Hello Arduino fans,
My project is to design a GPS tracker. For that I use an Adafruit Metro Mini (same as Arduino UNO) and a GSM GPRS GPS module to send the location information by SMS.
the module I use you can find here : https://www.amazon.com/WHDTS-Antenna-Support-Message-Microcontroller/dp/B072K5JLZD/ref=sr_1_4?s=electronics&ie=UTF8&qid=1516668178&sr=1-4&keywords=arduino+gsm
And the controller used is a A7 Ai Thinker. I am supposed to control it using AT Commands.
I managed to connect to the device but I have two problems :
-1) During the initialization the device sends a message. I compared mine to many other posts and the beginning is the same bu at the end I should receive something like :
^CINIT: 8, 2048, 1
^CINIT: 16, 0, 1638500
^CINIT: 32, 0, 0
+CREG: 0
+CTZV: 16/06/08, 03:56:22, +08
+CIEV: service, 1
+CIEV: roam, 0
+CREG: 1
But instead I only have :
^CINIT: 8, 2048, 1
^CINIT: 16, 0, 1638500
^CINIT: 32, 0, 0
+CREG: 0
+CIEV: service, 0
+CIEV: roam, 0
+CREG: 3
I checked with my mobile phone and I have service, I tested with 2 different SIM cards and I have exactly the same problem.
I removed the PIN code for both of them as I saw that could be a source of problems.
-2) Whatever other AT command I send I receive the same message :
CME ERROR:58
But I can't find what does this error mean... I have found different website listing all the possible CME errors but the 58 is not listed.
Thank you for your help!