Daniel Lee / Mbed OS mbed-os-example-cellular_BG96_os511

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/.

Diff: main.cpp

Revision:
21:e356e039f917
Parent:
13:4bea5334b419
Child:
26:348eec457e58
--- a/main.cpp	Fri Sep 14 12:30:21 2018 +0100
+++ b/main.cpp	Thu Sep 27 13:30:25 2018 +0100
@@ -158,7 +158,11 @@
 
     retcode = sock.open(iface);
     if (retcode != NSAPI_ERROR_OK) {
+#if MBED_CONF_APP_SOCK_TYPE == TCP
+        print_function("TCPSocket.open() fails, code: %d\n", retcode);
+#else
         print_function("UDPSocket.open() fails, code: %d\n", retcode);
+#endif
         return -1;
     }