PCI7600G LTE module setting

SIMCom SIM7600G MINI PCIE LTE Module driver setting under Yocto 2.5

Procedure

Step 1. Installing USB serial driver

Essential Yocto Project host packages:

    -    < > USB Serial Converter Support --- >
    -    [ ] USB Generic Serial Driver
    -    < > USB driver for GSM and CDMA modems

    +    <*> USB Serial Converter Support --- >
    +    [*] USB Generic Serial Driver
    +    <*> USB driver for GSM and CDMA modems

Revise the content in kernel/drivers/usb/serial/option.c

    /* SIM7600 */
    #define SIMCOM_SIM7600_VID 0x1E0E
    #define SIMCOM_SIM7600_PID 0x9001

Add the content below to option-ids list

{ USB_DEVICE(SIMCOM_SIM7600_VID, SIMCOM_SIM7600_PID)}, /*SIM7600 */ 

 Add the content below to option_probe

    /* SIM7600 */
    if (serial->dev->descriptor.idVendor == SIMCOM_SIM7600_VID && 
    serial->dev->descriptor.idProduct == SIMCOM_SIM7600_PID &&
    serial->interface->cur_altsetting->desc.bInterfaceNumber == 5 )
    return -ENODEV; 

Execute the command below and there will have 5 different devices:

ttyUSB0 ttyUSB1 ttyUSB2 ttyUSB3 ttyUSB4

-C compile linux-imx && bitbake fsl-image-qt5-validation-imx 

Step 2. Mounting the sim7600g.ko driver

1. Unzip the sim7600g.zip(https://ftp.icop.com.tw/share/iDBN_fy-) to /BSP/source/poke/recipe-core/
2. Edit BSP/source/poky/meta-poky/conf/layer.conf
3. Add MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS += “sim7600g”
4. Execute bitbake -C compile linux-imx && bitbake fsl-image-qt5-validation-imx
5. After the command execute, you will see wwan0 from command ifconfig -a

Step 3. Testing SIM7600G (Will return an ok if succeed.

1. Plugin SIM7600G before booting up the board.
2. Open the terminal and enter minicom -d /dev/ttyUSB2.
3. Enter at (Ensuring the AT testing command); it will return an ok if it’s working.
4. Enter at+cpin? (Checking the status of the SIM card); it will return a “READY” if it’s working, and if return +CME ERROR: SIM not inserted means the SIM card is not plugged in.
5. Enter at+csq (Checking the strength of the signal, and the antenna should be installed on the MAIN of SIM7600G); If it returns +CSQ: 0~31.99 means it’s normal, and 99.99 means it’s an error.
6. Enter at+cops? (Checking the telecom)
7. Enter at+cpsi? ( Checking UE system data )
8. Enter at+cmgs=“+8869xxxxxxxx”(Phone number), and it will return >; enter some content like “testing” and press ctrl+z to send it out. You will receive the message on your phone.
9. Using a phone and dial the number the sim card you used in SIM7600G, and if the minicom shows RING means the testing passed.
10. Open another terminal and enter echo “at\$qcrmcall=1,1” > /dev/ttyUSB3, and the minicom will return $QCRMCALL：1，V4
11. Enter ifconfig wwan0 up
12. Enter udhcpc -i wwan0
13. Enter ping 8.8.8.8 -c 5 to test 4G internet.