Daniel Lee / Mbed OS mbed-os-example-cellular-TPB23

This is an example based on mbed-os cellular APIs that demonstrates a TCP or UDP echo transaction with a public echo server. Included TPB23 NB-IoT module which is can use LGU+ in Korea.

This example is showing how to use the NB-IoT(SECOM TPB23 module) of LGU plus network in Korea. The NB-IoT module' seller provided a document on how to start based on Mbed OS 5.11. (Created by CodeZoo) This guide has been supported to the latest os version which included 5.12 ~ 5.15.

  • if you need specific version of Mbed OS, please revision of TPB23_Driver and check it out.
  • Pelion ready example code is here!

Requirement

462 320 320

320

Tested with

1. Import the application into your desktop 

mbed import http://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular-TPB23/

cd mbed-os-example-cellular-TPB23

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: Aug  7 2019, 06:10:47


[MAIN], plmn: NULL
Establishing connection
[00000001ms][INFO][CELL]: New CellularContext  (20000a08)
[00000002ms][INFO][CELL]: CellularContext plmn NULL
[00000003ms][INFO][CELL]: CellularContext connect
[00000036ms][INFO][CELL]: RSSI -69 dBm
[00000036ms][INFO][CELL]: Start connecting (timeout 1 s)
[00000087ms][INFO][CELL]: RSSI -69 dBm
[00000116ms][INFO][CELL]: Modem ready
[00000146ms][INFO][CELL]: RSSI -69 dBm
[00000146ms][INFO][CELL]: Setup SIM (timeout 1 s)
[00001233ms][INFO][CELL]: Looked up APN internet
[00001362ms][ERR ][CELL]: AT error code 50
[00001362ms][WARN][CELL]: Packet domain event reporting set failed!
[00001393ms][INFO][CELL]: RSSI -65 dBm
[00001393ms][INFO][CELL]: Network registration (timeout 180 s)
[00001443ms][INFO][CELL]: Registering network => Attaching network
[00001473ms][INFO][CELL]: RSSI -65 dBm
[00001473ms][INFO][CELL]: Attaching network (timeout 60 s)
[00001601ms][INFO][CELL]: Found PDP context 1
[00001649ms][INFO][CELL]: Activate PDP context 1


Connection Established.
[00001671ms][INFO][CELL]: Socket 0 open
[00001707ms][INFO][CELL]: Socket 1 open
[00001748ms][INFO][CELL]: Socket create id: 1
[00001883ms][INFO][CELL]: Socket 1 sent 43 bytes to 8.8.8.8 port 53
[00004311ms][INFO][CELL]: Socket 1 recv 59 bytes from 8.8.8.8 port 53
[00004331ms][INFO][CELL]: Close socket: 1 error: 0
[00004331ms][INFO][CELL]: Socket 1 closed
[00004373ms][INFO][CELL]: Socket create id: 1
TCP: connected with echo.mbedcloudtesting.com server
[00004448ms][INFO][CELL]: Socket 0 sent 4 bytes to 52.215.34.155 port 7
TCP: Sent 4 Bytes to echo.mbedcloudtesting.com
[00007560ms][INFO][CELL]: Socket 0 recv 4 bytes
[00007580ms][INFO][CELL]: Close socket: 1 error: 0
[00007580ms][INFO][CELL]: Socket 0 closed
Received from echo server 4 Bytes
[00007581ms][INFO][CELL]: CellularContext disconnect()
[00007630ms][INFO][CELL]: cb: CellularContext disconnected


Success. Exiting

Files at this revision

API Documentation at this revision

Revision 42:cab443dff75e, committed 2019-05-29

Comitter:
mbed_official
Date:
Wed May 29 08:01:56 2019 +0100
Parent:
41:1f13c9a6ee23
Child:
43:fef5b8b23c60
Commit message:
Merge pull request #143 from statropy/statropy-patch-1

Use the actual length of the test string payload
.
Commit copied from https://github.com/ARMmbed/mbed-os-example-cellular

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Thu May 16 09:02:09 2019 +0100
+++ b/main.cpp	Wed May 29 08:01:56 2019 +0100
@@ -173,7 +173,7 @@
     sock.set_timeout(15000);
 
 #if MBED_CONF_APP_SOCK_TYPE == NONIP
-    retcode = sock.send((void*) echo_string, sizeof(echo_string));
+    retcode = sock.send((void*) echo_string, strlen(echo_string));
     if (retcode < 0) {
         print_function("CellularNonIPSocket.send() fails, code: %d\n", retcode);
         return -1;
@@ -202,7 +202,7 @@
     } else {
         print_function("TCP: connected with %s server\n", host_name);
     }
-    retcode = sock.send((void*) echo_string, sizeof(echo_string));
+    retcode = sock.send((void*) echo_string, strlen(echo_string));
     if (retcode < 0) {
         print_function("TCPSocket.send() fails, code: %d\n", retcode);
         return -1;
@@ -213,7 +213,7 @@
     n = sock.recv((void*) recv_buf, sizeof(recv_buf));
 #else
 
-    retcode = sock.sendto(sock_addr, (void*) echo_string, sizeof(echo_string));
+    retcode = sock.sendto(sock_addr, (void*) echo_string, strlen(echo_string));
     if (retcode < 0) {
         print_function("UDPSocket.sendto() fails, code: %d\n", retcode);
         return -1;