Library compatible with SIM5320A?

[dahdo1m]

Hi all,

I am trying to make a diy 3G cellular data logger for my school project, I'm using a TinySine 3G/GSM/GPS module with an Arduino UNO and an AT&T sim card. I keep getting:

AT+HTTPTERM ERROR AT+HTTPINIT ERROR

I used the Adafruit library and this one uploaded here, but keep getting the same results. Could you please help? Thank you,

[botletics]

It should be compatible, although I know HTTPS uses different commands. Did you first enable GPRS before posting? That's critical for the HTTP to work properly. You should also replace the Adafruit library with my version of the library. Follow the wiki in this Github and load the LTE_Demo code and use the "G" command to enable GPRS then use the "2" command to send data to dweet.io.

As a side note, I actually wrote a function for the SIM5320 HTTPS in my fork of the Adafruit FONA library in a different repo. The function is called "postData3G" in the .cpp file if you want to take a look.

Let me know if you get it working!

[botletics]

Sorry, actually now I recall that the SIM5320 doesn't use the same HTTP commands as the other modules. It uses the "AT+CHTTP____" commands instead. I would have to update my library to get it working.

[dahdo1m]

I have been trying to send AT+CHTTPS___ using the pass through tunnel, this is what I'm getting:

AT+CHTTPSSTART OK AT+CHTTPSOPSE="https://dweet.io/dweet/for/dahdo1m?temp=24.6",443

"no response"!

[dahdo1m]

I have been reading the SIM5320A AT Commands List, the HTTPS commands are quite different, and I feel that I don't fully understand what they are supposed to do.

[botletics]

I haven't tried pass through tunnel. I'll update my library shortly with an HTTP/HTTPS function for you to try shortly. Will keep you updated. However, I can't actually test it out since I don't have a SIM5320A anymore.

[botletics]

OK, I just updated the library and the "LTE_Demo" sketch. Just follow these steps:

• Delete the existing Adafruit FONA library you have in your libraries folder (path is Documents/Arduino/libraries by default)
• Follow this wiki to get my version of the library installed
• Open the "LTE_Demo" example sketch but uncomment the "SIMCOM_3G" line instead of the default "SIMCOM_LTE" line at the very top of the code
• Upload and run the code. You should see the menu appear.
• Enter the "G" command in your serial monitor to enable 3G
• Enter the "3" command to send data to dweet.io via HTTP or HTTPS. Check out the function definition in the sketch on how to use the function. By default it sends via HTTPS.

Let me know if it works! I'd love to know since I don't actually have one to test it out. Thanks

[dahdo1m]

Hi Tim,

I tried it today, the code you wrote does send the following AT Command CHTTPSSTART and CHTTPSOPSE. The response for the first is OK, but the response for the second is ERROR, just similar to what I described earlier when I used the pass through tunnel. Are we using proper AT Commands? Do you think that SIM5320A is not suitable for connecting to the internet and sending data? The reason I'm asking is because the AT Commands list for SIM5320A does not show HTTP commands, and the HTTPS commands feel insufficient to send data through the 3G network.

[botletics]

The SIM5320A definitely works with HTTP and HTTPS, I tried it before. It just uses different commands than the other 2G modules. Let me ask again:

• Did you first enable GPRS with the "G" command in the LTE_Demo sketch?
• Are you even connected to the network? Use "n" to check network registration

[dahdo1m]

I enabled it by pressing G, or by pressing g then G, the network was available, signal appeared to be OK, and network was registered.

[botletics]

Hmmmm that's strange. I'll investigate this when I get a chance.

[botletics]

By the way, did you set the right APN for your SIM card? By default I use "hologram" but you need to change it for your specific SIM card if you're not using a Hologram.io SIM card.

[dahdo1m]

I used the APN for AT&T "m2m.com.attz"

[dahdo1m]

I have an AT&T trial sim card

[botletics]

Please verify that it's sending the following AT command exactly as the line below:

AT+CHTTPSOPSE="www.dweet.io",443,2

[botletics]

If it is and it's failing, then go to the LTE_Demo sketch and search for this line:

if (!fona.postData3G("www.dweet.io", 443, "HTTPS", URL)) // Server, port, connection type, URL

and use good 'ole HTTP instead and see what happens:

if (!fona.postData3G("www.dweet.io", 80, "HTTP", URL)) // Server, port, connection type, URL

Also try getting rid of "www" and see if that works. I'm pretty darn sure this worked with "www" when I tested it on SIM5320A.

[dahdo1m]

Hi Timothy,

I tried doing this today I kept getting the response: ERROR, whenever it sends the "AT+CHTTPSOPSE" command

[botletics]

Could you please take a screenshot of the serial monitor output? Thanks!

[dahdo1m]

[dahdo1m]

I tried changing it to "HTTP" and 80,2 , and removing "www." also, all gave the same response

[botletics]

Looks like you have some weird characters showing up at the end of the "CHTTPSOPSE" command. That could very well be the problem. Does it do that every time?

[dahdo1m]

Only after I changed it

[botletics]

Doesn't look like you were entering the port 80 correctly. You should be copying/pasting this line instead:

if (!fona.postData3G("www.dweet.io", 80, "HTTP", URL)) // Server, port, connection type, URL

the "2" means HTTPS and is interpreted inside the function, so you shouldn't input that. In this case it will interpret the "HTTP" as "1" and not a "2". Try that and take another screenshot please! Also, keep the "www" because I'm sure that worked with mine before.

[dahdo1m]

[botletics]

Ahh OK, must be a library thing then. Will look into that.

[botletics]

OK, just uploaded a new Adafruit_FONA.cpp file in the repo. Download that and replace the existing one in your Arduino libraries folder (Documents -> Arduino -> libraries -> Adafruit_FONA by default), restart the IDE, and re-upload and see if that fixed the weird characters.

[dahdo1m]

It worked :)

[botletics]

Awesome! You were able to post data via HTTPS as well?

[almagroos]

Hi, I need your help, I am trying to sen data my web page using Adafruit 3G FONA SIM5320A

I got the same error. Please see the attached picture.

[botletics]

Sorry, currently I don't have a SIM5320A to test personally, but people say the library works with the same AT command sequence.

[almagroos]

Thank you for your replay.

I downloaded the folder "code" and I followed all the instructions that you posted in your page. I am not sure if I used the right Adafruit_FONA.CPP because the code cannot recognize the fona.postdata3G function.

any suggestions my project has been suspended.

[botletics]

You might have an old version of the library. When did you download the code folder?

[almagroos]

yesterday.

[botletics]

Can you please copy the error message here? It compiles just fine for me.

[botletics]

And did you uncomment the line

#define SIMCOM_3G // SIM5320A/E

near the top of the code, and comment out all the other lines?

[almagroos]

I did that

[botletics]

Can you please copy the error message? You also need to delete any existing Adafruit FONA library inside your Arduino libraries folder (default for Windows is Documents/Arduino/libraries). Most likely you have redundancies and it's using the old library.

[almagroos]

I used this line instead of the other if (!fona.postData3G("www.dweet.io", 80, "HTTP", URL)) // Server, port, connection type, URL

C:\Program Files (x86)\Arduino\libraries\Adafruit_FONA\Adafruit_FONA.h:151:101: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

boolean postData(const char server, uint16_t port, const char connType, char URL, char body = "");

                                                                                                 ^

C:\Program Files (x86)\Arduino\libraries\Adafruit_FONA\Adafruit_FONA.cpp: In member function 'boolean Adafruit_FONA::postData(const char, const char, char, const char)':

C:\Program Files (x86)\Arduino\libraries\Adafruit_FONA\Adafruit_FONA.cpp:1552:51: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

if (! sendCheckReply(dataBuff, "DOWNLOAD", 10000))

                                               ^

C:\Program Files (x86)\Arduino\libraries\Adafruit_FONA\Adafruit_FONA.cpp: In member function 'boolean Adafruit_FONA::postData(const char, uint16_t, const char, char, char)':

C:\Program Files (x86)\Arduino\libraries\Adafruit_FONA\Adafruit_FONA.cpp:1659:42: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

if (! sendCheckReply(auxStr, ">", 10000))

                                      ^

C:\Users\magro\AppData\Local\Temp\ccFiS6UQ.ltrans0.ltrans.o: In function `loop':

ccFiS6UQ.ltrans0.o:(.text+0x1e66): undefined reference to `Adafruit_FONA_3G::postData3G(char const, unsigned int, char const, char*)'

collect2.exe: error: ld returned 1 exit status

exit status 1 Error compiling for board Arduino/Genuino Mega or Mega 2560.

[botletics]

Please see my previous comment and delete any old Adafruit FONA libraries that you may have installed before installing mine.

[almagroos]

I did and I will do it again now

[almagroos]

I got the same error message

[botletics]

Also, if it doesn't even compile, how did you get it to run the code? You showed it running the LTE_Demo already...

[almagroos]

When I use if (!fona.postData("www.dweet.io", 80, "HTTP", URL)), it is working but the error as in message below

FONA> G ---> AT+CGATT=1 <--- OK ---> AT+CGSOCKCONT=1,"IP","m2m.com.attz" <--- OK ---> AT+CIPMODE=1 <--- OK ---> AT+NETOPEN=,,1 <--- ERROR Failed to turn on FONA>

[almagroos]

it works when I use fona.postData() instead of fona.postData3G()

[botletics]

Please use the updated version of the examples as well, you have an old version. The new LTE_Demo does not have the "postData3G()" function.

https://github.com/botletics/SIM7000-LTE-Shield/blob/master/Code/examples/LTE_Demo/LTE_Demo.ino

[almagroos]

Should I change the port to 80 or not

[almagroos]

Same error

FONA> n ---> AT+CREG? <--- +CREG: 0,1 Network status 1: Registered (home) FONA> 2 ---> AT+HTTPTERM <--- ERROR ---> AT+HTTPINIT <--- ERROR Failed to complete HTTP GET... FONA>

[botletics]

For the SIM5320 you need to use the "3" command, not "2". You can try port 80 and "HTTP" but I doubt that would make any difference. Sorry, I don't know what's going on with your setup.

[almagroos]

Do you mean this line

define SIMCOM_3G // SIM5320A/E

[botletics]

In the post above you used the "2" command in the LTE_Demo. You should use "3" instead. But yes, you should also use the SIMCOM_3G define line.

[almagroos]

when I chose 3 in command I get this error

+STIN: 25 3 ---> AT+CHTTPSSTART <--- ERROR ---> AT+CHTTPSSTART <--- ERROR Failed to complete HTTP/HTTPS request... FONA>

Please is there any error in this line of code

if (!fona.postData("www.aelmagrous.com", 80, "HTTP", "GET /SensorDemo/add_data2.php?dataRow=50 HTTP/1.1")) // Server, port, connection type, URL Serial.println(F("Failed to complete HTTP/HTTPS request..."));