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Francesco Virlinzi · ‎2018-12-17

Hi all

Have a look @

https://www.st.com/resource/en/application_presentation/teseo-3-quick-testing-guide.pdf

it's an easy way to test the connection to the Teseo III server based Assisted GNSS without special equipment and/or tool.

EHuse · ‎2019-03-12

I am trying to use this guide to test access to the server and am having trouble. We are using the Teseo-LIV3F device. I have been able to get a password from the device using the $PSTMSTAGPS8PASSGEN command. But trying to access the server using that password and device id returns a 401 Unauthorized.

Application note AN5160 sections 4.1.1.4 implies that a password needs to be assigned by a location.io administrator. Is this no longer true and there is no requirement to first contact location.io?

Francesco Virlinzi · ‎2019-03-12

Hi

The AN5160 is a generic application note which covers all the TeseoIII IC and modules.

In case of TeseoIII IC a dedicated account has to be provided for each customer.

In case of Teseo-LIV3F, the module has a dedicated account assigned on location.io system.

You can follow the presentation (link) to test your access to location.io.

Thanks

Regards

Francesco

EHuse · ‎2019-03-12

Hello,

Okay so that is good to know. So this is what I am attempting to test from a PC running Ubuntu. I'm using Curl but without the proxy setting. Can you look at this and tell me if I'm doing something incorrectly?

curl --verbose --header "Content-Type: application/json" --header "Accept: application/json" --header "Authorization: RXN-SP cId=ZYDLLXxEH94dEeX2,mId=MYST,dId=00513730383638361400759E,pw=xrhjr7hbCP464UpZdA0Oxearolh8DX++JpbRXdwxcJk=" --data "[{\"ee\":{\"version\":8,\"constellations\":[\"gps\"],\"seedAge\":0}}]" http://stm.api.location.io:80/rxn-api/locationApi

* Trying 72.51.26.210...

* TCP_NODELAY set

* Connected to stm.api.location.io (72.51.26.210) port 80 (#0)

> POST /rxn-api/locationApi HTTP/1.1

> Host: stm.api.location.io

> User-Agent: curl/7.58.0

> Content-Type: application/json

> Accept: application/json

> Authorization: RXN-SP cId=ZYDLLXxEH94dEeX2,mId=MYST,dId=00513730383638361400759E,pw=xrhjr7hbCP464UpZdA0Oxearolh8DX++JpbRXdwxcJk=

> Content-Length: 59

>

* upload completely sent off: 59 out of 59 bytes

< HTTP/1.1 401 Unauthorized

< Content-Language:

< Content-Type: text/html

< Date: Tue, 12 Mar 2019 15:14:22 GMT

< Content-Length: 994

<

* Connection #0 to host stm.api.location.io left intact

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>Error report</title><style type="text/css"></style> </head><body><h1>HTTP Status 401 - Unauthorized</h1><hr/><p><b>type</b> Status report</p><p><b>message</b>Unauthorized</p><p><b>description</b>This request requires HTTP authentication.</p><hr/></body></html>

Francesco Virlinzi · ‎2019-03-12

Looking the field they seem correct to me.

Did you evaluate the <gpsTime> to create the password? It's the current time expressed in the number of seconds since midnight 06-Jan-1980

Thanks

Regards

Francesco

EHuse · ‎2019-03-12

That leads me to a question. Do I need to update the password every time I access the server? If so, how many seconds is a password valid for? Right now for my test I'm doing things by hand. Sending the command to the chip on our board, then copy/paste the result into my PC to run the command.

I tried the test again with keeping the time as close as possible and it still failed. I'm using the GPS seconds reported from this web site http://leapsecond.com/java/gpsclock.htm

I did experiment with the $PSTMSTAGPS8PASSGEN and it returns the same password for wide ranges of seconds but does eventually change with a large enough number change. So I'm guessing that the same password is valid for some length of time.

EHuse · ‎2019-03-12

Okay, so that website was giving me a bad number for seconds. :) I found the right value and generated a password and it worked fine.

But I still have the question of how long a password is valid for? I'll probably reset it everytime we power up so not a big issue.

Thanks for your help.

EHuse · ‎2019-03-12

Okay, so I have a response coming back from the server now. But I'm a little confused about what to do with the data coming back. I see some NMEA commands listed to program seeds. I see the command $PSTMSTAGPSSEEDBEGIN, $PSTMSTAGPSBLKTYPE can be used. I assume this is programmed with the "seed" value coming back in a JSON response?

Does this data require an initial general location? (i.e. using cell site or wifi address)

There is also a command $PSTMEPHEM, which can program ephemeris data? Is this command still used?

Francesco Virlinzi · ‎2019-03-13

Hi

> Do I need to update the password every time I access the server?

Yes. You do.

> If so, how many seconds is a password valid for?

each password is valid several minutes (~10 minutes)

Regards

Francesco

Francesco Virlinzi · ‎2019-03-13

Ciao

From location.io you can access two kind of data:

Real-Time ephemeris data
Extented ephemeris (to predict 2weeks ephemeris data)

Which data you download depends on the HTTP_REQ you did.

iolocation provides you a JSON file.

The JSON file has to be parsed to fill the '$PSTMSTAGPSSEEDBEGIN, $PSTMSTAGPSBLKTYPE' (for Extended Ephemeris) or $PSTMEPHEM (for Real Time data) command and inject the data into the Teseo-LIV3F.

BUT the JSON-File description is under NDA (you can read a subset in the AN5160 which is public)

To avoid NDA as ST we prepared a prebuilded library available in the X-CUBE-GNSS1 (the STM32 drivers but the Library is ARM-Cortex-M0 oriented to be portable) to provide a library which parses the JSON file and injects the data in Teseo-LIV3F