July 2015 - OvmsDev - Open Vehicles

OVMS logo
by Mark Webb-Johnson 06 Jun '17

06 Jun '17

We need to change the OVMS logo, to better reflect the vehicle independence. The existing logo is too much Tesla. Felix has kindly prepared a couple of options for us, attached below. My preference is for the one with the car outline (even though it retains a hint of Tesla), as it emphasizes the vehicle comms aspect. This is quite urgent, as the Teslive people are pushing for artwork. What do you guys/gals think? Regards, Mark

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OVMS v3
by Mastro Gippo 20 May '17

20 May '17

Hi all, I'd like to resurrect an old conversation. As we know, the current PIC is quickly running out of resources and maybe it's time to switch to a better platform. Two CAN buses are now desirable too. A microSD slot and direct USB connectivity wouldn't hurt either. I will probably have to design a similar hardware for myself, so I'd like to contribute to the OVMS by sharing the HW platform if you want; no strings attached of course, if you decide that there's no need for the upgrade, I'll keep on working on my project by myself! :) That said, I'd like to throw a few ideas to the table. - MCU: I'd like to use an STM32 micro. They seem to be emerging as the standard choice for diy ARM projects, and this offers a few interesting opportunities: -Programming it in c/c++ with the manufacturer CMSIS standard libraries (boring) -Programming it with the mbed.org SDK. Unfortunately no dev boards are available with dual CAN bus, but it will be easy to move to the correct micro of the same series once most of the software is ironed out on a dev board like the https://mbed.org/platforms/ST-Nucleo-F302R8/ -Programming it with an RTOS. NuttX would be my choice, as it's the one used in the Ardupilot Pixhawk platform, and I'd like to learn it. This would mean a steeper starting curve, but a lot of flexibility later as a lot of stuff is handled on the OS level (network stacks, SD card & filesystems, multitasking...). FreeRTOS is a nice option too. I'd like to use the STM32F405RG as it's the most similar to the one found on the Pixhawk, but of course I'm biased because of that, and that micro is quite overkill for the task. We can of course use a lower specced part and lose some RTOS fuctionality as long as it has 2 CAN buses. - MODEM: I have no experience in this field; is the SIM908 still a good choice or does anyone think that we should try new platforms? I like this, but I don't know if the price puts it out of budget: http://www.telit.com/telit/Pulsar/en_US.Store.display.1001./ge864-gps On the bright side, it can be programmed in python, so we can offload some of the work to the modem. This *could* allow us to free some space on the PIC, and keep that platform without changing MCU.. - Enclosure: I think that, even with the new MCU, we can still fit the old enclosure. Is that ok, or should we think about a more automotive-friendly one? Maybe waterproof for the twizy? And that's it. I think that the core SW developers should voice their opinion, as there is a lot of work to be done on that front. A huge problem will be keeping backwards compatibility to add features for the v2 users, so we should discuss about this too. Regards MG

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Building with free C18 compiler
by Matt Beard 19 Nov '15

19 Nov '15

Have I missed a decision to no longer support the free C18 compiler - or has it been like that for ages? I am trying to fix an issue in the iMiev code, but can no longer build 2.6.5 due to needing the full compiler and no way am I paying £300 for it. Matt Beard

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C2DM is deprecated, no new sign-ups
by Lee Howard 17 Nov '15

17 Nov '15

I've got my own OVMS server going. However, I wasn't seeing notifications on my phone (Android) since moving away from tmc.openvehicles.com. Looking at the ovms_server.pl code it appears that ovms_server.conf requires this section: [c2dm] email=<email> password=<password> accounttype=<unknown> [This "c2dm" section, along with the "server", "master", and "log" sections are undocumented in the docs/HOWTO.server.txt file.] Okay, so it would seem that I need to set-up a C2DM account with Google and put that info into the conf file. But, Google has deprecated C2DM in favour of Google Cloud Messaging (GCM), and Google is not granting any new C2DM accounts... http://developer.android.com/google/gcm/c2dm.html Is the C2DM account used by tmc.openvehicles.com a generic account that can be used by other OVMS servers? I suspect that it is a private account. If so, then push notifications for Android users on independent servers will necessarily require a transition to GCM. Thanks, Lee. -- *Lee Howard* *Mainpine, Inc. Chief Technology Officer* Tel: +1 866 363 6680 | Fax: +1 360 462 8160 lee.howard(a)mainpine.com | www.mainpine.com

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sourcing SIM908 in China
by Arthur Hebert 25 Jul '15

25 Jul '15

Hi, I'm working on a project using the same SIM908 module as the OVMS, and we're trying to reduce cost. I'm wondering if by chance anyone here knows a good place to look. One of my co-workers says she found a supplier offering the SIM908 for $11.50 for qty 225. Ideally looking for something under $10/ea. Also, if anyone knows a similar SIMCOM module with GSM+GPS but maybe fewer features (e.g. dual-band instead of quad-band?), that could possibly work for us as a lower-cost option. Thanks for any help, Arthur

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Registered phone / password security issue
by Michael Balzer 23 Jul '15

23 Jul '15

Hi everyone, some users including me experienced loss or garbling of eeprom parameters. I once saw by chance that my registered phone number had turned empty -- I seldom need to use SMS, so I only saw this when checking the parameter list on the App for another config. The same now also occured to another user I'm in contact with, and it now turned out that's not only annoying but a security issue: The current logic of net_sms_checkcaller() allows access to any phone number if the parameter is empty. The same applies to net_sms_checkpassarg(), which will allow any password to be used if no password is stored. As this kind of data loss can only be detected by checking the parameters, it's possible to check for "open" modules by just trying to access them from time to time -- you only need to know the SIM card number. I'm about to submit a change for both functions to NOT allow access if their respective param slots are empty. As the initial flash contents has the "OVMS" standard password, a completely lost module should still be restorable by re-flashing. Do I miss something? Is there any reason for the "empty=wildcard" behaviour? Regards, Michael -- Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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3 bytes to char
by Nikolay Shishkov 02 Jul '15

02 Jul '15

I have a situation where I need to convert a value that is stored as 3 bytes to a char.The can be for example 7ED95, which is reported in 3 consequtive bytes 07, ED, 95.This value in decimal is 519573, which corresponds to a 51.9% SOC. Is the proper way to do this conversion (from the 3 bytes to the value of 51) like this: char soc = (char)(((unsigned long)value[1]<<16 + (unsigned long)value[2]<<16 + (unsigned long)value[3])/10000); I have been doing stuff like that before with unions, but can't remember how either. Thanks, Nikolay

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Re: [Ovmsdev] web api
by Christopher Cook 02 Jul '15

02 Jul '15

If you ever need to test your connection to anything (web/smtp/databases etc) try using a telnet client (an installable feature on windows) telnet <hostname> <port> If you get a timeout then the host or port is not accessible to you (firewalled). A blank screen on the other hand indicates a successful connection. Chris Sent from my Samsung Galaxy smartphone.-------- Original message --------From: Nikolay Shishkov <nshishkov(a)yahoo.com> Date: 01/07/2015 11:01 am (GMT+00:00) To: OVMS Developers <ovmsdev(a)lists.teslaclub.hk> Subject: Re: [Ovmsdev] web api I was able to log in fine from another network... I will chase down if it is our IT or the internet provider that is blocking traffic.Thanks again for the help,Nikolay On Wednesday, July 1, 2015 11:54 AM, Nikolay Shishkov <nshishkov(a)yahoo.com> wrote: Thanks Mark, I am getting ERR_CONNECTION_TIMED_OUT I will try from another network... I am starting to have a suspission that our IT blocked some ports... Nikolay On Wednesday, July 1, 2015 11:49 AM, Mark Webb-Johnson <mark(a)webb-johnson.net> wrote: Here’s my test: $ curl -s -X GET -c ~/Downloads/ovms-cookie -v "https://tmc.openvehicles.com:6869/api/cookie?username=USER&password=PASSWOR… Hostname was NOT found in DNS cache* Trying 54.243.136.230...* Connected to tmc.openvehicles.com (54.243.136.230) port 6869 (#0)* TLS 1.2 connection using TLS_DHE_RSA_WITH_AES_256_CBC_SHA256* Server certificate: tmc.openvehicles.com* Server certificate: COMODO RSA Domain Validation Secure Server CA* Server certificate: COMODO RSA Certification Authority* Server certificate: AddTrust External CA Root> GET /api/cookie?username=USER&password=PASSWORD HTTP/1.1> User-Agent: curl/7.37.1> Host: tmc.openvehicles.com:6869> Accept: */*>* HTTP 1.0, assume close after body< HTTP/1.0 200 Authentication ok< Content-Type: text/plain< Expires: Wed, 01 Jul 2015 09:46:18 GMT* Added cookie ovmsapisession=“<REDACTED>" for domain tmc.openvehicles.com, path /api/, expire 0< Set-Cookie: ovmsapisession=<REDACTED>< Connection: close< Cache-Control: max-age=0< Content-Length: 9< Access-Control-Allow-Origin: *< Date: Wed, 01 Jul 2015 09:46:18 GMT<Login ok Also tried 6868 for http, and ok. What is the error you are getting? Regards, Mark. On 1 Jul, 2015, at 5:41 pm, Nikolay Shishkov <nshishkov(a)yahoo.com> wrote: The following one:http://tmc.openvehicles.com:6868/api/cookie Should I use another one? On Wednesday, July 1, 2015 11:39 AM, Mark Webb-Johnson <mark(a)webb-johnson.net> wrote: Seems ok for me. What URL are you using? On 1 Jul, 2015, at 4:25 pm, Nikolay Shishkov <nshishkov(a)yahoo.com> wrote: Hi Mark, The web api seem to be inaccessible. Is it me or is it the server? Nikolay_______________________________________________ OvmsDev mailing list OvmsDev(a)lists.teslaclub.hk http://lists.teslaclub.hk/mailman/listinfo/ovmsdev _______________________________________________ OvmsDev mailing list OvmsDev(a)lists.teslaclub.hk http://lists.teslaclub.hk/mailman/listinfo/ovmsdev _______________________________________________ OvmsDev mailing list OvmsDev(a)lists.teslaclub.hk http://lists.teslaclub.hk/mailman/listinfo/ovmsdev _______________________________________________ OvmsDev mailing list OvmsDev(a)lists.teslaclub.hk http://lists.teslaclub.hk/mailman/listinfo/ovmsdev

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web api
by Nikolay Shishkov 01 Jul '15

01 Jul '15

Hi Mark, The web api seem to be inaccessible. Is it me or is it the server? Nikolay

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