Closed TravisDuck999 closed 3 years ago
Hello,
Please try LilyGO-T-SIM7000G/examples/Arduino_TinyGSM/ATdebug/ instead of AT_Debug, got the the same Guru-Error with this. Works for me...
Hi, yea I think that was my problem, weird but in the end of the day it works now and I dont really need the TinyGSM library as I'm planning to do everything with AT commands anyway.
For anyone else getting this problem, only use the examples on the SIM7000 Git page as stated above, the bundeled examples with TinyGSM did not work for me at all.
Thanks for the help.
Hi, I have been hitting problems that I did not expect or I can find anywhere else online with this board, I am hoping you can help. I just got 2 new LilyGo SIM7000G's the newer 2020 version.
The first one checked my SIM card, plugged in the anetnna's and put in the SIM card and hit upload. I have constantly been getting Illegal Instruction errors.
I think it has something to do with the Serial connection. I have tried a basic blink sketch to make sure the ESP32 works, that is fine.
The full error the ESP32 spits out on boot is :
This is with the AT_Debug sketch in the Tiny GSM library. It seems to just not corrently talk to the SIM7000G no matter what I do. ( I have tried hardcoding the baud rate )
I battled with this for 2 days, trying bigger power supplies and lots of other sketchs and libraries but no luck.
I then plugged in the other board thinking the first one was broken. I got AT command outputs almost immeditaly without uploading anything ( picutres attached ) WITHOUT the GPS antenna attached, with the antenna attached I dont think my laptop USB port can supply the current to power everything.
I am perfectly happy not having GPS functionality for this porject if it matters.
The thing that has completly thrown me is now when I upload the AT_debug sketch I get the SAME Illegal Instruction error.
Is there any chance I could see the code that gets loaded on the board before it is shipped ? Maybe I can get it working from that, or at least upload it and see if it works again as it did.
The ony other thing I can think of is that maybe I'm selecting the wrong upload options on Arduino IDE ? I have tried the ESP Wrover module and the ESP32 Dev module.
The output before I uploaded code to the second LilyGo SIM7000G is below.
With SIM card and antenna attached.![IMG_2783](https://user-images.githubusercontent.com/77530800/111029359-05169100-8405-11eb-89d0-b766fe6d01c3.JPG)
Without Sim card.
Any ideas or pointers would be fantastic as I can find no one else that has this problem online, if you have access to the production code of the LilyGo T-SIM7000G that I could look over that would be amazing, because something is not right here.