fona | Java library for Adafruit FONA / Sim800 cellular module

My issue is fairly simple to describe but I have no idea what the problem could be. So I got my FONA 3G and immediately after taking it out of the box, I connected the battery and I wired up my FTDI board (aka USB to serial converter), and then I plugged it into my USB port to try and establish communication. I just tried the most basic at command AT(using PuTTy). You're supposed to get an OK in response but the FONA doesn't appear to even notice that I'm trying to talk to it. I type AT and press enter and nothing happens at all.

The issue is most certainly not my FTDI board, I'm very experienced communicating with wifi modules and other GSM modules using PuTTy. So please don't be concerned with the setup. That's 100 percent definitely not the problem.

I was able to send AT commands after plugging the module into my laptop directly using the module's USB input, but there is still some issue with its UART. I haven't been able to send or receive any communications directly from RX and TX. It wont respond to any programs I load up onto my arduino. Its like the UART is asleep.

If you have experience with FONA 3G, please speak up and tell me what steps you took to get the UART to respond. What should the status indicator look like before its ready to receive commands? Any knowledge you have about the FONA3G module would be helpful.

As a side note, the FONA3G has a chip number. It is SIM5320a. I don't know if that helps. Most people know it as FONA 3G.

I was stuck while trying to extract some text in a sentence via this website.

I am trying to send a packet to a server over 3g and TCP connection. Below is a link to the .cpp and .h file I have found:

https://os.mbed.com/users/Nels885/code/Adafruit_FONA_3G/

More specifically, I am really confused on how TCPSend works under the Adafruit_FONA_3G class. I am trying to implement it but my code seems to get stuck at packet[0] = 0; under function bool Adafruit_FONA_3G::TCPsend(char *packet).

I have tried commenting out packet[0] = 0; and the code runs all the way through. I have also tried initializing char* packet[32]; before packet[0] = 0; and the code runs all the way through. I am assuming the function is not detecting the packet input.

Here is the specific function from the .cpp file:

Using mbed OS and stm32 nucleo board with Adafruit Fona 3g, I am trying to send data to a server via 3g connection. I am using the .cpp file and .h file posted here: https://os.mbed.com/users/Nels885/code/Adafruit_FONA_3G/file/b18cfba4283a/

The code seems to get stuck on getTCPtimeout. I am having trouble figuring out why this is the case.

I have tried commenting out the getTCPtimeout function to see the results and the code runs through completely, but never establishes a connection with the server.

I have a Raspberry Pi 3 running Raspian Lite

I have recently purchased the Adafruit Fona 32u4. The instant I received the item, I soldered pins on it. In hindsight, I believe it was a mistake.

The link to the Arduino code FONAtest_KEY_mod is this. https://github.com/adafruit/Adafruit_FONA

The purpose of the code is to test the functionality of the chip. You type in commands in the serial monitor and receive an output. But before that I keep on getting the response, "Fona not found". What should I do.

I'm attempting to use a watchdog interrupt as a timer to sleep for a certain period of time with my Arduino. My problem lies in the fact that, on wake-up, I need to conduct operations that will take longer than 8 seconds.

Currently, my Arduino will sleep for 1 minute, using successive interrupts by the watchdog to wake it up and place it back into sleep. After 1 minute, however, I begin to conduct operations that take longer than 8 seconds and the watchdog interrupt times out.

I want to shut off the watchdog timer, conduct operations, then re-enable it and return to sleeping.

Here is my code:

I've been reading and learning a ton about python, but all the import variations having different results is a tad confusing.

I was having an issue where a global variable I had imported was always the default value, even though I called a method in that module that manipulates it. I had imported it like so: