Difference between revisions of "Template:SIM7600G-H 4G DTU Guid"
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==== '''hardware connection''' ==== | ==== '''hardware connection''' ==== | ||
− | [[File:SIM7600G-H 4G DTU | + | [[File:SIM7600G-H-4G-DTU-details-11.jpg|1000px]] |
==== '''NDIS dial-up Internet access''' ==== | ==== '''NDIS dial-up Internet access''' ==== |
Revision as of 04:09, 26 January 2022
quick test
Hardware test environment
Hardware preparation
The accessories required for the quick test are as follows:
- Standard configuration (after purchase, there will be the following accessories):
SIM7600G-H 4G DTU host × 1 High gain LTE main antenna (about 3 meters) × 1 High Gain Paddle LTE Auxiliary Antenna × 1 GPS antenna × 1 Serial cable male to female direct connection (about 1.5 meters) × 1 USB cable type A male to micro-B male (about 1.2 meters) × 1 12V 1A power supply × 1
- Hardware references that need to be prepared separately:
computer × 1 USB TO RS232/485/TTL × 1 4G card (or 4G-enabled mobile phone card) × 1
Hardware connection
In order to facilitate direct access to the computer test, we recommend to buy:USB TO RS232/485/TTL
The schematic diagram of DTU test hardware connection is as follows::
DTU startup and restart
Connect the hardware according to the picture above and insert the 4G card (standard SIM card).
- Power-on: After the power supply is powered on, the NET network light is on or blinks, indicating that the power is successfully started.
The serial number | Indicator/button | Functional specifications |
---|---|---|
1 | PWR | The red light is on and the power is on |
2 | TXD | Blinking blue: Data is being transmitted |
3 | RXD | Blinking blue: Data is being received |
4 | NET | The green indicator blinks, and the network is normal |
5 | LINK | User - defined LED for secondary development |
6 | RESET | Reset button |
- Restart: Press the RESET button to restart the device.
Software testing environment
The following test takes Windows 10 as an example. Before the test, install the driver, configure DTU parameters on the host computer, and then use the serial debugging assistant to perform transparent transmission test. The TCP/UDP server for transparent transmission can be a self-built server or a test server.
Driver installation
Used for the first time, you need to install SIM7600X 4G DTU driver
- Insert the USB port of 4G DTU into a Windows PC (Windows 10 as an example below)
- Open Device Manager - > Other Devices - > "SimTech,Incorporated" - > Update the driver - > Browse my computer to find the driver file - > Select a path to save the driver file based on your system - > Installation complete.
- Install all identified devices according to the above method, and the driver installation effect is as follows:
Common AT instruction
The command | Show | The return value |
---|---|---|
AT | the AT test instruction | OK |
ATE | ATE1 set echo echo ATE0 closed |
OK |
The AT + CGMI | query module manufacturers | OK |
AT + CGMM | query module type | OK |
The AT + CGSN | query product serial number | OK |
AT + CSUB | query module version and chip | OK |
The AT + CGMR | query firmware version serial number | OK |
AT + IPREX | Settings module hardware serial port baud rate | + IPREX: OK |
AT + CRESET | reset module | OK |
AT + CSQ | network signal quality query, return signal value | + CSQ: 13 of 17 OK |
AT+CPIN? | to track the status of SIM card, return to READY, said SIM card can identify normal | + CPIN: READY |
AT+COPS? | to query the current operator, will return after normal network operators information | + COPS: OK |
AT+CREG? | to track the status of network registration | + CREG: OK |
AT+CPSI? | query UE system information | |
AT + CNMP | network mode selection command: 2: Automatic 13: GSM only 38: LTE only 48: Any modes but LTE ... |
OK |
For more AT commands, see SIM7500_SIM7600 Series_AT Command manual_v1.07
GNSS control instance
- Plug in the GPS antenna, and place the receiver tag face down in the open air,. you need to wait about 1 minute before receiving the location signal.
- Detailed test instructions and screenshots are as follows:
AT+CGPS=1 // Open GPS AT+CGPSINFO // Prints GPS information to the serial port AT+CGPS=0 // Turn off GPS
4G Internet Access
Windows Internet Access
hardware connection
NDIS dial-up Internet access
- At present, when using Windows 10 operating system, you can connect to 4G DONGLE module (equipped with 4G card of China Mobile/Telecom/Unicom). After installing the driver, most computers will automatically connect to Windows 10 operating system.
- If WINdows cannot access the Internet, you need to manually start NDIS dialing, open SIM7600 AT port, and send the command:
AT$QCRMCALL=1,1+enter
At this point, the NDIS dialing takes effect, and the computer can connect to the network; if the dialing command returns an error, send the following command to set the NDIS dialing mode and then dial again:
AT+CUSBPIDSWITCH=9001,1,1
RNDIS Dial-Up Internet
In addition, dial-up Internet access using RNDIS is also possible:
- Device installed SIM card and antenna, USB connected to computer, power supply
- Refer to the above to install the USB driver
- Open the serial port assistant, find the serial port number corresponding to the AT serial port, and send the AT command to check whether it is registered on the network:
AT+CPSI?
- If you have successfully registered on the network, then send the AT command to enable USB dial-up Internet access:
AT+CUSBPIDSWITCH=9011,1,1
- Send successfully, return OK, and DTU will automatically restart.
- Observe the device manager and find some unrecognized devices, such as RNDIS (with an exclamation mark):
- Right-click on RNDIS, search for the device software prompt window, and select "Browse My Computer". Select to select Network Adapters from the list of devices.
- In the network adapter window, select Microsoft Corporation in the manufacturer list, and then select "Remote NDIS Compatible Device" in the list on the right, that is, the remote NDIS compatible device.
- Click Next and wait for the installation to complete, the RNDIS Kitl device will be installed successfully. At this point, the dial-up function setting is completed, and you can see that the PC can access the Internet through DTU.
PPP dial-up
If the NDIS or RNDIS dial-up cannot access the Internet, you can also use PPP dial-up. The operation steps are as follows:
- Network and Internet Settings -> Set up a new connection -> Connect to the Internet -> Dial up (D) -> Dial a phone number (D): *99# (others are empty by default) -> Connection -> Register -> Connected to the Internet
Raspberry Pi Raspbian Internet Operation
1.hardware connection
2. Environment configuration
The Raspberry Pi Raspbian system has built-in drivers for SIM7600X, so there is no need to install additional drivers. However, some configuration needs to be done to enable 4G networking. Common networking methods are as follows:
- Raspberry Pi RNDIS dial-up Internet access —— (the easiest operation)
- Raspberry Pi PPP dial-up ——(Operation is relatively simple)
- Raspberry Pi NDIS dial-up Internet access ——(The operation is relatively complicated)
Jetson Nano Internet Operation
1. Hardware connection
The hardware connection diagram is as follows:
2. Environment configuration
The Ubuntu system of Jetson Nano does not have the driver module file of simcom for the wwan0 network port by default, so you need to compile and install the driver module. For details, see:
- RNDIS dial-up Internet access —— (the easiest operation)
- Jetson Nano NDIS Dial-Up
Other Linux Internet Operations
1. Hardware connection
Connect SIM7600X 4G DONGLE to the hardware USB interface of the corresponding Linux platform.
2. Driver installation
First, you can use the command to check whether the system can recognize the driver normally. If the driver cannot be recognized normally, you need to install the driver manually. For details, see: