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
- Need to check CodeZoo's s hardware a guide.
- Need a CodeZoo's NBIoT board and development board.
- Board picture & Jumper configure
- And also can use with mbed application shield, as shown below.
Tested with
- DISCO_L475VG_IOT01A - If you are in Korea, can buy here !
- NUCLEO_F429ZI - If you are in Korea, can buy here !
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
Diff: main.cpp
- Revision:
- 40:c46ee5b71843
- Parent:
- 36:6294a71c9e9e
- Child:
- 42:cab443dff75e
diff -r e57f130d65bd -r c46ee5b71843 main.cpp --- a/main.cpp Tue Apr 30 11:02:03 2019 +0100 +++ b/main.cpp Mon May 06 09:02:01 2019 +0100 @@ -16,11 +16,14 @@ #include "mbed.h" #include "common_functions.h" +#include "CellularNonIPSocket.h" +#include "CellularDevice.h" #include "UDPSocket.h" #include "CellularLog.h" #define UDP 0 #define TCP 1 +#define NONIP 2 // Number of retries / #define RETRY_COUNT 3 @@ -129,28 +132,59 @@ } /** - * Opens a UDP or a TCP socket with the given echo server and performs an echo - * transaction retrieving current. + * Opens: + * - UDP or TCP socket with the given echo server and performs an echo + * transaction retrieving current. + * - Cellular Non-IP socket for which the data delivery path is decided + * by network's control plane CIoT optimisation setup, for the given APN. */ nsapi_error_t test_send_recv() { nsapi_size_or_error_t retcode; #if MBED_CONF_APP_SOCK_TYPE == TCP TCPSocket sock; -#else +#elif MBED_CONF_APP_SOCK_TYPE == UDP UDPSocket sock; +#elif MBED_CONF_APP_SOCK_TYPE == NONIP + CellularNonIPSocket sock; #endif +#if MBED_CONF_APP_SOCK_TYPE == NONIP + retcode = sock.open((CellularContext*)iface); +#else retcode = sock.open(iface); +#endif + if (retcode != NSAPI_ERROR_OK) { #if MBED_CONF_APP_SOCK_TYPE == TCP print_function("TCPSocket.open() fails, code: %d\n", retcode); -#else +#elif MBED_CONF_APP_SOCK_TYPE == UDP print_function("UDPSocket.open() fails, code: %d\n", retcode); +#elif MBED_CONF_APP_SOCK_TYPE == NONIP + print_function("CellularNonIPSocket.open() fails, code: %d\n", retcode); #endif return -1; } + int n = 0; + const char *echo_string = "TEST"; + char recv_buf[4]; + + sock.set_timeout(15000); + +#if MBED_CONF_APP_SOCK_TYPE == NONIP + retcode = sock.send((void*) echo_string, sizeof(echo_string)); + if (retcode < 0) { + print_function("CellularNonIPSocket.send() fails, code: %d\n", retcode); + return -1; + } else { + print_function("CellularNonIPSocket: Sent %d Bytes\n", retcode); + } + + n = sock.recv((void*) recv_buf, sizeof(recv_buf)); + +#else + SocketAddress sock_addr; retcode = iface->gethostbyname(host_name, &sock_addr); if (retcode != NSAPI_ERROR_OK) { @@ -160,10 +194,6 @@ sock_addr.set_port(port); - sock.set_timeout(15000); - int n = 0; - const char *echo_string = "TEST"; - char recv_buf[4]; #if MBED_CONF_APP_SOCK_TYPE == TCP retcode = sock.connect(sock_addr); if (retcode < 0) { @@ -193,6 +223,7 @@ n = sock.recvfrom(&sock_addr, (void*) recv_buf, sizeof(recv_buf)); #endif +#endif sock.close(); @@ -219,10 +250,17 @@ dot_thread.start(dot_event); #endif // #if MBED_CONF_MBED_TRACE_ENABLE - // sim pin, apn, credentials and possible plmn are taken atuomtically from json when using get_default_instance() - iface = NetworkInterface::get_default_instance(); +#if MBED_CONF_APP_SOCK_TYPE == NONIP + iface = CellularContext::get_default_nonip_instance(); +#else + iface = CellularContext::get_default_instance(); +#endif + MBED_ASSERT(iface); + // sim pin, apn, credentials and possible plmn are taken automatically from json when using NetworkInterface::set_default_parameters() + iface->set_default_parameters(); + nsapi_error_t retcode = NSAPI_ERROR_NO_CONNECTION; /* Attempt to connect to a cellular network */