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 Mar 08 17:31:37 2018 +0000
Revision:
0:4611f6cf2413
Child:
6:5678c0b6f74e
Initial commit.
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 0:4611f6cf2413 4 "modem_trace": {
mbed_official 0:4611f6cf2413 5 "help": "Turns AT command trace on/off from the cellular modem, defaults to off",
mbed_official 0:4611f6cf2413 6 "value": false
mbed_official 0:4611f6cf2413 7 },
mbed_official 0:4611f6cf2413 8 "sim-pin-code": {
mbed_official 0:4611f6cf2413 9 "help": "SIM PIN code",
mbed_official 0:4611f6cf2413 10 "value": "\"1234\""
mbed_official 0:4611f6cf2413 11 },
mbed_official 0:4611f6cf2413 12 "apn": {
mbed_official 0:4611f6cf2413 13 "help": "The APN string to use for this SIM/network, set to 0 if none",
mbed_official 0:4611f6cf2413 14 "value": "\"internet\""
mbed_official 0:4611f6cf2413 15 },
mbed_official 0:4611f6cf2413 16 "username": {
mbed_official 0:4611f6cf2413 17 "help": "The user name string to use for this APN, set to zero if none",
mbed_official 0:4611f6cf2413 18 "value": 0
mbed_official 0:4611f6cf2413 19 },
mbed_official 0:4611f6cf2413 20 "password": {
mbed_official 0:4611f6cf2413 21 "help": "The password string to use for this APN, set to 0 if none",
mbed_official 0:4611f6cf2413 22 "value": 0
mbed_official 0:4611f6cf2413 23 }
mbed_official 0:4611f6cf2413 24 },
mbed_official 0:4611f6cf2413 25 "target_overrides": {
mbed_official 0:4611f6cf2413 26 "*": {
mbed_official 0:4611f6cf2413 27 "target.features_add": ["LWIP", "COMMON_PAL"],
mbed_official 0:4611f6cf2413 28 "lwip.ipv4-enabled": true,
mbed_official 0:4611f6cf2413 29 "lwip.ethernet-enabled": false,
mbed_official 0:4611f6cf2413 30 "lwip.ppp-enabled": true,
mbed_official 0:4611f6cf2413 31 "lwip.tcp-enabled": true,
mbed_official 0:4611f6cf2413 32 "platform.stdio-convert-newlines": true,
mbed_official 0:4611f6cf2413 33 "platform.stdio-baud-rate": 115200,
mbed_official 0:4611f6cf2413 34 "platform.default-serial-baud-rate": 115200
mbed_official 0:4611f6cf2413 35 }
mbed_official 0:4611f6cf2413 36 }
mbed_official 0:4611f6cf2413 37 }