Sample Code

•

SIM7000 NB-IoT Shield can be controled by AT command through serial port and it recognizes

115200 baud rate in default. So we need to reset the baud rate to 19200 and below to avoid

garbled. (The software serial port has an unreliable baudrate higher than 38400bps.)

•

AT command must end with a CR&LF, shown as below:

•

AT command list:

/*

* File

: DFRobot_SIM7000_ATtest.ino

* Power : SIM7000 needs 7-12V DC power supply

* Brief : This example use the serial port to send AT command to control

the SIM7000

* With initialization completed, we can enter AT command to SIM7000 dire

ctly

* Note

: If you use Mega please connect PIN8 PIN10 and set PIN_RX = 10

* The AT command must end with CR&LF

*/

#include <DFRobot_SIM7000.h>

#define PIN_TX

7

#define PIN_RX

8

SoftwareSerial

mySerial(PIN_RX,PIN_TX);

DFRobot_SIM7000

sim7000;

void setup() {

Serial.begin(115200);

sim7000.begin(mySerial);

sim7000.turnOFF();

delay(5000);

Serial.println("Turn ON SIM7000......");

if(sim7000.turnON()){

//Turn ON SIM7000

Serial.println("Turn ON !");

}