Boot loop since WPA2 credentials entered

[gaijinsr]

Hi,

since I added WPA2 credentials (the eduroam use case as described in the manual...) my ESP is stuck in a boot loop, the ouput below is produced in 3-5sec.

Any idea what is going wrong here?

Any chance of recovery short of zeroing the flash?

Best, Stefan

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

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮o⸮r⸮⸮'|⸮$dld#⸮⸮|;⸮l⸮g⸮⸮'⸮$⸮⸮s⸮l⸮l⸮$⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0) E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮'⸮;⸮⸮g|⸮ddldc⸮⸮|{⸮l⸮o⸮⸮g⸮d⸮⸮s⸮l⸮l⸮d⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0) E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮g⸮{⸮⸮o|⸮lldl c⸮⸮<{⸮l⸮o⸮⸮g⸮d`⸮⸮s⸮l⸮l⸮$⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0) E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮g⸮{⸮⸮o|⸮lldl c⸮⸮<{⸮l⸮o⸮⸮'⸮$`⸮⸮{⸮d⸮d⸮l⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮n⸮;⸮⸮g|⸮ddldc⸮⸮|{⸮l⸮o⸮⸮g⸮d⸮⸮s⸮l⸮l⸮l⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 40 MHz

Booting rom 0. ⸮⸮⸮⸮g⸮{⸮⸮o|⸮lldl c⸮⸮<{⸮l⸮o⸮⸮g⸮d`⸮⸮r⸮l⸮l⸮d⸮

WiFi Repeater V2.2.15 starting

running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0) E:M 1568 Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000 ⸮ ets Jan 8 2013,rst cause:2, boot mode:(3,6) `

[martin-ger]

"E:M XXX" means out of memory. Guess, the eduroam certificate is too large for the RAM of the ESP8266. Can you check about the size of the certificate (sometimes it contains multiple Sub-CAs and their keys), perhaps on another computer?

No idea, how to work around that...

[gaijinsr]

Hi Martin, thanks for the quick answer. I captured the authentication process on a different computer and extracted the packet with the certificates,

... TLSv1.2 Record Layer: Handshake Protocol: Server Hello TLSv1.2 Record Layer: Handshake Protocol: Certificate Content Type: Handshake (22) Version: TLS 1.2 (0x0303) Length: 5327 Handshake Protocol: Certificate Handshake Type: Certificate (11) Length: 5323 Certificates Length: 5320 Certificates (5320 bytes) Certificate Length: 2553 Certificate: ...

The packet is repeated several times, but it always has 5327 bytes for the three certificates. I know the ESP8266 is short on memory, but 5K should not be a problem, should it?

[gaijinsr]

I now tried using the ready-made firmware (previously I had compiled it myself), this solved the out-of-memory problem. Unfortunately, while everything is fine until I use PEAP, as soon as I try to connect to eduroam, I get constant WDT resets:

... epeater V2.2.15 starting running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(98:f4:ab:e4:7b:f2) + softAP(9a:f4:ab:e4:7b:f2) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0)

ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 8 Mbit Flash Mode: DIO Flash Speed: 80 MHz Booting rom 0.

[Adam-Birchall]

I have the exact same issue. I've used a range of ESP-01s and have gone from a simplistic to overkill circuit to make sure power fluctuations weren't causing the problem.

As above, when building from source:

Fatal exception 28(LoadProhibitedCause): epc1=0x40216923, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000004, depc=0x00000000

And when flashing the precompiled binaries:

ets Jan 8 2013,rst cause:4, boot mode:(3,6)

@gaijinsr Did you have any luck?

[abskjha]

I have got the similar problem with NodeMCU. @AReubens @gaijinsr Have you got any success with this boot loop?

[Adam-Birchall]

No progress made with it I'm afraid, I've been using a ESP32 instead

[abskjha]

@AReubens, that is still good. Have you been able to connect to wpa-enterprise network with ESP32? Have you used this source code https://github.com/martin-ger/esp32_nat_router

[Adam-Birchall]

Ah, so this is has been the bane of a project for a while. I've been attempting to connect to a university wpa-enterprise network that has some oddities in the radius server config that I'm not 100% clear on. If you're having this same problem then it may be that the networks are configured similarly...

I've been able to connect to this wpa-enterprise network using both a esp8266 and an esp32 when programmed through the arduino ide using their respective wpa examples from the arduino ide, but neither of the include the NAT functionality I wanted this project for since the core/idf versions are older. The newer esp32 idf does include NAT support and that's what the the esp32 project you linked requires, however when using the newer version of the esp-idf which supports NAT, I've been unable to connect to the wpa-enterpirse network.

In sort, currently I've been able to have either NAT support or WPA-enterprise connection success, but not both. And that's on both esp8266 and esp32 devices.

[Blitzbirnep]

Hey guys,

any progress on this issue? I have the same problem as reported above.

First I have set up the ssid and peap credentials, saved the config and restarted the esp8266. However afterward it is stuck in a boot loop.

I managed to connect via a Linux computer with the following wifi settings:

• WPA 2 Enterprise
• TTLS
• Anonymous identity empty
• No CA certificate is required (checked)
• mschapv2 (no eap)
• username
• password

I tried two different power supplies (laptop, external 2.5 A supply) same effects.

The terminal log is below: running rom 0 Config found and loaded (3216 Bytes) WPA2 ENTERPRISE VERSION: [v2.0] enable Starting Console TCP Server on port 7777 Starting Web Config Server on port 80 mode : sta(8c:aa:b5:7c:7f:c9) + softAP(8e:aa:b5:7c:7f:c9) add if0 add if1 dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1) bcn 100 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 1 cnt EAP-TTLS: Start (server ver=0, own ver=0)

ets Jan 8 2013,rst cause:4, boot mode:(3,6)

wdt reset load 0x40100000, len 1328, room 16 tail 0 chksum 0x12 load 0x3ffe8000, len 604, room 8 tail 4 chksum 0x34 csum 0x34

rBoot v1.4.2 - richardaburton@gmail.com Flash Size: 32 Mbit Flash Mode: DIO Flash Speed: 80 MHz

[martin-ger]

Think, this happens when the certificate provided is too large for the memory. No idea, how to fix that...

[bear-zd]

if this problem solved?