Daniel Lee / Mbed OS mbed-os-example-cellular-BG96

Test code that Cat.M1 of BG96 for SK Telecom in Korea

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This code could be access via Cat.M1(BG96 module) of SK telecom network in Korea. Need a WIZnet BG96 board and development board.

If you are using Mbed OS 5.11.5 version, please see https://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular_BG96_os511/

board board

Tested with

  • NUCLEO_F429ZI
  • DISCO_L475VG_IOT01A
  • K66F
  • K64F

1. Import the application into your desktop:

 mbed import https://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular-BG96/

 cd mbed-os-example-cellular-BG96

2. Compile and program:

mbed compile -t <toolchain> -m <TARGET_BOARD>

(supported toolchains : GCC_ARM / ARM / IAR)

3. Download binary to a target board

4. Result

Tested with " "mbed-trace.enable" : true " of mbed_app.json 

[MAIN], plmn: NULL
Establishing connection
[00000001ms][INFO][CELL]: New CellularContext  (0x20003ce0)
[00000001ms][INFO][CELL]: CellularContext plmn NULL
[00000002ms][INFO][CELL]: CellularContext connect
[00000006ms][INFO][CELL]: Start connecting (timeout 1 s)
[00000016ms][DBG ][CELL]: Init => Device ready
[00000018ms][DBG ][CELL]: AT flush
[00000030ms][INFO][CELL]: Modem ready
[00000030ms][DBG ][CELL]: callback: 4096, err: 0, data: -1
[00000033ms][DBG ][CELL]: Device ready => SIM pin
[00000043ms][INFO][CELL]: RSSI -81 dBm
[00000043ms][INFO][CELL]: Setup SIM (timeout 1 s)
[00000049ms][DBG ][CELL]: AT flush
[00000057ms][INFO][CELL]: SIM is ready
[00000058ms][DBG ][CELL]: callback: 4097, err: 0, data: 0
[00000077ms][DBG ][CELL]: Found active context
[00000081ms][DBG ][CELL]: Active context found.
[00000085ms][DBG ][CELL]: Cellular already attached.
[00000088ms][DBG ][CELL]: SIM pin => Registering network
[00000092ms][INFO][CELL]: RSSI -81 dBm
[00000092ms][INFO][CELL]: Network registration (timeout 180 s)
[00000104ms][DBG ][CELL]: +CEREG: RegisteredHomeNetwork, LAC 10035, cell 233771, CATM1
[00000108ms][DBG ][CELL]: callback: 4098, err: 0, data: 1
[00000114ms][INFO][CELL]: Registering network => Attaching network
[00000125ms][INFO][CELL]: RSSI -81 dBm
[00000125ms][INFO][CELL]: Attaching network (timeout 60 s)
[00000136ms][DBG ][CELL]: callback: 4102, err: 0, data: 1
[00000204ms][INFO][CELL]: Found PDP context 7
[00000208ms][DBG ][CELL]: Found active context

Connection Established.
[00000212ms][INFO][CELL]: Socket 0 open
[00000222ms][INFO][CELL]: Socket 1 open
[00000276ms][INFO][CELL]: Socket 1 sent 43 bytes to 8.8.8.8 port 53
[00000454ms][DBG ][CELL]: AT OoB readable 1, len 0
[00000457ms][DBG ][CELL]: AT OoB done
[00000470ms][INFO][CELL]: Socket 1 recv 71 bytes from 64:ff9b::808:808 port 53
[00000475ms][INFO][CELL]: Socket 1 closed
TCP: connected with echo.mbedcloudtesting.com server
[00000855ms][INFO][CELL]: Socket 0 sent 4 bytes to 2a05:d018:21f:3800:3164:2a5c:75b3:970b port 7
TCP: Sent 4 Bytes to echo.mbedcloudtesting.com
[00001230ms][DBG ][CELL]: AT OoB readable 1, len 0
[00001232ms][DBG ][CELL]: AT OoB done
[00001237ms][INFO][CELL]: Socket 0 recv 4 bytes
[00011242ms][INFO][CELL]: Socket 0 closed
Received from echo server 4 Bytes
[00011242ms][INFO][CELL]: CellularContext disconnect()
[00011243ms][DBG ][CELL]: callback: 0, ptr: 2
[00011243ms][INFO][CELL]: cb: CellularContext disconnected


Success. Exiting

5. Patched code

https://github.com/DanielDmlee/mbed-os/commit/fd5cbf6361ca37def29ab7f997dcb7912bb369da https://github.com/DanielDmlee/mbed-os/commit/26c3bcf75988eac1ad0b1ca347726da0ad636b64

If need more information such as how to test, please look at https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-cellular/.

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