This is an example based on mbed-os cellular APIs that demonstrates a TCP or UDP echo transaction with a public echo server. Especially, BG96 operation check based Mbed OS 5.11, tested via SK Telecom in Korea

This code could be access via Cat.M1(BG96 module) of SK telecom network in Korea. Need a WIZnet BG96 board and development board. Before using this code, must be checking your modem is authorized or not from SK telecom. This code is based on Mbed OS 5.11.5.

/media/uploads/Daniel_Lee/img_8560.jpg

Tested with

  • DISCOVERY_L485VG_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_os511/

 cd mbed-os-example-cellular-BG96_os511

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

mbed-os-example-cellular


Built: Jun  4 2019, 13:45:53


[MAIN], plmn: (null)
Modem power on
Establishing connection
..

Connection Established.
TCP: connected with echo.mbedcloudtesting.com server
TCP: Sent 4 Bytes to echo.mbedcloudtesting.com
...Received from echo server 4 Bytes
...

Success. Exiting

5. Patched code

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/.

Committer:
mbed_official
Date:
Thu Nov 22 10:30:32 2018 +0000
Revision:
27:97054be1a741
Parent:
26:348eec457e58
Child:
28:232da3ce8a88
Changed to use NSAPI default values for pin, apn, plmn and credentials.

.
Commit copied from https://github.com/ARMmbed/mbed-os-example-cellular

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:4611f6cf2413 1 {
mbed_official 0:4611f6cf2413 2 "config": {
mbed_official 0:4611f6cf2413 3 "sock-type": "TCP",
mbed_official 11:23ea0907186e 4 "echo-server-hostname": {
mbed_official 11:23ea0907186e 5 "help": "Echo server host name.",
mbed_official 11:23ea0907186e 6 "value": "\"echo.mbedcloudtesting.com\""
mbed_official 11:23ea0907186e 7 },
mbed_official 11:23ea0907186e 8 "echo-server-port": {
mbed_official 11:23ea0907186e 9 "help": "Echo server port number.",
mbed_official 11:23ea0907186e 10 "value": 7
mbed_official 11:23ea0907186e 11 },
mbed_official 6:5678c0b6f74e 12 "trace-level": {
mbed_official 6:5678c0b6f74e 13 "help": "Options are TRACE_LEVEL_ERROR,TRACE_LEVEL_WARN,TRACE_LEVEL_INFO,TRACE_LEVEL_DEBUG",
mbed_official 6:5678c0b6f74e 14 "macro_name": "MBED_TRACE_MAX_LEVEL",
mbed_official 6:5678c0b6f74e 15 "value": "TRACE_LEVEL_INFO"
mbed_official 0:4611f6cf2413 16 }
mbed_official 6:5678c0b6f74e 17 },
mbed_official 0:4611f6cf2413 18 "target_overrides": {
mbed_official 0:4611f6cf2413 19 "*": {
mbed_official 6:5678c0b6f74e 20 "mbed-trace.enable": false,
mbed_official 0:4611f6cf2413 21 "lwip.ipv4-enabled": true,
mbed_official 0:4611f6cf2413 22 "lwip.ethernet-enabled": false,
mbed_official 0:4611f6cf2413 23 "lwip.ppp-enabled": true,
mbed_official 0:4611f6cf2413 24 "lwip.tcp-enabled": true,
mbed_official 0:4611f6cf2413 25 "platform.stdio-convert-newlines": true,
mbed_official 0:4611f6cf2413 26 "platform.stdio-baud-rate": 115200,
mbed_official 6:5678c0b6f74e 27 "platform.default-serial-baud-rate": 115200,
mbed_official 11:23ea0907186e 28 "platform.stdio-buffered-serial": true,
mbed_official 27:97054be1a741 29 "cellular.debug-at": false,
mbed_official 27:97054be1a741 30 "nsapi.default-cellular-plmn": 0,
mbed_official 27:97054be1a741 31 "nsapi.default-cellular-sim-pin": "\"1234\"",
mbed_official 27:97054be1a741 32 "nsapi.default-cellular-apn": 0,
mbed_official 27:97054be1a741 33 "nsapi.default-cellular-username": 0,
mbed_official 27:97054be1a741 34 "nsapi.default-cellular-password": 0
mbed_official 0:4611f6cf2413 35 }
mbed_official 0:4611f6cf2413 36 }
mbed_official 0:4611f6cf2413 37 }