Qasim Zia / Mbed OS example-ublox-cellular-interface-tcpfix

Change tcp server.

Dependencies:   ublox-at-cellular-interface ublox-cellular-base ublox-cellular-base-n2xx ublox-at-cellular-interface-n2xx

main.cpp@42:b267103abca1, 2019-11-08 (annotated)

Committer:
qasimublox
Date:
Fri Nov 08 12:09:13 2019 +0000
Revision:
42:b267103abca1
Parent:
38:e09e02c31ba1 
TCP server changed.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rob.meades@u-blox.com 1:581335dbdd60 1 /* mbed Microcontroller Library
rob.meades@u-blox.com 1:581335dbdd60 2 * Copyright (c) 2017 u-blox
rob.meades@u-blox.com 1:581335dbdd60 3 *
rob.meades@u-blox.com 1:581335dbdd60 4 * Licensed under the Apache License, Version 2.0 (the "License");
rob.meades@u-blox.com 1:581335dbdd60 5 * you may not use this file except in compliance with the License.
rob.meades@u-blox.com 1:581335dbdd60 6 * You may obtain a copy of the License at
rob.meades@u-blox.com 1:581335dbdd60 7 *
rob.meades@u-blox.com 1:581335dbdd60 8 * http://www.apache.org/licenses/LICENSE-2.0
rob.meades@u-blox.com 1:581335dbdd60 9 *
rob.meades@u-blox.com 1:581335dbdd60 10 * Unless required by applicable law or agreed to in writing, software
rob.meades@u-blox.com 1:581335dbdd60 11 * distributed under the License is distributed on an "AS IS" BASIS,
rob.meades@u-blox.com 1:581335dbdd60 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rob.meades@u-blox.com 1:581335dbdd60 13 * See the License for the specific language governing permissions and
rob.meades@u-blox.com 1:581335dbdd60 14 * limitations under the License.
rob.meades@u-blox.com 1:581335dbdd60 15 */
rob.meades@u-blox.com 1:581335dbdd60 16 #include "mbed.h"
rob.meades@u-blox.com 1:581335dbdd60 17 #include "UbloxATCellularInterface.h"
rob.meades@u-blox.com 28:e33af9f1ce3e 18 #include "UbloxATCellularInterfaceN2xx.h"
RobMeades 8:3e170c40a284 19
rob.meades@u-blox.com 31:4a36566b5385 20 // You must select the correct interface library for your board, by
rob.meades@u-blox.com 31:4a36566b5385 21 // uncommenting the correct line below. Supported combinations are
rob.meades@u-blox.com 31:4a36566b5385 22 // indicated with a "Y" in the table below.
rob.meades@u-blox.com 28:e33af9f1ce3e 23 //
wajahat.abbas@u-blox.com 38:e09e02c31ba1 24 // C030_U201 C030_N211 C027 C030_R41XM
wajahat.abbas@u-blox.com 38:e09e02c31ba1 25 // UbloxATCellularInterface Y - Y Y
wajahat.abbas@u-blox.com 38:e09e02c31ba1 26 // UbloxATCellularInterfaceN2xx - Y - -
rob.meades@u-blox.com 28:e33af9f1ce3e 27 // Note: the N211 module supports only UDP, not TCP
rob.meades@u-blox.com 28:e33af9f1ce3e 28
wajahat.abbas@u-blox.com 38:e09e02c31ba1 29 // UbloxATCellularInterface and UbloxATCellularInterfaceN2xx
wajahat.abbas@u-blox.com 38:e09e02c31ba1 30 // uses an IP stack on the cellular module and hence uses less RAM (significant on C027).
wajahat.abbas@u-blox.com 38:e09e02c31ba1 31 // This also allows other AT command operations (e.g. sending an SMS) to happen
rob.meades@u-blox.com 28:e33af9f1ce3e 32 // during a data transfer (for which you should replace the
rob.meades@u-blox.com 28:e33af9f1ce3e 33 // UbloxATCellularInterface library with the UbloxATCellularInterfaceExt
rob.meades@u-blox.com 28:e33af9f1ce3e 34 // library). However, it is slower than using the LWIP/PPP on the mbed
rob.meades@u-blox.com 28:e33af9f1ce3e 35 // MCU interface since more string parsing is required.
RobMeades 8:3e170c40a284 36 #define INTERFACE_CLASS UbloxATCellularInterface
rob.meades@u-blox.com 28:e33af9f1ce3e 37 //#define INTERFACE_CLASS UbloxATCellularInterfaceN2xx
rob.meades@u-blox.com 1:581335dbdd60 38
rob.meades@u-blox.com 1:581335dbdd60 39 // The credentials of the SIM in the board. If PIN checking is enabled
rob.meades@u-blox.com 1:581335dbdd60 40 // for your SIM card you must set this to the required PIN.
rob.meades@u-blox.com 1:581335dbdd60 41 #define PIN "0000"
rob.meades@u-blox.com 1:581335dbdd60 42
rob.meades@u-blox.com 1:581335dbdd60 43 // Network credentials. You should set this according to your
rob.meades@u-blox.com 30:4e55e975dd0b 44 // network/SIM card. For C030 non-N2xx boards, leave the parameters as NULL
rob.meades@u-blox.com 1:581335dbdd60 45 // otherwise, if you do not know the APN for your network, you may
rob.meades@u-blox.com 1:581335dbdd60 46 // either try the fairly common "internet" for the APN (and leave the
rob.meades@u-blox.com 1:581335dbdd60 47 // username and password NULL), or you may leave all three as NULL and then
rob.meades@u-blox.com 1:581335dbdd60 48 // a lookup will be attempted for a small number of known networks
rob.meades@u-blox.com 1:581335dbdd60 49 // (see APN_db.h in mbed-os/features/netsocket/cellular/utils).
rob.meades@u-blox.com 1:581335dbdd60 50 #define APN NULL
rob.meades@u-blox.com 1:581335dbdd60 51 #define USERNAME NULL
rob.meades@u-blox.com 1:581335dbdd60 52 #define PASSWORD NULL
qasimublox 42:b267103abca1 53 #define TCP_SERVER "httpbin.org"
rob.meades@u-blox.com 1:581335dbdd60 54
rob.meades@u-blox.com 1:581335dbdd60 55 // LEDs
rob.meades@u-blox.com 1:581335dbdd60 56 DigitalOut ledRed(LED1, 1);
rob.meades@u-blox.com 1:581335dbdd60 57 DigitalOut ledGreen(LED2, 1);
rob.meades@u-blox.com 1:581335dbdd60 58 DigitalOut ledBlue(LED3, 1);
rob.meades@u-blox.com 1:581335dbdd60 59
rob.meades@u-blox.com 1:581335dbdd60 60 // The user button
rob.meades@u-blox.com 1:581335dbdd60 61 volatile bool buttonPressed = false;
rob.meades@u-blox.com 1:581335dbdd60 62
rob.meades@u-blox.com 1:581335dbdd60 63 static void good() {
rob.meades@u-blox.com 1:581335dbdd60 64 ledGreen = 0;
rob.meades@u-blox.com 1:581335dbdd60 65 ledBlue = 1;
rob.meades@u-blox.com 1:581335dbdd60 66 ledRed = 1;
rob.meades@u-blox.com 1:581335dbdd60 67 }
rob.meades@u-blox.com 1:581335dbdd60 68
rob.meades@u-blox.com 1:581335dbdd60 69 static void bad() {
rob.meades@u-blox.com 1:581335dbdd60 70 ledRed = 0;
rob.meades@u-blox.com 1:581335dbdd60 71 ledGreen = 1;
rob.meades@u-blox.com 1:581335dbdd60 72 ledBlue = 1;
rob.meades@u-blox.com 1:581335dbdd60 73 }
rob.meades@u-blox.com 1:581335dbdd60 74
rob.meades@u-blox.com 1:581335dbdd60 75 static void event() {
rob.meades@u-blox.com 1:581335dbdd60 76 ledBlue = 0;
rob.meades@u-blox.com 1:581335dbdd60 77 ledRed = 1;
rob.meades@u-blox.com 1:581335dbdd60 78 ledGreen = 1;
rob.meades@u-blox.com 1:581335dbdd60 79 }
rob.meades@u-blox.com 1:581335dbdd60 80
rob.meades@u-blox.com 1:581335dbdd60 81 static void pulseEvent() {
rob.meades@u-blox.com 1:581335dbdd60 82 event();
rob.meades@u-blox.com 1:581335dbdd60 83 wait_ms(500);
rob.meades@u-blox.com 1:581335dbdd60 84 good();
rob.meades@u-blox.com 1:581335dbdd60 85 }
rob.meades@u-blox.com 1:581335dbdd60 86
rob.meades@u-blox.com 1:581335dbdd60 87 static void ledOff() {
rob.meades@u-blox.com 1:581335dbdd60 88 ledBlue = 1;
rob.meades@u-blox.com 1:581335dbdd60 89 ledRed = 1;
rob.meades@u-blox.com 1:581335dbdd60 90 ledGreen = 1;
rob.meades@u-blox.com 1:581335dbdd60 91 }
rob.meades@u-blox.com 1:581335dbdd60 92
rob.meades@u-blox.com 1:581335dbdd60 93 static void printNtpTime(char * buf, int len)
rob.meades@u-blox.com 1:581335dbdd60 94 {
rob.meades@u-blox.com 1:581335dbdd60 95 time_t timestamp = 0;
rob.meades@u-blox.com 1:581335dbdd60 96 struct tm *localTime;
rob.meades@u-blox.com 1:581335dbdd60 97 char timeString[25];
rob.meades@u-blox.com 1:581335dbdd60 98 time_t TIME1970 = 2208988800U;
rob.meades@u-blox.com 1:581335dbdd60 99
rob.meades@u-blox.com 1:581335dbdd60 100 if (len >= 43) {
rob.meades@u-blox.com 1:581335dbdd60 101 timestamp |= ((int) *(buf + 40)) << 24;
rob.meades@u-blox.com 1:581335dbdd60 102 timestamp |= ((int) *(buf + 41)) << 16;
rob.meades@u-blox.com 1:581335dbdd60 103 timestamp |= ((int) *(buf + 42)) << 8;
rob.meades@u-blox.com 1:581335dbdd60 104 timestamp |= ((int) *(buf + 43));
rob.meades@u-blox.com 1:581335dbdd60 105 timestamp -= TIME1970;
rob.meades@u-blox.com 1:581335dbdd60 106 localTime = localtime(&timestamp);
rob.meades@u-blox.com 1:581335dbdd60 107 if (localTime) {
rob.meades@u-blox.com 1:581335dbdd60 108 if (strftime(timeString, sizeof(timeString), "%a %b %d %H:%M:%S %Y", localTime) > 0) {
rob.meades@u-blox.com 1:581335dbdd60 109 printf("NTP timestamp is %s.\n", timeString);
rob.meades@u-blox.com 1:581335dbdd60 110 }
rob.meades@u-blox.com 1:581335dbdd60 111 }
rob.meades@u-blox.com 1:581335dbdd60 112 }
rob.meades@u-blox.com 1:581335dbdd60 113 }
rob.meades@u-blox.com 1:581335dbdd60 114
rob.meades@u-blox.com 1:581335dbdd60 115 static void cbButton()
rob.meades@u-blox.com 1:581335dbdd60 116 {
rob.meades@u-blox.com 1:581335dbdd60 117 buttonPressed = true;
rob.meades@u-blox.com 1:581335dbdd60 118 }
rob.meades@u-blox.com 1:581335dbdd60 119
rob.meades@u-blox.com 1:581335dbdd60 120 /* This example program for the u-blox C030 and C027 boards instantiates
wajahat.abbas@u-blox.com 38:e09e02c31ba1 121 * the UbloxATCellularInterface and uses it to make a simple sockets
wajahat.abbas@u-blox.com 38:e09e02c31ba1 122 * connection to a server, using 2.pool.ntp.org for UDP and developer.mbed.org for TCP.
wajahat.abbas@u-blox.com 38:e09e02c31ba1 123 * For a more comprehensive example, where higher layer protocols
wajahat.abbas@u-blox.com 38:e09e02c31ba1 124 * make use of the same sockets interface, see example-ublox-mbed-client.
rob.meades@u-blox.com 1:581335dbdd60 125 * Progress may be monitored with a serial terminal running at 9600 baud.
rob.meades@u-blox.com 1:581335dbdd60 126 * The LED on the C030 board will turn green when this program is
rob.meades@u-blox.com 1:581335dbdd60 127 * operating correctly, pulse blue when a sockets operation is completed
rob.meades@u-blox.com 1:581335dbdd60 128 * and turn red if there is a failure.
rob.meades@u-blox.com 1:581335dbdd60 129 */
rob.meades@u-blox.com 1:581335dbdd60 130
rob.meades@u-blox.com 1:581335dbdd60 131 int main()
rob.meades@u-blox.com 1:581335dbdd60 132 {
RobMeades 10:1f35371d572d 133 INTERFACE_CLASS *interface = new INTERFACE_CLASS();
RobMeades 5:bf352de1d3e5 134 // If you need to debug the cellular interface, comment out the
RobMeades 5:bf352de1d3e5 135 // instantiation above and uncomment the one below.
rob.meades@u-blox.com 31:4a36566b5385 136 // For the N2xx interface, change xxx to MBED_CONF_UBLOX_CELL_BAUD_RATE,
rob.meades@u-blox.com 31:4a36566b5385 137 // while for the non-N2xx interface change it to MBED_CONF_UBLOX_CELL_N2XX_BAUD_RATE.
RobMeades 8:3e170c40a284 138 // INTERFACE_CLASS *interface = new INTERFACE_CLASS(MDMTXD, MDMRXD,
rob.meades@u-blox.com 31:4a36566b5385 139 // xxx,
RobMeades 8:3e170c40a284 140 // true);
rob.meades@u-blox.com 28:e33af9f1ce3e 141 #ifndef TARGET_UBLOX_C030_N211
rob.meades@u-blox.com 1:581335dbdd60 142 TCPSocket sockTcp;
rob.meades@u-blox.com 28:e33af9f1ce3e 143 #endif
rob.meades@u-blox.com 1:581335dbdd60 144 UDPSocket sockUdp;
rob.meades@u-blox.com 1:581335dbdd60 145 SocketAddress udpServer;
rob.meades@u-blox.com 1:581335dbdd60 146 SocketAddress udpSenderAddress;
rob.meades@u-blox.com 1:581335dbdd60 147 SocketAddress tcpServer;
rob.meades@u-blox.com 1:581335dbdd60 148 char buf[1024];
rob.meades@u-blox.com 1:581335dbdd60 149 int x;
RobMeades 4:3e2b789c3adc 150 #ifdef TARGET_UBLOX_C027
RobMeades 4:3e2b789c3adc 151 // No user button on C027
RobMeades 4:3e2b789c3adc 152 InterruptIn userButton(NC);
RobMeades 4:3e2b789c3adc 153 #else
rob.meades@u-blox.com 1:581335dbdd60 154 InterruptIn userButton(SW0);
RobMeades 4:3e2b789c3adc 155 #endif
rob.meades@u-blox.com 1:581335dbdd60 156
rob.meades@u-blox.com 1:581335dbdd60 157 // Attach a function to the user button
rob.meades@u-blox.com 1:581335dbdd60 158 userButton.rise(&cbButton);
rob.meades@u-blox.com 1:581335dbdd60 159
rob.meades@u-blox.com 1:581335dbdd60 160 good();
rob.meades@u-blox.com 1:581335dbdd60 161 printf("Starting up, please wait up to 180 seconds for network registration to complete...\n");
RobMeades 33:48101a4c3f14 162 interface->set_credentials(APN, USERNAME, PASSWORD);
RobMeades 33:48101a4c3f14 163 for (x = 0; interface->connect(PIN) != 0; x++) {
RobMeades 33:48101a4c3f14 164 if (x > 0) {
RobMeades 33:48101a4c3f14 165 bad();
RobMeades 33:48101a4c3f14 166 printf("Retrying (have you checked that an antenna is plugged in and your APN is correct?)...\n");
RobMeades 33:48101a4c3f14 167 }
RobMeades 33:48101a4c3f14 168 }
RobMeades 33:48101a4c3f14 169 pulseEvent();
RobMeades 33:48101a4c3f14 170
qasimublox 42:b267103abca1 171 printf("Getting the IP address of \"" TCP_SERVER "\" and \"2.pool.ntp.org\"...\n");
RobMeades 33:48101a4c3f14 172 if ((interface->gethostbyname("2.pool.ntp.org", &udpServer) == 0) &&
fahim.alavi@u-blox.com 35:8e65f2bee044 173 (interface->gethostbyname(TCP_SERVER, &tcpServer) == 0)) {
rob.meades@u-blox.com 1:581335dbdd60 174 pulseEvent();
RobMeades 33:48101a4c3f14 175
RobMeades 33:48101a4c3f14 176 udpServer.set_port(123);
fahim.alavi@u-blox.com 35:8e65f2bee044 177 tcpServer.set_port(80);
RobMeades 33:48101a4c3f14 178 printf("\"2.pool.ntp.org\" address: %s on port %d.\n", udpServer.get_ip_address(), udpServer.get_port());
qasimublox 42:b267103abca1 179 printf("\"" TCP_SERVER "\" address: %s on port %d.\n", tcpServer.get_ip_address(), tcpServer.get_port());
rob.meades@u-blox.com 28:e33af9f1ce3e 180
RobMeades 33:48101a4c3f14 181 printf("Performing socket operations in a loop (until the user button is pressed on C030 or forever on C027)...\n");
RobMeades 33:48101a4c3f14 182 while (!buttonPressed) {
RobMeades 33:48101a4c3f14 183 // UDP Sockets
RobMeades 33:48101a4c3f14 184 printf("=== UDP ===\n");
RobMeades 33:48101a4c3f14 185 printf("Opening a UDP socket...\n");
RobMeades 33:48101a4c3f14 186 if (sockUdp.open(interface) == 0) {
RobMeades 33:48101a4c3f14 187 pulseEvent();
RobMeades 33:48101a4c3f14 188 printf("UDP socket open.\n");
RobMeades 33:48101a4c3f14 189 sockUdp.set_timeout(10000);
RobMeades 33:48101a4c3f14 190 printf("Sending time request to \"2.pool.ntp.org\" over UDP socket...\n");
RobMeades 33:48101a4c3f14 191 memset (buf, 0, sizeof(buf));
RobMeades 33:48101a4c3f14 192 *buf = '\x1b';
RobMeades 33:48101a4c3f14 193 if (sockUdp.sendto(udpServer, (void *) buf, 48) == 48) {
rob.meades@u-blox.com 1:581335dbdd60 194 pulseEvent();
RobMeades 33:48101a4c3f14 195 printf("Socket send completed, waiting for UDP response...\n");
RobMeades 33:48101a4c3f14 196 x = sockUdp.recvfrom(&udpSenderAddress, buf, sizeof (buf));
RobMeades 33:48101a4c3f14 197 if (x > 0) {
rob.meades@u-blox.com 1:581335dbdd60 198 pulseEvent();
RobMeades 33:48101a4c3f14 199 printf("Received %d byte response from server %s on UDP socket:\n"
RobMeades 33:48101a4c3f14 200 "-------------------------------------------------------\n",
RobMeades 33:48101a4c3f14 201 x, udpSenderAddress.get_ip_address());
RobMeades 33:48101a4c3f14 202 printNtpTime(buf, x);
RobMeades 33:48101a4c3f14 203 printf("-------------------------------------------------------\n");
RobMeades 33:48101a4c3f14 204 }
RobMeades 33:48101a4c3f14 205 }
RobMeades 33:48101a4c3f14 206 printf("Closing socket...\n");
RobMeades 33:48101a4c3f14 207 sockUdp.close();
RobMeades 33:48101a4c3f14 208 pulseEvent();
RobMeades 33:48101a4c3f14 209 printf("Socket closed.\n");
RobMeades 33:48101a4c3f14 210 }
RobMeades 33:48101a4c3f14 211
RobMeades 33:48101a4c3f14 212 #ifndef TARGET_UBLOX_C030_N211
RobMeades 33:48101a4c3f14 213 // TCP Sockets
RobMeades 33:48101a4c3f14 214 printf("=== TCP ===\n");
RobMeades 33:48101a4c3f14 215 printf("Opening a TCP socket...\n");
RobMeades 33:48101a4c3f14 216 if (sockTcp.open(interface) == 0) {
RobMeades 33:48101a4c3f14 217 pulseEvent();
RobMeades 33:48101a4c3f14 218 printf("TCP socket open.\n");
RobMeades 33:48101a4c3f14 219 sockTcp.set_timeout(10000);
RobMeades 33:48101a4c3f14 220 printf("Connecting socket to %s on port %d...\n", tcpServer.get_ip_address(), tcpServer.get_port());
RobMeades 33:48101a4c3f14 221 if (sockTcp.connect(tcpServer) == 0) {
RobMeades 33:48101a4c3f14 222 pulseEvent();
fahim.alavi@u-blox.com 35:8e65f2bee044 223 printf("Connected, sending HTTP GET request to %s over socket...\n", TCP_SERVER);
qasimublox 42:b267103abca1 224 strcpy (buf, "GET /json HTTP/1.0\r\n\r\n");
RobMeades 33:48101a4c3f14 225 // Note: since this is a short string we can send it in one go as it will
RobMeades 33:48101a4c3f14 226 // fit within the default buffer sizes. Normally you should call sock.send()
RobMeades 33:48101a4c3f14 227 // in a loop until your entire buffer has been sent.
RobMeades 33:48101a4c3f14 228 if (sockTcp.send((void *) buf, strlen(buf)) == (int) strlen(buf)) {
RobMeades 33:48101a4c3f14 229 pulseEvent();
RobMeades 33:48101a4c3f14 230 printf("Socket send completed, waiting for response...\n");
RobMeades 33:48101a4c3f14 231 x = sockTcp.recv(buf, sizeof (buf));
rob.meades@u-blox.com 1:581335dbdd60 232 if (x > 0) {
rob.meades@u-blox.com 1:581335dbdd60 233 pulseEvent();
RobMeades 33:48101a4c3f14 234 printf("Received %d byte response from server on TCP socket:\n"
RobMeades 33:48101a4c3f14 235 "----------------------------------------------------\n%.*s"
RobMeades 33:48101a4c3f14 236 "----------------------------------------------------\n",
RobMeades 33:48101a4c3f14 237 x, x, buf);
rob.meades@u-blox.com 1:581335dbdd60 238 }
rob.meades@u-blox.com 1:581335dbdd60 239 }
rob.meades@u-blox.com 1:581335dbdd60 240 }
RobMeades 33:48101a4c3f14 241 printf("Closing socket...\n");
RobMeades 33:48101a4c3f14 242 sockTcp.close();
RobMeades 33:48101a4c3f14 243 pulseEvent();
RobMeades 33:48101a4c3f14 244 printf("Socket closed.\n");
rob.meades@u-blox.com 1:581335dbdd60 245 }
RobMeades 33:48101a4c3f14 246 #endif
RobMeades 33:48101a4c3f14 247 wait_ms(5000);
RobMeades 33:48101a4c3f14 248 #ifndef TARGET_UBLOX_C027
RobMeades 33:48101a4c3f14 249 printf("[Checking if user button has been pressed]\n");
RobMeades 33:48101a4c3f14 250 #endif
rob.meades@u-blox.com 1:581335dbdd60 251 }
RobMeades 33:48101a4c3f14 252
RobMeades 33:48101a4c3f14 253 pulseEvent();
RobMeades 33:48101a4c3f14 254 printf("User button was pressed, stopping...\n");
RobMeades 33:48101a4c3f14 255 interface->disconnect();
RobMeades 33:48101a4c3f14 256 ledOff();
RobMeades 33:48101a4c3f14 257 printf("Stopped.\n");
rob.meades@u-blox.com 1:581335dbdd60 258 } else {
rob.meades@u-blox.com 1:581335dbdd60 259 bad();
qasimublox 42:b267103abca1 260 printf("Unable to get IP address of \"" TCP_SERVER "\" or \"2.pool.ntp.org\".\n");
rob.meades@u-blox.com 1:581335dbdd60 261 }
rob.meades@u-blox.com 1:581335dbdd60 262 }
RobMeades 32:bdc45c7052cc 263 // End Of File