GSM unknown signal connection +CSQ: 99,99

[GeorgeSikora]

Hello, Iam trying to send SMS via our module with AT commands, but if I try to get how much signal I have, it just send me unknown signal like "99,99" wich is written in documentation. After trying to send message, it just send me "+CMS ERROR: 500" ... The pin is unlocked, but nothing wants to work... Can you help me, iam lost :(

[LilyGO]

Hello. Can the example run properly

[GeorgeSikora]

Here it is, at the beginning it just spams "AT+CEREG?", after some while it shows few "+CGREG: 0,2" but normally it response "+CGREG: 0,0", so I dont know where is the problem ?

The console:

AT+CEREG?
+CEREG: 0,0
OK
AT+CGREG?
+CGREG: 0,0
OK
AT+CEREG?
+CEREG: 0,0
OK
AT+CGREG?
+CGREG: 0,0
OK
Initializing modem...
AT
OK
ATE0
OK
AT+CMEE=0
OK
AT+CLTS=1
OK
AT+CBATCHK=1
OK
AT+CPIN?
+CPIN: READY
OK
AT+GMM
SIMCOM_SIM7000G
OK
Modem Name: SIMCOM SIM7000G
ATI
SIM7000G R1529
OK
Modem Info: SIM7000G R1529
AT+SGPIO=0,4,1,0
OK
AT+CPIN?
+CPIN: READY
OK
AT+CPIN="3245"
ERROR
AT+CNMP=38
OK
AT+CMNB=2
OK
AT+CGDCONT=1,"IP","internet","0.0.0.0",0,0,0,0
AT+CGDCONT=13,"IP","internet","0.0.0.0",0,0,0,0
Waiting for network...
AT+CEREG?
OK
AT+CGREG?
+CGREG: 0,0
OK
AT+CEREG?
+CEREG: 0,0
OK
AT+CGREG?
+CGREG: 0,0
OK
AT+CEREG?
+CEREG: 0,0

[LilyGO]

Hello, is your SIM card normal?

[GeorgeSikora]

Yes, on TTGO esp33 SIM800L it works properly

[LilyGO]

Does your SIM card support LTE? Patterns can be configured in code. /* 2 Automatic 13 GSM only 38 LTE only 51 GSM and LTE only

• • • */ String res; res = modem.setNetworkMode(38); if (res != "1") { DBG("setNetworkMode false "); return ; }

  /* 1 CAT-M 2 NB-Iot 3 CAT-M and NB-IoT

• • */ res = modem.setPreferredMode(2); if (res != "1") {

    DBG("setPreferredMode false "); return ; }

[pploume]

Hi, Same problem ... stuck at +CGREG: 0,2 with the above mentionned example.

I've tryied several params for modem.setNetworkMode and modem.setPreferredMode ...

SIM from thingsmobile.com, working in my own mobile phone

Signal strength seems OK : +CSQ : 99,99 Status Led is always ON Networks Led is blinking

I'm lost, thanks for your help

platformio.ini as follows : [env:esp-wrover-kit] platform = espressif32 board = esp-wrover-kit framework = arduino monitor_speed = 115200 lib_deps = vshymanskyy/TinyGSM@^0.11.4 vshymanskyy/StreamDebugger@^1.0.1

first lines in terminal :

Initializing modem... ATE0 AT+CFUN=0 Failed to restart modem, attempting to continue without restarting AT+CFUN=0 AT+CFUN=1 AT+CFUN=1 OK Initializing modem... AT AT OK ATE0 ATE0 OK AT+CMEE=0 OK AT+CLTS=1 OK AT+CBATCHK=1 OK AT+CPIN? +CPIN: READY OK AT+GMM SIMCOM_SIM7000G OK Modem Name: SIMCOM SIM7000G ATI SIM7000G R1529 OK Modem Info: SIM7000G R1529 AT+SGPIO=0,4,1,0 OK AT+CNMP=2 OK AT+CMNB=3 OK

[GeorgeSikora]

I had something wrong with board... new works fine.

[Rasmus105]

I am encountering similar problems.

What was wrong with your board?