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Bootloop on fw 0018000902

PostPosted: Mon Oct 20, 2014 2:11 pm
by reaper7
somethings is wrong with latest firmware 0018000902 available via CIUPDATE.
I try 5 different modules with STATION & STATION+AP mode and I got
problem with connection to my openwrt AP (after powerup or AT+RST)
It looks like a "bootloop", sometimes 5, sometimes 20 and more loops before ESPs get the connection to AP.

I revert firmware to 00170901 and the connection is always established for the first time.
I don't have any problem with esphttpd project too - connected for the first time always!

On second uart (tx on GPIO2) I got still the same logs (when bootloop):
Code: Select all ets Jan  8 2013,rst cause:4, boot mode:(3,7)

wdt reset
load 0x40100000, len 212, room 16
tail 4
chksum 0x5e
load 0x3ffe8000, len 788, room 4
tail 0
chksum 0x1c
load 0x3ffe8314, len 72, room 8
tail 0
chksum 0x55
csum 0x55
jump to user2

ready!!!
softAP(1a:fe:34:XX:XX:XX)
add if0
add if1
dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1)
bcn 100
e:34:XX:XX:XX)
add if0
add if1
scandone
add 0
aid 1
pm open phy2,type:2 0 0
cnt

connected with MyStuffAP, channel 6
dhcp client start...
Fatal exception (28):
epc1=0x402604a4, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000098, depc=0x00000000


what mean
Fatal exception (28)
??
anyone else have these problems??

P.S. I have the same problem with @spacejunkie mod firmware ESP8266 Cloud Update with XRST XIPR NetIO

Re: Bootloop on fw 0018000902

PostPosted: Mon Oct 20, 2014 3:01 pm
by gbit
Xtensa core EXCCAUSE register value 28 means "LoadProhibitedCause".
Seeing that it's showing epc1=0x402604a4, excvaddr=0x00000098
it looks like some instruction at PC=0x402604a4 tried to load at address 0x00000098 and failed (probably not a valid address).
Maybe a NULL pointer dereference?
If this is firmware code, is there a way to provide a bug report?

Re: Bootloop on fw 0018000902

PostPosted: Mon Dec 22, 2014 8:29 pm
by Rory
Was this issue ever resolved?