mbed-os-example-cellular-TPB23 - This is an example based on mbed-os cellular APIs…

Users » Daniel_Lee » Code » mbed-os-example-cellular-TPB23

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

Need to check CodeZoo's s hardware a guide.
Need a CodeZoo's NBIoT board and development board.
Board picture & Jumper configure

462 320 320

And also can use with mbed application shield, as shown below.

320

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

main.cpp@0:4611f6cf2413, 2018-03-08 (annotated)

Committer:: mbed_official
Date:: Thu Mar 08 17:31:37 2018 +0000
Revision:: 0:4611f6cf2413
Child:: 2:0f644d6045cf

Initial commit.

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

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	0:4611f6cf2413	1	/*
mbed_official	0:4611f6cf2413	2	* Copyright (c) 2017 ARM Limited. All rights reserved.
mbed_official	0:4611f6cf2413	3	* SPDX-License-Identifier: Apache-2.0
mbed_official	0:4611f6cf2413	4	* Licensed under the Apache License, Version 2.0 (the License); you may
mbed_official	0:4611f6cf2413	5	* not use this file except in compliance with the License.
mbed_official	0:4611f6cf2413	6	* You may obtain a copy of the License at
mbed_official	0:4611f6cf2413	7	*
mbed_official	0:4611f6cf2413	8	* http://www.apache.org/licenses/LICENSE-2.0
mbed_official	0:4611f6cf2413	9	*
mbed_official	0:4611f6cf2413	10	* Unless required by applicable law or agreed to in writing, software
mbed_official	0:4611f6cf2413	11	* distributed under the License is distributed on an AS IS BASIS, WITHOUT
mbed_official	0:4611f6cf2413	12	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official	0:4611f6cf2413	13	* See the License for the specific language governing permissions and
mbed_official	0:4611f6cf2413	14	* limitations under the License.
mbed_official	0:4611f6cf2413	15	*/
mbed_official	0:4611f6cf2413	16
mbed_official	0:4611f6cf2413	17	#include "mbed.h"
mbed_official	0:4611f6cf2413	18	#include "common_functions.h"
mbed_official	0:4611f6cf2413	19	#include "UDPSocket.h"
mbed_official	0:4611f6cf2413	20	#include "OnboardCellularInterface.h"
mbed_official	0:4611f6cf2413	21
mbed_official	0:4611f6cf2413	22	#define UDP 0
mbed_official	0:4611f6cf2413	23	#define TCP 1
mbed_official	0:4611f6cf2413	24
mbed_official	0:4611f6cf2413	25	// SIM pin code goes here
mbed_official	0:4611f6cf2413	26	#ifndef MBED_CONF_APP_SIM_PIN_CODE
mbed_official	0:4611f6cf2413	27	# define MBED_CONF_APP_SIM_PIN_CODE "1234"
mbed_official	0:4611f6cf2413	28	#endif
mbed_official	0:4611f6cf2413	29
mbed_official	0:4611f6cf2413	30	#ifndef MBED_CONF_APP_APN
mbed_official	0:4611f6cf2413	31	# define MBED_CONF_APP_APN "internet"
mbed_official	0:4611f6cf2413	32	#endif
mbed_official	0:4611f6cf2413	33	#ifndef MBED_CONF_APP_USERNAME
mbed_official	0:4611f6cf2413	34	# define MBED_CONF_APP_USERNAME NULL
mbed_official	0:4611f6cf2413	35	#endif
mbed_official	0:4611f6cf2413	36	#ifndef MBED_CONF_APP_PASSWORD
mbed_official	0:4611f6cf2413	37	# define MBED_CONF_APP_PASSWORD NULL
mbed_official	0:4611f6cf2413	38	#endif
mbed_official	0:4611f6cf2413	39
mbed_official	0:4611f6cf2413	40	// Number of retries /
mbed_official	0:4611f6cf2413	41	#define RETRY_COUNT 3
mbed_official	0:4611f6cf2413	42
mbed_official	0:4611f6cf2413	43
mbed_official	0:4611f6cf2413	44
mbed_official	0:4611f6cf2413	45	// CellularInterface object
mbed_official	0:4611f6cf2413	46	OnboardCellularInterface iface;
mbed_official	0:4611f6cf2413	47
mbed_official	0:4611f6cf2413	48	// Echo server hostname
mbed_official	0:4611f6cf2413	49	const char *host_name = "echo.u-blox.com";
mbed_official	0:4611f6cf2413	50
mbed_official	0:4611f6cf2413	51	// Echo server port (same for TCP and UDP)
mbed_official	0:4611f6cf2413	52	const int port = 7;
mbed_official	0:4611f6cf2413	53
mbed_official	0:4611f6cf2413	54	Mutex PrintMutex;
mbed_official	0:4611f6cf2413	55	Thread dot_thread;
mbed_official	0:4611f6cf2413	56
mbed_official	0:4611f6cf2413	57	#define PRINT_TEXT_LENGTH 128
mbed_official	0:4611f6cf2413	58	char print_text[PRINT_TEXT_LENGTH];
mbed_official	0:4611f6cf2413	59	void print_function(const char *input_string)
mbed_official	0:4611f6cf2413	60	{
mbed_official	0:4611f6cf2413	61	PrintMutex.lock();
mbed_official	0:4611f6cf2413	62	printf("%s", input_string);
mbed_official	0:4611f6cf2413	63	fflush(NULL);
mbed_official	0:4611f6cf2413	64	PrintMutex.unlock();
mbed_official	0:4611f6cf2413	65	}
mbed_official	0:4611f6cf2413	66
mbed_official	0:4611f6cf2413	67	void dot_event()
mbed_official	0:4611f6cf2413	68	{
mbed_official	0:4611f6cf2413	69
mbed_official	0:4611f6cf2413	70	while (true) {
mbed_official	0:4611f6cf2413	71	wait(4);
mbed_official	0:4611f6cf2413	72	if (!iface.is_connected()) {
mbed_official	0:4611f6cf2413	73	print_function(".");
mbed_official	0:4611f6cf2413	74	} else {
mbed_official	0:4611f6cf2413	75	break;
mbed_official	0:4611f6cf2413	76	}
mbed_official	0:4611f6cf2413	77	}
mbed_official	0:4611f6cf2413	78
mbed_official	0:4611f6cf2413	79	}
mbed_official	0:4611f6cf2413	80
mbed_official	0:4611f6cf2413	81
mbed_official	0:4611f6cf2413	82	/**
mbed_official	0:4611f6cf2413	83	* Connects to the Cellular Network
mbed_official	0:4611f6cf2413	84	*/
mbed_official	0:4611f6cf2413	85	nsapi_error_t do_connect()
mbed_official	0:4611f6cf2413	86	{
mbed_official	0:4611f6cf2413	87	nsapi_error_t retcode;
mbed_official	0:4611f6cf2413	88	uint8_t retry_counter = 0;
mbed_official	0:4611f6cf2413	89
mbed_official	0:4611f6cf2413	90	while (!iface.is_connected()) {
mbed_official	0:4611f6cf2413	91
mbed_official	0:4611f6cf2413	92	retcode = iface.connect();
mbed_official	0:4611f6cf2413	93	if (retcode == NSAPI_ERROR_AUTH_FAILURE) {
mbed_official	0:4611f6cf2413	94	print_function("\n\nAuthentication Failure. Exiting application\n");
mbed_official	0:4611f6cf2413	95	return retcode;
mbed_official	0:4611f6cf2413	96	} else if (retcode != NSAPI_ERROR_OK) {
mbed_official	0:4611f6cf2413	97	snprintf(print_text, PRINT_TEXT_LENGTH, "\n\nCouldn't connect: %d, will retry\n", retcode);
mbed_official	0:4611f6cf2413	98	print_function(print_text);
mbed_official	0:4611f6cf2413	99	retry_counter++;
mbed_official	0:4611f6cf2413	100	continue;
mbed_official	0:4611f6cf2413	101	} else if (retcode != NSAPI_ERROR_OK && retry_counter > RETRY_COUNT) {
mbed_official	0:4611f6cf2413	102	snprintf(print_text, PRINT_TEXT_LENGTH, "\n\nFatal connection failure: %d\n", retcode);
mbed_official	0:4611f6cf2413	103	print_function(print_text);
mbed_official	0:4611f6cf2413	104	return retcode;
mbed_official	0:4611f6cf2413	105	}
mbed_official	0:4611f6cf2413	106
mbed_official	0:4611f6cf2413	107	break;
mbed_official	0:4611f6cf2413	108	}
mbed_official	0:4611f6cf2413	109
mbed_official	0:4611f6cf2413	110	print_function("\n\nConnection Established.\n");
mbed_official	0:4611f6cf2413	111
mbed_official	0:4611f6cf2413	112	return NSAPI_ERROR_OK;
mbed_official	0:4611f6cf2413	113	}
mbed_official	0:4611f6cf2413	114
mbed_official	0:4611f6cf2413	115	/**
mbed_official	0:4611f6cf2413	116	* Opens a UDP or a TCP socket with the given echo server and performs an echo
mbed_official	0:4611f6cf2413	117	* transaction retrieving current.
mbed_official	0:4611f6cf2413	118	*/
mbed_official	0:4611f6cf2413	119	nsapi_error_t test_send_recv()
mbed_official	0:4611f6cf2413	120	{
mbed_official	0:4611f6cf2413	121	nsapi_size_or_error_t retcode;
mbed_official	0:4611f6cf2413	122	#if MBED_CONF_APP_SOCK_TYPE == TCP
mbed_official	0:4611f6cf2413	123	TCPSocket sock;
mbed_official	0:4611f6cf2413	124	#else
mbed_official	0:4611f6cf2413	125	UDPSocket sock;
mbed_official	0:4611f6cf2413	126	#endif
mbed_official	0:4611f6cf2413	127
mbed_official	0:4611f6cf2413	128	retcode = sock.open(&iface);
mbed_official	0:4611f6cf2413	129	if (retcode != NSAPI_ERROR_OK) {
mbed_official	0:4611f6cf2413	130	snprintf(print_text, PRINT_TEXT_LENGTH, "UDPSocket.open() fails, code: %d\n", retcode);
mbed_official	0:4611f6cf2413	131	print_function(print_text);
mbed_official	0:4611f6cf2413	132	return -1;
mbed_official	0:4611f6cf2413	133	}
mbed_official	0:4611f6cf2413	134
mbed_official	0:4611f6cf2413	135	SocketAddress sock_addr;
mbed_official	0:4611f6cf2413	136	retcode = iface.gethostbyname(host_name, &sock_addr);
mbed_official	0:4611f6cf2413	137	if (retcode != NSAPI_ERROR_OK) {
mbed_official	0:4611f6cf2413	138	snprintf(print_text, PRINT_TEXT_LENGTH, "Couldn't resolve remote host: %s, code: %d\n", host_name,
mbed_official	0:4611f6cf2413	139	retcode);
mbed_official	0:4611f6cf2413	140	print_function(print_text);
mbed_official	0:4611f6cf2413	141	return -1;
mbed_official	0:4611f6cf2413	142	}
mbed_official	0:4611f6cf2413	143
mbed_official	0:4611f6cf2413	144	sock_addr.set_port(port);
mbed_official	0:4611f6cf2413	145
mbed_official	0:4611f6cf2413	146	sock.set_timeout(15000);
mbed_official	0:4611f6cf2413	147	int n = 0;
mbed_official	0:4611f6cf2413	148	const char *echo_string = "TEST";
mbed_official	0:4611f6cf2413	149	char recv_buf[4];
mbed_official	0:4611f6cf2413	150	#if MBED_CONF_APP_SOCK_TYPE == TCP
mbed_official	0:4611f6cf2413	151	retcode = sock.connect(sock_addr);
mbed_official	0:4611f6cf2413	152	if (retcode < 0) {
mbed_official	0:4611f6cf2413	153	snprintf(print_text, PRINT_TEXT_LENGTH, "TCPSocket.connect() fails, code: %d\n", retcode);
mbed_official	0:4611f6cf2413	154	print_function(print_text);
mbed_official	0:4611f6cf2413	155	return -1;
mbed_official	0:4611f6cf2413	156	} else {
mbed_official	0:4611f6cf2413	157	snprintf(print_text, PRINT_TEXT_LENGTH, "TCP: connected with %s server\n", host_name);
mbed_official	0:4611f6cf2413	158	print_function(print_text);
mbed_official	0:4611f6cf2413	159	}
mbed_official	0:4611f6cf2413	160	retcode = sock.send((void*) echo_string, sizeof(echo_string));
mbed_official	0:4611f6cf2413	161	if (retcode < 0) {
mbed_official	0:4611f6cf2413	162	snprintf(print_text, PRINT_TEXT_LENGTH, "TCPSocket.send() fails, code: %d\n", retcode);
mbed_official	0:4611f6cf2413	163	print_function(print_text);
mbed_official	0:4611f6cf2413	164	return -1;
mbed_official	0:4611f6cf2413	165	} else {
mbed_official	0:4611f6cf2413	166	snprintf(print_text, PRINT_TEXT_LENGTH, "TCP: Sent %d Bytes to %s\n", retcode, host_name);
mbed_official	0:4611f6cf2413	167	print_function(print_text);
mbed_official	0:4611f6cf2413	168	}
mbed_official	0:4611f6cf2413	169
mbed_official	0:4611f6cf2413	170	n = sock.recv((void*) recv_buf, sizeof(recv_buf));
mbed_official	0:4611f6cf2413	171	#else
mbed_official	0:4611f6cf2413	172
mbed_official	0:4611f6cf2413	173	retcode = sock.sendto(sock_addr, (void*) echo_string, sizeof(echo_string));
mbed_official	0:4611f6cf2413	174	if (retcode < 0) {
mbed_official	0:4611f6cf2413	175	snprintf(print_text, PRINT_TEXT_LENGTH, "UDPSocket.sendto() fails, code: %d\n", retcode);
mbed_official	0:4611f6cf2413	176	print_function(print_text);
mbed_official	0:4611f6cf2413	177	return -1;
mbed_official	0:4611f6cf2413	178	} else {
mbed_official	0:4611f6cf2413	179	snprintf(print_text, PRINT_TEXT_LENGTH, "UDP: Sent %d Bytes to %s\n", retcode, host_name);
mbed_official	0:4611f6cf2413	180	print_function(print_text);
mbed_official	0:4611f6cf2413	181	}
mbed_official	0:4611f6cf2413	182
mbed_official	0:4611f6cf2413	183	n = sock.recvfrom(&sock_addr, (void*) recv_buf, sizeof(recv_buf));
mbed_official	0:4611f6cf2413	184	#endif
mbed_official	0:4611f6cf2413	185
mbed_official	0:4611f6cf2413	186	sock.close();
mbed_official	0:4611f6cf2413	187
mbed_official	0:4611f6cf2413	188	if (n > 0) {
mbed_official	0:4611f6cf2413	189	snprintf(print_text, PRINT_TEXT_LENGTH, "Received from echo server %d Bytes\n", n);
mbed_official	0:4611f6cf2413	190	print_function(print_text);
mbed_official	0:4611f6cf2413	191	return 0;
mbed_official	0:4611f6cf2413	192	}
mbed_official	0:4611f6cf2413	193
mbed_official	0:4611f6cf2413	194	return -1;
mbed_official	0:4611f6cf2413	195	}
mbed_official	0:4611f6cf2413	196
mbed_official	0:4611f6cf2413	197	int main()
mbed_official	0:4611f6cf2413	198	{
mbed_official	0:4611f6cf2413	199
mbed_official	0:4611f6cf2413	200	iface.modem_debug_on(MBED_CONF_APP_MODEM_TRACE);
mbed_official	0:4611f6cf2413	201	/* Set Pin code for SIM card */
mbed_official	0:4611f6cf2413	202	iface.set_sim_pin(MBED_CONF_APP_SIM_PIN_CODE);
mbed_official	0:4611f6cf2413	203
mbed_official	0:4611f6cf2413	204	/* Set network credentials here, e.g., APN*/
mbed_official	0:4611f6cf2413	205	iface.set_credentials(MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD);
mbed_official	0:4611f6cf2413	206
mbed_official	0:4611f6cf2413	207	print_function("\n\nmbed-os-example-cellular\n");
mbed_official	0:4611f6cf2413	208	print_function("Establishing connection ");
mbed_official	0:4611f6cf2413	209	dot_thread.start(dot_event);
mbed_official	0:4611f6cf2413	210
mbed_official	0:4611f6cf2413	211	/* Attempt to connect to a cellular network */
mbed_official	0:4611f6cf2413	212	if (do_connect() == NSAPI_ERROR_OK) {
mbed_official	0:4611f6cf2413	213	nsapi_error_t retcode = test_send_recv();
mbed_official	0:4611f6cf2413	214	if (retcode == NSAPI_ERROR_OK) {
mbed_official	0:4611f6cf2413	215	print_function("\n\nSuccess. Exiting \n\n");
mbed_official	0:4611f6cf2413	216	return 0;
mbed_official	0:4611f6cf2413	217	}
mbed_official	0:4611f6cf2413	218	}
mbed_official	0:4611f6cf2413	219
mbed_official	0:4611f6cf2413	220	print_function("\n\nFailure. Exiting \n\n");
mbed_official	0:4611f6cf2413	221	return -1;
mbed_official	0:4611f6cf2413	222	}
mbed_official	0:4611f6cf2413	223	// EOF

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Mbed OS support:	Mbed OS
Created:	07 Aug 2019
Imports:	34
Forks:	0
Commits:	48
Dependents:	0
Dependencies:	0
Followers:	1

main.cpp@0:4611f6cf2413, 2018-03-08 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning