant of time, and I don't have a constant current supply.

Error Message:

Code: Select allrllœž|Œlà|Œlìb|Ž‚ì’r’blbŒònnžlnnœâìbplblrlpònà‚lbnâ|ŒŽpŒbŒònnîlŒŽl`nnŽlnrŽ’’nŒl`pònàrŒœœâàbnâ|ìŽbŒònnîŽl`nnl`nrŽ’’n’l`pònàrŒœœâàìlŽbnâ|ŒŒŽŽbŒònnîl`nnl`nrŽ’’n‚l’`r’’n‚l’`rlŒŒnœŒònnžŒžâŒrnnnŒlŒbprlì’lì’’‚ŒŽlll~rlì’lllnœâŒl’lllì’lŒnàŽnì’n~ŒŽŽnžll’’nžnŒ’ânlž|bl`rlFatal exception (0):
epc1=0x4021bac2, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0xð0000000, depc=0x00000000
FXW±eøception (0):
epc1=0x40211880, epc2=0x00000000,*ÁÍ=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, gpc?=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x40211880, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
Fatal exception (0):
epc1=0x

- Sat Jun 13, 2015 5:29 pm #20396 Moin,

I guess your module messed up the firmware configuratiikn.
Try blanking flash area at 0x7e000 or brute force: write blank512k to the flash and after that reflash your firmware
Or if you want to help to finf an easier why: test if it's possible to use erase flash command of esptool.py
to erase flash area at 0x7e000 anf if that helps.

Cal

Get your modules here:

https://www.banggood.com/custlink/KvGGhGF4wG

- Mon Jun 15, 2015 2:04 pm #20523 Sorry! It was just a power problem. I didn't hookup up my LM317 correctly.