CodeZoo co., ltd / Mbed OS mbed-os-example-cellular-LGUPlus

This is an example based on mbed-os cellular APIs that demonstrates a TCP or UDP echo transaction with a public echo server.

main.cpp@9:35a1fad017ca, 2018-06-04 (annotated)

Committer:
mbed_official
Date:
Mon Jun 04 12:45:15 2018 +0100
Revision:
9:35a1fad017ca
Parent:
6:5678c0b6f74e
Child:
11:23ea0907186e
Merge pull request #80 from ARMmbed/disable_new_targets



Disabled new targets until 5.9 is out

.

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 * 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 6:5678c0b6f74e 21 #include "CellularLog.h"
mbed_official 0:4611f6cf2413 22
mbed_official 0:4611f6cf2413 23 #define UDP 0
mbed_official 0:4611f6cf2413 24 #define TCP 1
mbed_official 0:4611f6cf2413 25
mbed_official 0:4611f6cf2413 26 // SIM pin code goes here
mbed_official 0:4611f6cf2413 27 #ifndef MBED_CONF_APP_SIM_PIN_CODE
mbed_official 0:4611f6cf2413 28 # define MBED_CONF_APP_SIM_PIN_CODE "1234"
mbed_official 0:4611f6cf2413 29 #endif
mbed_official 0:4611f6cf2413 30
mbed_official 0:4611f6cf2413 31 #ifndef MBED_CONF_APP_APN
mbed_official 0:4611f6cf2413 32 # define MBED_CONF_APP_APN "internet"
mbed_official 0:4611f6cf2413 33 #endif
mbed_official 0:4611f6cf2413 34 #ifndef MBED_CONF_APP_USERNAME
mbed_official 0:4611f6cf2413 35 # define MBED_CONF_APP_USERNAME NULL
mbed_official 0:4611f6cf2413 36 #endif
mbed_official 0:4611f6cf2413 37 #ifndef MBED_CONF_APP_PASSWORD
mbed_official 0:4611f6cf2413 38 # define MBED_CONF_APP_PASSWORD NULL
mbed_official 0:4611f6cf2413 39 #endif
mbed_official 0:4611f6cf2413 40
mbed_official 0:4611f6cf2413 41 // Number of retries /
mbed_official 0:4611f6cf2413 42 #define RETRY_COUNT 3
mbed_official 0:4611f6cf2413 43
mbed_official 0:4611f6cf2413 44
mbed_official 0:4611f6cf2413 45
mbed_official 0:4611f6cf2413 46 // CellularInterface object
mbed_official 0:4611f6cf2413 47 OnboardCellularInterface iface;
mbed_official 0:4611f6cf2413 48
mbed_official 0:4611f6cf2413 49 // Echo server hostname
mbed_official 2:0f644d6045cf 50 const char *host_name = "echo.mbedcloudtesting.com";
mbed_official 0:4611f6cf2413 51
mbed_official 0:4611f6cf2413 52 // Echo server port (same for TCP and UDP)
mbed_official 0:4611f6cf2413 53 const int port = 7;
mbed_official 0:4611f6cf2413 54
mbed_official 6:5678c0b6f74e 55 static rtos::Mutex trace_mutex;
mbed_official 6:5678c0b6f74e 56
mbed_official 6:5678c0b6f74e 57 #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 6:5678c0b6f74e 58 static void trace_wait()
mbed_official 6:5678c0b6f74e 59 {
mbed_official 6:5678c0b6f74e 60 trace_mutex.lock();
mbed_official 6:5678c0b6f74e 61 }
mbed_official 6:5678c0b6f74e 62
mbed_official 6:5678c0b6f74e 63 static void trace_release()
mbed_official 6:5678c0b6f74e 64 {
mbed_official 6:5678c0b6f74e 65 trace_mutex.unlock();
mbed_official 6:5678c0b6f74e 66 }
mbed_official 6:5678c0b6f74e 67
mbed_official 6:5678c0b6f74e 68 static char time_st[50];
mbed_official 6:5678c0b6f74e 69
mbed_official 6:5678c0b6f74e 70 static char* trace_time(size_t ss)
mbed_official 6:5678c0b6f74e 71 {
mbed_official 6:5678c0b6f74e 72 snprintf(time_st, 49, "[%08llums]", Kernel::get_ms_count());
mbed_official 6:5678c0b6f74e 73 return time_st;
mbed_official 6:5678c0b6f74e 74 }
mbed_official 6:5678c0b6f74e 75
mbed_official 6:5678c0b6f74e 76 static void trace_open()
mbed_official 6:5678c0b6f74e 77 {
mbed_official 6:5678c0b6f74e 78 mbed_trace_init();
mbed_official 6:5678c0b6f74e 79 mbed_trace_prefix_function_set( &trace_time );
mbed_official 6:5678c0b6f74e 80
mbed_official 6:5678c0b6f74e 81 mbed_trace_mutex_wait_function_set(trace_wait);
mbed_official 6:5678c0b6f74e 82 mbed_trace_mutex_release_function_set(trace_release);
mbed_official 6:5678c0b6f74e 83 }
mbed_official 6:5678c0b6f74e 84
mbed_official 6:5678c0b6f74e 85 static void trace_close()
mbed_official 6:5678c0b6f74e 86 {
mbed_official 6:5678c0b6f74e 87 mbed_trace_free();
mbed_official 6:5678c0b6f74e 88 }
mbed_official 6:5678c0b6f74e 89 #endif // #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 6:5678c0b6f74e 90
mbed_official 2:0f644d6045cf 91 Thread dot_thread(osPriorityNormal, 512);
mbed_official 0:4611f6cf2413 92
mbed_official 6:5678c0b6f74e 93 void print_function(const char *format, ...)
mbed_official 0:4611f6cf2413 94 {
mbed_official 6:5678c0b6f74e 95 trace_mutex.lock();
mbed_official 6:5678c0b6f74e 96 va_list arglist;
mbed_official 6:5678c0b6f74e 97 va_start( arglist, format );
mbed_official 6:5678c0b6f74e 98 vprintf(format, arglist);
mbed_official 6:5678c0b6f74e 99 va_end( arglist );
mbed_official 6:5678c0b6f74e 100 trace_mutex.unlock();
mbed_official 0:4611f6cf2413 101 }
mbed_official 0:4611f6cf2413 102
mbed_official 0:4611f6cf2413 103 void dot_event()
mbed_official 0:4611f6cf2413 104 {
mbed_official 0:4611f6cf2413 105 while (true) {
mbed_official 6:5678c0b6f74e 106 Thread::wait(4000);
mbed_official 0:4611f6cf2413 107 if (!iface.is_connected()) {
mbed_official 6:5678c0b6f74e 108 trace_mutex.lock();
mbed_official 6:5678c0b6f74e 109 printf(".");
mbed_official 6:5678c0b6f74e 110 fflush(stdout);
mbed_official 6:5678c0b6f74e 111 trace_mutex.unlock();
mbed_official 0:4611f6cf2413 112 } else {
mbed_official 0:4611f6cf2413 113 break;
mbed_official 0:4611f6cf2413 114 }
mbed_official 0:4611f6cf2413 115 }
mbed_official 0:4611f6cf2413 116 }
mbed_official 0:4611f6cf2413 117
mbed_official 0:4611f6cf2413 118 /**
mbed_official 0:4611f6cf2413 119 * Connects to the Cellular Network
mbed_official 0:4611f6cf2413 120 */
mbed_official 0:4611f6cf2413 121 nsapi_error_t do_connect()
mbed_official 0:4611f6cf2413 122 {
mbed_official 6:5678c0b6f74e 123 nsapi_error_t retcode = NSAPI_ERROR_OK;
mbed_official 0:4611f6cf2413 124 uint8_t retry_counter = 0;
mbed_official 0:4611f6cf2413 125
mbed_official 0:4611f6cf2413 126 while (!iface.is_connected()) {
mbed_official 0:4611f6cf2413 127 retcode = iface.connect();
mbed_official 0:4611f6cf2413 128 if (retcode == NSAPI_ERROR_AUTH_FAILURE) {
mbed_official 0:4611f6cf2413 129 print_function("\n\nAuthentication Failure. Exiting application\n");
mbed_official 6:5678c0b6f74e 130 } else if (retcode == NSAPI_ERROR_OK) {
mbed_official 6:5678c0b6f74e 131 print_function("\n\nConnection Established.\n");
mbed_official 6:5678c0b6f74e 132 } else if (retry_counter > RETRY_COUNT) {
mbed_official 6:5678c0b6f74e 133 print_function("\n\nFatal connection failure: %d\n", retcode);
mbed_official 6:5678c0b6f74e 134 } else {
mbed_official 6:5678c0b6f74e 135 print_function("\n\nCouldn't connect: %d, will retry\n", retcode);
mbed_official 0:4611f6cf2413 136 retry_counter++;
mbed_official 0:4611f6cf2413 137 continue;
mbed_official 0:4611f6cf2413 138 }
mbed_official 0:4611f6cf2413 139 break;
mbed_official 0:4611f6cf2413 140 }
mbed_official 6:5678c0b6f74e 141 return retcode;
mbed_official 0:4611f6cf2413 142 }
mbed_official 0:4611f6cf2413 143
mbed_official 0:4611f6cf2413 144 /**
mbed_official 0:4611f6cf2413 145 * Opens a UDP or a TCP socket with the given echo server and performs an echo
mbed_official 0:4611f6cf2413 146 * transaction retrieving current.
mbed_official 0:4611f6cf2413 147 */
mbed_official 0:4611f6cf2413 148 nsapi_error_t test_send_recv()
mbed_official 0:4611f6cf2413 149 {
mbed_official 0:4611f6cf2413 150 nsapi_size_or_error_t retcode;
mbed_official 0:4611f6cf2413 151 #if MBED_CONF_APP_SOCK_TYPE == TCP
mbed_official 0:4611f6cf2413 152 TCPSocket sock;
mbed_official 0:4611f6cf2413 153 #else
mbed_official 0:4611f6cf2413 154 UDPSocket sock;
mbed_official 0:4611f6cf2413 155 #endif
mbed_official 0:4611f6cf2413 156
mbed_official 0:4611f6cf2413 157 retcode = sock.open(&iface);
mbed_official 0:4611f6cf2413 158 if (retcode != NSAPI_ERROR_OK) {
mbed_official 6:5678c0b6f74e 159 print_function("UDPSocket.open() fails, code: %d\n", retcode);
mbed_official 0:4611f6cf2413 160 return -1;
mbed_official 0:4611f6cf2413 161 }
mbed_official 0:4611f6cf2413 162
mbed_official 0:4611f6cf2413 163 SocketAddress sock_addr;
mbed_official 0:4611f6cf2413 164 retcode = iface.gethostbyname(host_name, &sock_addr);
mbed_official 0:4611f6cf2413 165 if (retcode != NSAPI_ERROR_OK) {
mbed_official 6:5678c0b6f74e 166 print_function("Couldn't resolve remote host: %s, code: %d\n", host_name, retcode);
mbed_official 0:4611f6cf2413 167 return -1;
mbed_official 0:4611f6cf2413 168 }
mbed_official 0:4611f6cf2413 169
mbed_official 0:4611f6cf2413 170 sock_addr.set_port(port);
mbed_official 0:4611f6cf2413 171
mbed_official 0:4611f6cf2413 172 sock.set_timeout(15000);
mbed_official 0:4611f6cf2413 173 int n = 0;
mbed_official 0:4611f6cf2413 174 const char *echo_string = "TEST";
mbed_official 0:4611f6cf2413 175 char recv_buf[4];
mbed_official 0:4611f6cf2413 176 #if MBED_CONF_APP_SOCK_TYPE == TCP
mbed_official 0:4611f6cf2413 177 retcode = sock.connect(sock_addr);
mbed_official 0:4611f6cf2413 178 if (retcode < 0) {
mbed_official 6:5678c0b6f74e 179 print_function("TCPSocket.connect() fails, code: %d\n", retcode);
mbed_official 0:4611f6cf2413 180 return -1;
mbed_official 0:4611f6cf2413 181 } else {
mbed_official 6:5678c0b6f74e 182 print_function("TCP: connected with %s server\n", host_name);
mbed_official 0:4611f6cf2413 183 }
mbed_official 0:4611f6cf2413 184 retcode = sock.send((void*) echo_string, sizeof(echo_string));
mbed_official 0:4611f6cf2413 185 if (retcode < 0) {
mbed_official 6:5678c0b6f74e 186 print_function("TCPSocket.send() fails, code: %d\n", retcode);
mbed_official 0:4611f6cf2413 187 return -1;
mbed_official 0:4611f6cf2413 188 } else {
mbed_official 6:5678c0b6f74e 189 print_function("TCP: Sent %d Bytes to %s\n", retcode, host_name);
mbed_official 0:4611f6cf2413 190 }
mbed_official 0:4611f6cf2413 191
mbed_official 0:4611f6cf2413 192 n = sock.recv((void*) recv_buf, sizeof(recv_buf));
mbed_official 0:4611f6cf2413 193 #else
mbed_official 0:4611f6cf2413 194
mbed_official 0:4611f6cf2413 195 retcode = sock.sendto(sock_addr, (void*) echo_string, sizeof(echo_string));
mbed_official 0:4611f6cf2413 196 if (retcode < 0) {
mbed_official 6:5678c0b6f74e 197 print_function("UDPSocket.sendto() fails, code: %d\n", retcode);
mbed_official 0:4611f6cf2413 198 return -1;
mbed_official 0:4611f6cf2413 199 } else {
mbed_official 6:5678c0b6f74e 200 print_function("UDP: Sent %d Bytes to %s\n", retcode, host_name);
mbed_official 0:4611f6cf2413 201 }
mbed_official 0:4611f6cf2413 202
mbed_official 0:4611f6cf2413 203 n = sock.recvfrom(&sock_addr, (void*) recv_buf, sizeof(recv_buf));
mbed_official 0:4611f6cf2413 204 #endif
mbed_official 0:4611f6cf2413 205
mbed_official 0:4611f6cf2413 206 sock.close();
mbed_official 0:4611f6cf2413 207
mbed_official 0:4611f6cf2413 208 if (n > 0) {
mbed_official 6:5678c0b6f74e 209 print_function("Received from echo server %d Bytes\n", n);
mbed_official 0:4611f6cf2413 210 return 0;
mbed_official 0:4611f6cf2413 211 }
mbed_official 0:4611f6cf2413 212
mbed_official 0:4611f6cf2413 213 return -1;
mbed_official 0:4611f6cf2413 214 }
mbed_official 0:4611f6cf2413 215
mbed_official 0:4611f6cf2413 216 int main()
mbed_official 0:4611f6cf2413 217 {
mbed_official 6:5678c0b6f74e 218 print_function("\n\nmbed-os-example-cellular\n");
mbed_official 6:5678c0b6f74e 219 print_function("Establishing connection\n");
mbed_official 6:5678c0b6f74e 220 #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 6:5678c0b6f74e 221 trace_open();
mbed_official 6:5678c0b6f74e 222 #else
mbed_official 6:5678c0b6f74e 223 dot_thread.start(dot_event);
mbed_official 6:5678c0b6f74e 224 #endif // #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 0:4611f6cf2413 225 /* Set Pin code for SIM card */
mbed_official 0:4611f6cf2413 226 iface.set_sim_pin(MBED_CONF_APP_SIM_PIN_CODE);
mbed_official 0:4611f6cf2413 227
mbed_official 6:5678c0b6f74e 228 /* Set network credentials here, e.g., APN */
mbed_official 0:4611f6cf2413 229 iface.set_credentials(MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD);
mbed_official 0:4611f6cf2413 230
mbed_official 6:5678c0b6f74e 231 /* Set the modem debug on/off */
mbed_official 6:5678c0b6f74e 232 iface.modem_debug_on(MBED_CONF_APP_MODEM_TRACE);
mbed_official 6:5678c0b6f74e 233
mbed_official 6:5678c0b6f74e 234 nsapi_error_t retcode = NSAPI_ERROR_NO_CONNECTION;
mbed_official 0:4611f6cf2413 235
mbed_official 0:4611f6cf2413 236 /* Attempt to connect to a cellular network */
mbed_official 0:4611f6cf2413 237 if (do_connect() == NSAPI_ERROR_OK) {
mbed_official 6:5678c0b6f74e 238 retcode = test_send_recv();
mbed_official 0:4611f6cf2413 239 }
mbed_official 0:4611f6cf2413 240
mbed_official 6:5678c0b6f74e 241 if (retcode == NSAPI_ERROR_OK) {
mbed_official 6:5678c0b6f74e 242 print_function("\n\nSuccess. Exiting \n\n");
mbed_official 6:5678c0b6f74e 243 } else {
mbed_official 6:5678c0b6f74e 244 print_function("\n\nFailure. Exiting \n\n");
mbed_official 6:5678c0b6f74e 245 }
mbed_official 6:5678c0b6f74e 246 #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 6:5678c0b6f74e 247 trace_close();
mbed_official 6:5678c0b6f74e 248 #endif // #if MBED_CONF_MBED_TRACE_ENABLE
mbed_official 6:5678c0b6f74e 249
mbed_official 6:5678c0b6f74e 250 return 0;
mbed_official 0:4611f6cf2413 251 }
mbed_official 0:4611f6cf2413 252 // EOF