I managed to repeat this using a phone hotspot that I could turn on/off, server v2 start, and wifi mode client. Strange that it didn’t crash on the first stop/start cycle, but on the second.

I’ve pushed a patch to enable the Web Server and MDNS Service to be disabled via menuconfig. Could you try:


I’m not 100% sure where the problem is (it could be a component, or it could be a memory/stack issue), but let’s try to narrow down the issue by disabling those first.

With telnet, MDNS, and WebServer disabled, the only network service should be ovms_server_v2.

See if you can then recreate the problem?

For me:


With just wifi + ovms_server_v2, it seems more stable for me. Can you try, and let me know?

Regards, Mark.

On 14 Nov 2017, at 5:59 PM, Tom Parker <tom@carrott.org> wrote:

On 06/11/17 01:48, Michael Balzer wrote:
Works in Germany with Hologram & roaming via Telekom.de:

I found the Hologram sim works in New Zealand via Vodafone, but the modem doesn't seem to healthy. Most of the time the OVMS doesn't successfully establish communication with the modem. I can see that the modem has 3.3V between pin 1 and pin 28, and pin 15 is being toggled during the power cycle, but it only gets to 2.8V. Most of the time I get the following over and over in the logs.

I (75539) simcom: State timeout, transition to 2
I (75539) simcom: State: Enter PoweringOn state
I (75539) simcom: Power Cycle
D (76539) SIMCOM tx: 41 54 0d 0a AT..
...
D (85539) SIMCOM tx: 41 54 0d 0a AT..
I (85539) simcom: State timeout, transition to 2
I (85539) simcom: State: Enter PoweringOn state
I (85539) simcom: Power Cycle

It seems to work rarely and randomly, or maybe I have a bad connection in my board? How would I go about diagnosing this?

I did find that if you forget to connect the antenna it doesn't connect to the cell network when it does work! That took an embarrassing amount of time to notice.

…but the ip stack seems to crash on CREG 2:

Mine connected to the v2 server and then crashed, the stack trace looks the same as yours and the register content is similar.

I (69196) ovms-server-v2: Send MP-0 S0,K,0,0,stopped,standard,0,0,0,0,0,0,0,21,0,0,0,0,0.00,0,0,0,0,-1,0,0,0,0,0,0,0,0.00,0.00,0
D (69206) SIMCOM ppp rx: 19 ac 50 18 39 08 47 00 00 00 4e 73 4d 50 53 74 ..P.9.G...NsMPSt
D (69206) SIMCOM ppp rx: 70 39 4e 67 3d 3d 0d 0a 61 3d 7e                p9Ng==..a=~
D (69206) SIMCOM ppp tx: 7e 21 45 00 00 ae 00 06 00 00 ff 06 e1 1a 0a aa ~!E.............
D (69206) SIMCOM ppp tx: c7 0f bc 8a 4b e5 54 0f 1a d3 00 00 19 ac a5 ce ....K.T.........
D (69206) SIMCOM ppp tx: 2f 10 50 18 16 98 e6 d4 00 00 4e 73 4d 50 53 74 /.P.......NsMPSt
D (69216) SIMCOM ppp tx: 70 30 4e 78 32 65 47 7a 66 43 4e 79 2f 72 6d 44 p0Nx2eGzfCNy/rmD
D (69216) SIMCOM ppp tx: 62 6b 36 6f 4c 35 71 71 56 39 46 38 71 47 51 46 bk6oL5qqV9F8qGQF
D (69226) SIMCOM ppp tx: 66 79 73 38 50 77 69 34 73 53 72 37 4e 63 4c 54 fys8Pwi4sSr7NcLT
D (69236) SIMCOM ppp tx: 4d 74 71 32 46 34 67 44 65 62 6d 33 50 2b 5a 6a Mtq2F4gDebm3P+ZjGuru Meditation Error of type LoadProhibited occurred on core  1. Exception was unhandled.
Register dump:
PC      : 0x401724d9  PS      : 0x00060330  A0      : 0x8017251a A1      : 0x3ffdaec0
0x401724d9: ip4_route at /home/ubuntu/esp/esp-idf/components/lwip/core/ipv4/ip4.c:250 (discriminator 2)

A2      : 0x0000f01d  A3      : 0x00000000  A4      : 0x3ffead48 A5      : 0x3f42695c
A6      : 0x00000008  A7      : 0x3ffdb0e8  A8      : 0x801724cd A9      : 0x3ffdaea0
A10     : 0x00000000  A11     : 0x00000000  A12     : 0x3ffdca38 A13     : 0x3ffdb0d0
A14     : 0x00000004  A15     : 0xab9423a7  SAR     : 0x00000018 EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000f0d2  LBEG    : 0x4000c349  LEND    : 0x4000c36b LCOUNT  : 0x00000000

Backtrace: 0x401724d9:0x3ffdaec0 0x40172517:0x3ffdaee0 0x40170706:0x3ffdaf00 0x4016ad7b:0x3ffdaf40 0x4016ad9d:0x3ffdaf70 0x4016ae3e:0x3ffdaf90 0x4016b29c:0x3ffdafb0 0x4016e9d6:0x3ffdafd0 0x4016ea17:0x3ffdaff0 0x40177441:0x3ffdb010 0x40177805:0x3ffdb030 0x4017784c:0x3ffdb050 0x4017a9e5:0x3ffdb070 0x4017773c:0x3ffdb090 0x4017deba:0x3ffdb0b0 0x4017def6:0x3ffdb0d0 0x401795c9:0x3ffdb0f0 0x4017b005:0x3ffdb110 0x4017b0b0:0x3ffdb130 0x401793eb:0x3ffdb150 0x40177269:0x3ffdb170 0x4019e244:0x3ffdb1a0 0x4019e391:0x3ffdb1c0 0x40165999:0x3ffdb1e0
0x401724d9: ip4_route at /home/ubuntu/esp/esp-idf/components/lwip/core/ipv4/ip4.c:250 (discriminator 2)

0x40172517: ip4_route_src at /home/ubuntu/esp/esp-idf/components/lwip/core/ipv4/ip4.c:159

0x40170706: tcp_rst at /home/ubuntu/esp/esp-idf/components/lwip/core/tcp_out.c:1336 (discriminator 4)

0x4016ad7b: tcp_abandon at /home/ubuntu/esp/esp-idf/components/lwip/core/tcp.c:1630

0x4016ad9d: tcp_abort at /home/ubuntu/esp/esp-idf/components/lwip/core/tcp.c:1630

0x4016ae3e: tcp_netif_ipv4_addr_changed_pcblist at /home/ubuntu/esp/esp-idf/components/lwip/core/tcp.c:1630

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