SIMCom SIM7020系列MQTT应用注释说明书 Simplify Communication Simplify Communication.www.simcomm2m.com SIM7020 Series MQTT Application Note Version: 1.1 Release Date: April 19, 2018 Application
modem.sendAT("+CMQTTSTART"); if (!modem.waitResponse(1000)) { Serial.println("MQTT START command failed"); return false; } // Acquire a client modem.sendAT("+CMQTTACCQ=0,\"Client1\",1,4"); //1 MQTT server with SSL/TLS 4 MQTT version 3.1.1 if (!modem.waitResponse(1000)) ...
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Step 4: Preparation of 3G/GPRS/GSM/GPS Shield SIM5320 Before installing a sim card in the slot, you must disable the PIN code request. Then install the SIM card in the slot on the bottom side of the board as shown in the figure. Two jumpers must be installed in the positionRX-1(D...