SIM7070G Cat-M/NB-IoT/GPRS HAT

SIM7070G Cat-M/NB-IoT/GPRS HAT Compatible with Raspberry Pi 2B/3B/Zero/Zero W

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Primary Attribute Category: Modules, NB-IoT, Raspberry Pi {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

Website International: Waveshare website Chinese: 官方中文站点

Onboard Interfaces RPi UART

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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
• Generally, the SIM7070G will be recognized by a PC with three USB ports. To update the driver, you can right-click the USB port and update it with the driver downloaded
• AT Port COM31 is the one used as the communication port. We will use it to test the SIM7080G board.

Note: The SIM7070G modules support global networks. The time to log in to the network is different among different areas. To use the SIM7070G, you should first confirm that LTE-M or LTE-NB networks are available in the local area.

Test network

For more information about the AT commands, you can refer to SIM7080 Series_AT Command Manual_V1.01

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

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/4/4b/SIM7070G_Cat_M_NB_IoT_HAT_Code.tar.gz
cd ~/Documents
tar -xzf SIM7070G_Cat_M_NB_IoT_HAT_Code.tar.gz
sh ~/Documents/SIM7070G_Cat_M_NB_IoT_HAT_Code/RaspberryPi/pi_gpio_init.sh
sudo pip install RPi.GPIO
sudo apt-get install python-serial

Enable UART and hardware connection

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

sudo rapsi-config

Python codes

The python codes is provided for MQTT function

cd ~/Documents/SIM7070G_Cat_M_NB_IoT_HAT_Code/RaspberryPipython/mqtt
sudo python mqtt.py

Use it with STM32

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

Use it with Arduino

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

Resources

Document

• Schematic
• Source code
• SIM7080 Driver

Related Resources

• Pisugar case

Tools

• sscom
• SIMCom GPS
• NetAssist

SIM70X0 Related

Datasheets

• File:SIM7080 Series_AT Command Manual_V1.02.pdf
• File:SIM7070_SIM7080_SIM7090_Series_AT_Command_Manual_V1.03.pdf
• File:SIM7080G_SPEC_201911.pdf
• File:SIM7080G Hardware Design_V1.03.pdf
• File:SIM7080 Series_CoAP_Application Note_V1.01.pdf
• File:SIM7080 Series_CTBURST_Application Note_V1.01.pdf
• File:SIM7080 Series_Email_Application Note_V1.01.pdf
• File:SIM7080 Series_FOTA_Application Note_V1.01.pdf
• File:SIM7080 Series_FS_Application Note_V1.01.pdf
• File:SIM7080 Series_FTP_Application Note_V1.01.pdf
• File:SIM7080 Series_GNSS_Application Note_V1.01.pdf
• File:SIM7080 Series_HTTP(S)_Application Note_V1.01.pdf
• File:SIM7080 Series_LBS_Application Note_V1.00.pdf
• File:SIM7080 Series_Linux_Application Note_V1.00.pdf
• File:SIM7080 Series_Low Power Mode_Application Note_V1.01.pdf
• File:SIM7080 Series_LwM2M_Application Note_V1.01.pdf
• File:SIM7080 Series_MQTT(S)_Application Note_V1.01.pdf
• File:SIM7080 Series_PING_Application Note_V1.01.pdf
• File:SIM7080 Series_SAT_Application Note_V1.01.pdf
• File:SIM7080 Series_TCPUDP(S)_Application Note_V1.01.pdf
• More...

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.

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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.

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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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