Debugging ESP8266 NONOS SDK EPC Exception with ObjDump

Assist in tracking down the offending line of C code that is causing the following output.

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Calling myConnectToStronestWifiCallback callback


AP Already Loaded[../library/webserver.h][init_webserver][786]

Setting Callback for WebServer


-=-=-=-=-=-=-=-=- START DumpSPItable -=-=-=-=-=-=-=-=-

Read from: 0x67004-0x67007, Pending ff: EOF!

-=-=-=-=-=-=-=-=- END DumpSPItable -=-=-=-=-=-=-=-=-


IGMP Joining: 3301a8c0 faffffef, joined

Fatal exception 9(LoadStoreAlignmentCause):

epc1=0x40101074, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000003, depc=0x0�000000

ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x3ffe8000, len 2192, room 16

tail 0

chksum 0xcd

load 0x3ffe8890, len 22224, room 8

tail 8

chksum 0x44

load 0x40100000, len 30784, room 0

tail 0

chksum 0xc8

csum 0xc8



sleep disable

Starting ESP8266 Standard!

SDK version:2.1.0(116b762)

Loaded from: 0x00

Vdd33_Const: ff

data : 0x3ffe8000 ~ 0x3ffe8890, len: 2192

rodata: 0x3ffe8890 ~ 0x3ffedf60, len: 22224

bss : 0x3ffedf60 ~ 0x3fff4a98, len: 27448

heap : 0x3fff4a98 ~ 0x3fffc000, len: 30056

reset reason: 2



[StoreEXCCount] creating with: 1

epc1=0x40101074, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000003, depc=0x00000000

System halt!

The following should be resolved by disassembling the offending object file and locating the function that is kicking off the exception.

Skills: C Programming, C++ Programming, Arduino, C# Programming, Software Architecture

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About the Employer:
( 6 reviews ) Palm Desert, United States

Project ID: #21665766

9 freelancers are bidding on average $183 for this job


Hello, I read the description of your project thoroughly. I understand your requirements initially and I have experiences of the field. I am a speicalist of: * React.js, Angular for Frontend, * .NET Core API for Bac More

$140 USD in 2 days
(25 Reviews)

Why do you think that disassembling an object file is the only way to diagnose the problem? The source code for the SDK is open-source ( [login to view URL] ) - so I don't see why disassembly More

$75 USD in 3 days
(9 Reviews)

Hi, I've written a tutorial on how to use GDB with the NONOS SDK (the one arduino uses). I can assist you finding the problem and developing the firmware. Check out the article: [login to view URL] More

$450 USD in 7 days
(11 Reviews)

We are a team of Electrical and Electronics engineers and we are Excellent in the following areas: • Embedded C Programming. • VHDL/Verilog • Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC and STM32. • ID More

$140 USD in 7 days
(30 Reviews)

I have experienced with C programming in ESP modules I can help you to fix bug. Best Regrads, Saim

$100 USD in 7 days
(10 Reviews)

Hello Just the output from the monitor window is not enough and maybe there are more assertions needed in the source to get the source of the problem Regards

$250 USD in 10 days
(8 Reviews)

Hello. I am a senior Microcontroller developer and electronic engineer. I have developed the ESP8266 firmware for WiFi and BLE communication. I have rich experience so that I can finish your task perfectly. Currently I More

$140 USD in 7 days
(4 Reviews)

Hi I'm Matt from Warton Circuits Ltd located in the UK. I've have 20 years of industry experience in microcontroller development / debugging and I am currently finishing off today a project for another client using a More

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(4 Reviews)

Hi, Thanks for posting your project, Yes, I bid on your project because I have experience and confident in the field, I would like to have a clear discussion with you and understand your requirements. Kind Regar More

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