[Ovmsdev] GPS quits?
Steve Davies
steve at telviva.co.za
Tue Jan 12 21:42:07 HKT 2021
Hi,
My GPS antenna is the one Openenergymonitor sells - Has "Frequency
1575.42MHz" and "Voltage 2.7-5V" on it from which I assume that it is
active.
I turned on gsm-nmea logging - and put that in my config.
I examined logging closely.
Seems like I was at latitude = -34.0584, longitude = 18.4477 at 11:01:24
local. Going 89.2km/h on the local M3 freeway. Sounds sensible.
We send update to ABRP:
2021-01-12 11:01:24 SAST I (420418) script:
[sendlivedata2abrp.js:287:GetUrlABRP]
http://api.iternio.com/1/tlm/send?api_key=xxx&token=yyyy&tlm={
"utc":1610442084,"soc":97,"soh":97,"speed":89.2,"car_model":"bmw:i3:19:38:other","lat":"-34.0584","lon":"18.4477","elevation":"9","ext_temp":24.5,"is_charging":0,"batt_temp":21.37,"voltage":394,"current":25.23,"power":"9.9"}
(But no sendRequestDone/Failed for quite a while)
Just after that the OVMS lost its connection to my v2 server:
2021-01-12 11:01:25 SAST I (421118) ovms-server-v2: Connection is
ovms.xxxx:6870 CAA5060
2021-01-12 11:01:25 SAST I (421118) ovms-server-v2: Status: Connecting...
Looks like everything was blocked till 11:01:56 (nothing logged - and I
poll speed at every second).
11:01:57 we sent some v2 records:
2021-01-12 11:01:57 SAST I (453118) ovms-server-v2: Send MP-0
S96.7,K,0,0.00,idle,standard,230,225,0,0,0,0,0,0,0,0,0,0,122.01,0,0,0,0,0,0,0,0,0,0,232,0,0.00,393.25,97,0.00,0.00
2021-01-12 11:01:57 SAST I (453128) ovms-server-v2: Send MP-0
D128,8,4,32.6352,42.6192,21.37,140,150440,88.8,0,24.5,3,1,1,14.45,0,12.6,144,31.122,-2.08,23
2021-01-12 11:01:57 SAST I (453138) ovms-server-v2: Send MP-0
L-34.058353,18.447664,347.5,9.7,1,1,88.8,140,0,12.981,1.848,0,0,0
2021-01-12 11:01:57 SAST I (453138) ovms-server-v2: Send MP-0
F3.2.015-435-g86461a92-dirty/ota_0/main (build idf
v3.3.4-845-gd59ed8bba-dirty Jan 11 2021
08:51:35),WBY8P620607D23024,6,1,BMWI3,VodaCom-SA,-1,-1
But I don't find these in the database so it seems they didn't get there.
At 11:01:59 seems like we got our connection back - well for MQTT at least.
2021-01-12 11:01:59 SAST I (455558) ovms-server-v3: Status: OVMS V3 MQTT
login successful
2021-01-12 11:01:59 SAST I (455558) ovms-server-v3: Tx event
server.v3.connected
2021-01-12 11:02:03 SAST I (456118) ovms-server-v3: Subscribe to MQTT topics
2021-01-12 11:02:03 SAST I (456118) ovms-server-v3: Transmit all metrics
Eventually we get the "done" call back in ABRP from the call at 11:01:57:
2021-01-12 11:02:21 SAST I (477558) script:
[sendlivedata2abrp.js:267:OnRequestDone]
response={"statusCode":200,"statusText":"OK","body":"{\"status\":
\"ok\"}",.....} inprogress:0 failed:6 succeeded:32
But the gps position is now stuck - so it seems like when the modem lost
its internet connection and recovered the GPS connection never recovered.
11:03:50 I see this:
2021-01-12 11:03:50 SAST I (566298) simcom: CREG Network Registration:
Searching
2021-01-12 11:03:50 SAST I (566378) simcom: CREG Network Registration:
RegisteredHome
Did our connection drop again? Apparently yes since MQTT re-establishes
again:
2021-01-12 11:03:51 SAST I (567678) ovms-server-v3: Status: OVMS V3 MQTT
login successful
2021-01-12 11:03:51 SAST I (567688) ovms-server-v3: Tx event
server.v3.connected
2021-01-12 11:03:54 SAST I (568118) ovms-server-v3: Subscribe to MQTT topics
2021-01-12 11:03:54 SAST I (568118) ovms-server-v3: Transmit all metrics
These are sent at 11:03:59:
2021-01-12 11:03:59 SAST I (575118) ovms-server-v2: Send MP-0
S95.4,K,0,0.00,idle,standard,228,222,0,0,0,0,0,0,0,0,0,0,122.01,0,0,0,0,0,0,0,0,0,0,232,0,0.00,392.03,97,0.00,0.00
2021-01-12 11:03:59 SAST I (575128) ovms-server-v2: Send MP-0
D128,8,4,31.59,45.7704,21.88,170,150470,89.1,0,24,3,1,1,14.49,0,12.6,144,31.122,-1.75999,23
2021-01-12 11:03:59 SAST I (575128) ovms-server-v2: Send MP-0
L-34.058353,18.447664,347.5,9.7,1,0,89.1,170,0,7.468,2.431,0,0,0
2021-01-12 11:03:59 SAST I (575138) ovms-server-v2: Send MP-0
F3.2.015-435-g86461a92-dirty/ota_0/main (build idf
v3.3.4-845-gd59ed8bba-dirty Jan 11 2021
08:51:35),WBY8P620607D23024,17,1,BMWI3,VodaCom-SA,-1,-1
I see these in the database. But the GPS position can't be right since its
the same as before at we're still buzzing along at about 90km/h.
But we never see further updates to the GPS position (times here are UTC -
2 hours behind local time):
(Or to be exact - the position reported doesn't change).
mysql> select * from ovms_historicalmessages where h_timestamp >
'2021-01-12 08:50' and h_recordtype = 'L' order by h_timestamp;
+-------+-----------+---------------------+--------------+----------------+-------------------------------------------------------------------+---------------------+
| owner | vehicleid | h_timestamp | h_recordtype | h_recordnumber |
h_data |
h_expires |
+-------+-----------+---------------------+--------------+----------------+-------------------------------------------------------------------+---------------------+
| 1 | CAA5060 | 2021-01-12 08:57:53 | L | 0 |
-34.081341,18.455862,9,-2.9,1,1,51.4,100,0,1.732,1.220,0,0,0 |
2021-01-13 08:57:53 |
| 1 | CAA5060 | 2021-01-12 08:58:54 | L | 0 |
-34.079269,18.448431,270.9,15.9,1,1,60,100,0,-12.787,1.300,0,0,0 |
2021-01-13 08:58:54 |
| 1 | CAA5060 | 2021-01-12 09:00:05 | L | 0 |
-34.077259,18.445993,7.9,9.4,1,1,78.3,110,0,5.127,1.430,0,0,0 |
2021-01-13 09:00:05 |
| 1 | CAA5060 | 2021-01-12 09:03:18 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,1,88.5,160,0,27.786,2.176,0,0,0 |
2021-01-13 09:03:18 |
| 1 | CAA5060 | 2021-01-12 09:03:59 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,89.1,170,0,7.468,2.431,0,0,0 |
2021-01-13 09:03:59 |
| 1 | CAA5060 | 2021-01-12 09:05:01 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,22.5,180,0,-10.997,2.340,0,0,0 |
2021-01-13 09:05:01 |
| 1 | CAA5060 | 2021-01-12 09:06:04 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,39.4,190,0,15.430,2.489,0,0,0 |
2021-01-13 09:06:04 |
| 1 | CAA5060 | 2021-01-12 09:07:03 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,2,190,0,0.745,2.470,0,0,0 |
2021-01-13 09:07:03 |
| 1 | CAA5060 | 2021-01-12 09:08:04 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,31.3,200,0,7.751,2.620,0,0,0 |
2021-01-13 09:08:04 |
| 1 | CAA5060 | 2021-01-12 09:09:04 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,16.6,200,0,10.479,2.580,0,0,0 |
2021-01-13 09:09:04 |
| 1 | CAA5060 | 2021-01-12 09:10:07 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,36.8,200,0,-8.339,2.580,0,0,0 |
2021-01-13 09:10:07 |
| 1 | CAA5060 | 2021-01-12 09:11:10 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,22.1,210,0,0.828,2.688,0,0,0 |
2021-01-13 09:11:10 |
| 1 | CAA5060 | 2021-01-12 09:12:07 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,29.6,220,0,30.590,2.772,0,0,0 |
2021-01-13 09:12:07 |
| 1 | CAA5060 | 2021-01-12 09:13:08 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,36.4,220,0,1.179,2.772,0,0,0 |
2021-01-13 09:13:08 |
| 1 | CAA5060 | 2021-01-12 09:14:09 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,30.5,220,0,6.646,2.750,0,0,0 |
2021-01-13 09:14:09 |
| 1 | CAA5060 | 2021-01-12 09:15:45 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,0,220,0,0.000,2.750,0,0,0 |
2021-01-13 09:15:45 |
| 1 | CAA5060 | 2021-01-12 09:15:55 | L | 0 |
-34.058353,18.447664,347.5,9.7,1,0,0,220,0,0.000,2.750,0,0,0 |
2021-01-13 09:15:55 |
| 1 | CAA5060 | 2021-01-12 09:39:42 | L | 0 |
-34.058353,18.447664,347.5,9.7,0,0,0,220,0,0.000,2.750,0,0,0 |
2021-01-13 09:39:42 |
Now this area of Cape Town where I was on the freeway has quite poor cell
coverage - it's urban but they won't have dreaded cell towers there. So
the drop outs are perhaps expected but it does seem like there is some
issue with recovering the GPS connection when the data connection comes
back?
(Why does the GPS drop when the cell connection drops?)
Steve
On Tue, 12 Jan 2021 at 12:05, Steve Davies <steve at telviva.co.za> wrote:
> Hi,
>
> I'm finding the OVMS GPS really unreliable. (...)
>
>
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