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) [ ] Question or request for help

What are you working with?

Modem: SIMCOM_SIM7080 breakout Main processor board: Arduino Zero TinyGSM version: 0.11.5 Code: MQTT_CLIENT

Scenario, steps to reproduce

use NB-IOT SIM MqttClient.txt

Changed lines in example :

define TINY_GSM_MODEM_SIM7080

define SerialMon SerialUSB

const char apn[] = "telenor.iot";

Test 1 : ... modem.waitForNetwork()

Test 2 // modem.waitForNetwork() modem.gprsConnect(apn, gprsUser, gprsPass)

Expected result

connect to APN - testing using AT+CGREG

Actual result

Test 1: waitForNetwork() Waits for AT+CREG to be set - which is wrong we don't get GSM on NB-IOT SIM.

Test 2: gprsConnect

tinyGSM is using commands not in the SIM7070-7090 command reference manual like AT+CIPSHUT and AT+CAPBR. Does not get connected to GPRS and reverts to CREG as if GSM connection expected AT&W does not work on sim7080 - parameters are autosave..

test1.log test2.log

Debug and AT command log

Test 1: 2:51:25.966 -> Waiting for network...AT+CREG? 22:51:25.966 -> 22:51:25.966 -> +CREG: 0,2

Test 2: 23:38:42.284 -> Connecting to telenor.iotAT+CIPSHUT 23:39:42.236 -> AT+SAPBR=3,1,"Contype","GPRS" 23:39:43.231 -> AT+SAPBR=3,1,"APN","telenor.iot" 23:39:44.259 -> AT+CGDCONT=1,"IP","telenor.iot" 23:39:45.254 -> AT+CGACT=1,1 23:40:45.218 -> AT+SAPBR=1,1 23:42:10.140 -> AT+SAPBR=2,1 23:42:40.150 -> fail 23:42:50.132 -> AT+CREG?

okvittem commented 1 year ago

User error - SIM800 was also defined. I am sorry for troubling you !