SIM7070G Cat-M/NB-IoT/GPRS HAT

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SIM7070G Cat-M/NB-IoT/GPRS HAT
Compatible with Raspberry Pi 2B/3B/Zero/Zero W
SIM7080G-Cat-M-NB-IoT-HAT-5.jpg
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Overview

Introduction

SIM7070G NB-IoT / Cat-M / GPRS HAT For Raspberry Pi, Global Band Support, with GNSS Positioning.

More

Features

  • Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards.
  • Supports communication protocols such as TCP/UDP/HTTP/HTTPS/TLS/DTLS/PING/LWM2M/COAP/MQTT.
  • Supports GNSS positioning (GPS, BeiDou, GLONASS, Galileo).
  • Onboard USB interface, to test AT Commands, get GPS positioning data, and so on.
  • Breakout UART control pins, to connect with host boards like Arduino/STM32.
  • Onboard power conversion circuit, default is 3.3V operation, can be set to 5V via jumper resistor.
  • SIM card slot, supports ONLY 1.8V SIM card (3V SIM card is not available).
  • 2 x LED indicators, easy to monitor the working status.
  • Baudrate: 300~3686400 bps.
  • Common baud rate auto-negotiation: 9600/19200/38400/57600/115200 bps.
  • Comes with online development resources and manual (examples for Raspberry Pi/Arduino/STM32).

Communication Parameters

  • Support Bands:
    • NB-IoT: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66/B71/B85
    • Cat-M: B1/B2/B3/B4/B5/B8/B12/B13/B14/B18/B19/B20/B25/B26/B27/B28/B66/B85
  • Transmission Power:
    • Class 5(Typ.21dBm)
  • Data Transmission:
    • NB-IoT
      • UL≤150kbps
      • DL≤136kbps
    • Cat-M
      • UL≤1119kbps
      • DL≤589kbps
    • GPRS
      • UL≤85.6kbps
      • DL≤85.6kbps
    • EDGE
      • UL≤236.8kbps
      • DL≤236.8kbps

GNSS Parameters

  • Receiver type
    • 16 channels
    • C/A Code
  • Working Frequency
    • GNSS L1: 1575.42±1.023MHz
    • GLONASS: 1598.0625 ~ 1605.375MHz
    • BeiDou: 1559.052 ~ 1591.788MHz
    • Galileo L1: 1575.42±1.023MHz
  • Update Frequency: 1 Hz (Default)
  • GNSS data format: NMEA-0183
  • GNSS antenna: active antenna

Other Parameters

  • Power supply: 5V
  • Logic voltage: 5V/3.3V (switch via 0ohm resistor)
  • Overall current (idle mode): about 41mA
  • Operation temperature: -40°C ~ 85°C
  • Storage temperature: -45°C ~ 90°C
  • Dimensions: 30.5mm x 65mm


User Guide

Testing it in Windows PC

1. Hardware connection and driver installation
  • Before testing, you should prepare
    • A Micro USB cable
    • LTE and GPS Antennas
    • The SIM7070G Cat-M/NB-IoT/GPRS HAT
    • An NB-IoT SIM card.
  • Insert the SIM card into the SIM7070 board, and connect the LTE antenna and the GPS antenna. Connect the micro USB of the SIM7070G board to the PC by USB cable.
  • Hold the PWRKEY button for about 1s to power on the module. After powering on, the STA indicator lights on, NET indicator quick-blinks first and then slow-blinks.
  • Download the driver file, unzip it. Then update the driver by Devices Manager.
  • USB has enumerated three devices. Choose AT Port COM31 as the communication serial port. Users can check the port number enumerated by the PC.
  • Note: The SIM7080G supports global frequency bands, so there may be delays when registering on the network. Users in different countries and regions should consult local mobile service providers. About LTE-M or LTE-NB usage, or wait for the SIM7080G to automatically lock onto the local frequency band after registering on the network. You can use the command "AT+CPSI?" to query network information from the SIM7080G.
SIM7070G-Cat-M-NB-IoT-GPRS-HAT-004.jpg
SIM7080G Cat-M NB-IoT HAT 002.jpg
SIM7080G Cat-M NB-IoT HAT 033.jpg

Test network

For more information about the AT commands, you can refer to SIM7080 Series AT Command Manual V1.02

Command Descriotion Return
AT Test command OK
AT+CPIN? Check SIM card OK
AT+CNMP=38 Choose LTE mode OK
AT+CMNB=2 Choose NB network OK
AT+CSQ Check signal intensity OK
AT+CGREG? Check netwok status OK
AT+CGNAPN Query APN OK
AT+CPSI? Request UE system information OK
AT+CNACT=0,1 activate application network OK
AT+CNACT? Check network IP OK
AT+CNCAT=0,0 Close application network OK

SIM7070G-Cat-M-NB-IoT-GPRS-HAT-007.jpg

Test MQTT

For more information about the MQTT, please refer to SIM7070_SIM7080_SIM7090 Series_MQTT(S)_Application Note_V1.02

Please test Web by clicking here. Please check the TCP port and domain name when testing, for details, please refer to here

MQTT Test
Command Description Return
AT+SMCONF Set MQTT OK
AT+CSSLCFG SSL configuration OK
AT+SMSSL Select SSL setting OK
AT+SMCONN MQTT connection OK
AT+SMPUB Send data packet OK
AT+SMSUB Subscribe to topics OK
AT+SMUNSUB unsubscribe OK
AT+SMSTATE Request MQTT connection status OK
AT+SMPUBHEX Set data format to hexadecimal OK
AT+SMDISC Disconnecting MQTT OK

HTTP(S) Test

The following table is the HTTP(S) test command, the test results are shown in the figure on the right, please refer to the detailed description of the SIM7070_SIM7080_SIM7090 Series_HTTP(S)_Application Note_V1.02

Command Description Return
AT+SHCONF Setting HTTPS(S) OK
AT+SHSSL Select SSL setting OK
AT+SHBOD Set Body OK
AT+SHAHEAD Add Head OK
AT+SHPARA Set HTTP(S) Para OK
AT+SHCPARA Clear HTTP(S) Para OK
AT+SHCHEAD Clear Head OK
AT+SHSTATE Query HTTP(S) connecting status OK
AT+SHREQ Set respond type OK
AT+SHREAD Read respond data OK
AT+SHDISC Disconnect HTTP(S) OK

Test TCP

For more information about the TCP, you can refer to SIM7070_SIM7080_SIM7090 Series_TCPUDP(S)_Application Note_V1.02

Note that to test TCP you need to map LAN IP and router first.

Test TCP
Command Description Return
AT+CACID Set TCP/UDP index OK
AT+CASSLCFG Set SSL parameters OK
AT+CAOPEN Open a TCP/UDP connection OK
AT+CASEND Send data OK
AT+CARECV Receive data OK
AT+CACLOSE Cose TCP/UDP connection OK
AT+CACFG Set transparent parameters OK
AT+CASWITCH Enable transparent mode Ok

Test GNSS

Test GNSS

For more information, please refer to SIM7080 Series_GNSS_Application Note_V1.00

When testing GNSS, you should set the GPS antenna in the open area. You can also use u-center software for locating.

Commands Description Return
AT+CGNSPWR Open/close GNSS power OK
AT+CGNSINF GNSS information OK
AT+CGNSCOLD GNSS cold starting OK
AT+CGNSWRAM GNSS warm starting OK
AT+CGNSHOT GNSS hot starting OK
AT+CGNSMOD GNSS workign mode setting OK
AT+CGNSXTRA Open GNSS XTRA OK
AT+CGNSCPY Copyt GNSS XTRA file OK
AT+SGNSCFG GNSS NMEA output setting OK
AT+SGNSCMD AT port output GNSS NMEA data OK

Use it with Raspberry Pi

Initialize IO and install software

The PWRKEY pin is connected to P7 (wiringPi number) of Raspberry Pi by jumper. To let the SIM7080G board work normally, you should firstly initialize the P7 pin. Download codes and run by the following commands. 

sudo apt-get update
sudo pip install RPi.GPIO
sudo apt-get install python-serial
wget -P ~/Documents/ https://files.waveshare.com/upload/4/4a/SIM7070G_Cat_M_NB_IoT_HAT_Code.tar.gz
cd ~/Documents
tar -xzf SIM7070G_Cat_M_NB_IoT_HAT_Code.tar.gz
sh ~/Documents/SIM7080G_Cat_M_NB_IoT_HAT_Code/RaspberryPi/pi_gpio_init.sh
Enable UART and hardware connection.

Open raspi-config by following commands, and choose Interfacing Options -> Serial, close login shell and open the hardware serial port. 

sudo rapsi-config
L76X GPS Module rpi serial.pngSIM7070G-Cat-M-NB-IoT-GPRS-HAT-003.jpg
Python codes

The python codes is provided for MQTT function. 

cd ~/Documents/SIM7080G_Cat_M_NB_IoT_HAT_Code/RaspberryPi/python/mqtt/
sudo python mqtt.py
SIM7070G-Cat-M-NB-IoT-GPRS-HAT-011.jpg

Use it with STM32

The demo codes provided is based on Waveshare Open103C, it is use for TCP connecting.

SIM7070G-Cat-M-NB-IoT-GPRS-HAT-012.jpg
SIM7070G-Cat-M-NB-IoT-GPRS-HAT-014.jpg

Use it with Arduino

The demo codes provide is based on Arduino UNO. The D10 (RX) and D11 (TX) is used for software serial.

SIM7070G-Cat-M-NB-IoT-GPRS-HAT-013.jpg
SIM7080G Cat-M NB-IoT HAT 015.jpg

Resources

Document

Related Resources

Tools

SIM70X0 Related

Datasheets

FAQ

Question:SIM card type?

 Answer:

Support 25mm X 15mm SIM standard card as shown in the picture below, if it is a Micro or Nano card you need to add a card holder.
SIM7070G Cat-M-FAQ.jpg

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Question:Why didn't the module Raspberry Pi return when the minicom sent the AT command?

 Answer:

SIM7070G may get stuck when it is first turned on, send AT commands several times until it returns OK.
SIM7070G Cat-M-FAQ02.png

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Question:Can SIM7070G use cellular network and GPS positioning at the same time?

 Answer:

SIM7080X and SIM7070X series cannot connect to cellular networks and GPS positioning at the same time.

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Question:Why is there no signal from SIM7070G?

 Answer:
  • Fixed NB-IOT or CAT-M Easier to get the signal:
AT+CMNB=2 //Fixed NB-IOT
AT+CMNB=1 //Fixed CAT-M
  • Fixed LTE mode can register to the network faster:
AT+CNMP=38

Please refer to the following manual for specific instructions: SIM7070_SIM7080_SIM7090_Series_AT_Command_Manual_V1.03

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Support



Technical Support

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Working Time: 9 AM - 6 PM GMT+8 (Monday to Friday)

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