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vshymanskyy / TinyGSM

A small Arduino library for GSM modules, that just works
GNU Lesser General Public License v3.0
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sendSMS() fails repeatedly #470

Open Elmi77 opened 3 years ago

Elmi77 commented 3 years ago

[X] I have read the Troubleshooting section of the ReadMe

What type of issues is this?

[ ] Request to support a new module

[ ] Bug or problem compiling the library [X] Bug or issue with library functionality (ie, sending data over TCP/IP) [X] Question or request for help

What are you working with?

Modem: SIM700G Main processor board: LilyGO SIM7000G TinyGSM version: 0.10.9 Code: modem.sendSMS(String(notifySMS[0]),"blatest ")

Scenario, steps to reproduce

I try to send a SMS. GSM is connected, the internet functionality is fine, so I'm successfully registered at the network.

Expected result

The SMS should be sent

Actual result

sendSMS() returns with "false".

Debug and AT command log

AT+CMGF=1

OK AT+CSCS="GSM"

OK AT+CMGS="+4915000000000"

blatest  +CMS ERROR:AT+CGATT?

+CGATT: 1

OK AT+CIFSR;E0

I'm of course using a valid phone number, +4915000000000 is only a placeholder.

Any idea why my SMS is not sent?

SRGDamia1 commented 3 years ago

Nope. :( I've never even tested the SMS functionality; I just followed what the AT command manual said. It looks like it should have worked.

It didn't even give you the error code. That's annoying. Did you try #define TINY_GSM_DEBUG Serial to see if you can at least get it to give you the verbose error code?

Sorry!

Elmi77 commented 3 years ago

The output above is with debug output and TINY_GSM_DEBUG set to serial interface enabled - that's all I get there.

SRGDamia1 commented 3 years ago

Are you sure your SIM and plan supports texting? The IoT plans we usually get from Hologram don't include it.

I'm sorry, I don't really have any other guesses about what the problem might be.