EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_ublox_Cellular_PubNubDemo

Example showing the ublox Cellular GPS/GNSS module with the online PubNub service on an LPC4088 Experiment Base Board

Dependencies:   C027_Support C12832 EALib LM75B MMA7660 PubNub mbed-rtos mbed picojson

PubNubDemo.cpp@10:cbefe5a22319, 2014-10-01 (annotated)

Committer:
embeddedartists
Date:
Wed Oct 01 10:10:42 2014 +0000
Revision:
10:cbefe5a22319
Parent:
8:ad3a3cffc336 
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pasky 0:e2c6c039dfbe 1 #include <cstring>
pasky 0:e2c6c039dfbe 2
pasky 0:e2c6c039dfbe 3 #include "mbed.h"
embeddedartists 10:cbefe5a22319 4 //#include "C12832.h"
embeddedartists 10:cbefe5a22319 5 //#include "MMA7660.h"
embeddedartists 10:cbefe5a22319 6 #include "MMA7455.h"
pasky 0:e2c6c039dfbe 7 #include "LM75B.h"
pasky 0:e2c6c039dfbe 8
pasky 0:e2c6c039dfbe 9 #include "picojson.h"
pasky 0:e2c6c039dfbe 10 #include "PubNub.h"
pasky 0:e2c6c039dfbe 11
mazgch 5:6cf75d71d7b9 12 //------------------------------------------------------------------------------------
mazgch 5:6cf75d71d7b9 13 // You need to configure these cellular modem / SIM parameters.
mazgch 5:6cf75d71d7b9 14 // These parameters are ignored for LISA-C200 variants and can be left NULL.
mazgch 5:6cf75d71d7b9 15 //------------------------------------------------------------------------------------
mazgch 2:5f22df5ec656 16 #include "MDM.h"
mazgch 5:6cf75d71d7b9 17 //! Set your secret SIM pin here (e.g. "1234"). Check your SIM manual.
mazgch 2:5f22df5ec656 18 #define SIMPIN NULL
mazgch 5:6cf75d71d7b9 19 /*! The APN of your network operator SIM, sometimes it is "internet" check your
mazgch 5:6cf75d71d7b9 20 contract with the network operator. You can also try to look-up your settings in
mazgch 5:6cf75d71d7b9 21 google: https://www.google.de/search?q=APN+list */
embeddedartists 10:cbefe5a22319 22 #define APN "online.telia.se"
mazgch 5:6cf75d71d7b9 23 //! Set the user name for your APN, or NULL if not needed
mazgch 2:5f22df5ec656 24 #define USERNAME NULL
mazgch 5:6cf75d71d7b9 25 //! Set the password for your APN, or NULL if not needed
mazgch 2:5f22df5ec656 26 #define PASSWORD NULL
mazgch 5:6cf75d71d7b9 27 //------------------------------------------------------------------------------------
pasky 0:e2c6c039dfbe 28
pasky 0:e2c6c039dfbe 29 /* Demo of PubNub + the mbed application board. */
pasky 0:e2c6c039dfbe 30
pasky 0:e2c6c039dfbe 31 /* How to get things set up: */
pasky 0:e2c6c039dfbe 32 /* 1. Tune in at the PubNub Developer Console, with the following
pasky 0:e2c6c039dfbe 33 * keys (press Subscribe afterwards): */
pasky 0:e2c6c039dfbe 34 const char pubkey[] = "demo";
pasky 0:e2c6c039dfbe 35 const char subkey[] = "demo";
embeddedartists 10:cbefe5a22319 36 const char channel[] = "mbed";
pasky 0:e2c6c039dfbe 37 /* 2. Attach your mbed board to your computer. A folder should pop up like
pasky 0:e2c6c039dfbe 38 * if you plug in a USB memory stick. */
pasky 0:e2c6c039dfbe 39 /* 3. Open this example in the mbed web IDE and hit the Compile button. */
pasky 0:e2c6c039dfbe 40 /* 4. A download popup with a .bin file will appear; save it in the USB
pasky 0:e2c6c039dfbe 41 * mbed folder. */
pasky 0:e2c6c039dfbe 42 /* 5. Press reset button on the mbed to start things up. */
pasky 0:e2c6c039dfbe 43
pasky 0:e2c6c039dfbe 44 /* You will see the board publish a "status" message that shows its
pasky 0:e2c6c039dfbe 45 * current temperature and physical tilt. The board's LCD should
pasky 0:e2c6c039dfbe 46 * print some progress messages regarding that. */
pasky 0:e2c6c039dfbe 47 /* You can make the board do things too, by sending messages like:
pasky 0:e2c6c039dfbe 48 * { "send_status": true }
pasky 0:e2c6c039dfbe 49 * { "lcd": "Hi there!" }
pasky 0:e2c6c039dfbe 50 * { "beep": true }
embeddedartists 10:cbefe5a22319 51 * { "led": {"r": 0.5, "g": 1, "b": 0} }
pasky 0:e2c6c039dfbe 52 * Try it out! Paste these in the Message window and press the send icon.
pasky 0:e2c6c039dfbe 53 */
pasky 0:e2c6c039dfbe 54
pasky 0:e2c6c039dfbe 55 Serial pc(USBTX, USBRX); // tx, rx
embeddedartists 10:cbefe5a22319 56 //MMA7660 MMA(P0_27, P0_28);
embeddedartists 10:cbefe5a22319 57 MMA7455 MMA(P0_27, P0_28);
embeddedartists 10:cbefe5a22319 58 LM75B tmp(P0_27, P0_28, LM75B::ADDRESS_1);
embeddedartists 10:cbefe5a22319 59 //C12832 lcd(D11, D13, D12, D7, D10);
pasky 0:e2c6c039dfbe 60
embeddedartists 10:cbefe5a22319 61 PwmOut led_r(p25); // RGB LED with 3 PWM outputs for dimmer control
embeddedartists 10:cbefe5a22319 62 PwmOut led_g(p28);
embeddedartists 10:cbefe5a22319 63 PwmOut led_b(p26);
embeddedartists 10:cbefe5a22319 64 //PwmOut speaker(D6); // Speaker with PWM driver
pasky 0:e2c6c039dfbe 65
pasky 0:e2c6c039dfbe 66 PubNub pn(pubkey, subkey);
pasky 0:e2c6c039dfbe 67
pasky 0:e2c6c039dfbe 68 void status_msg(PubNub &pn)
pasky 0:e2c6c039dfbe 69 {
pasky 0:e2c6c039dfbe 70 /* Read sensors. */
embeddedartists 10:cbefe5a22319 71 int m[3];
embeddedartists 10:cbefe5a22319 72 MMA.read(m[0], m[1], m[2]);
embeddedartists 10:cbefe5a22319 73 float temp = (float)tmp;
pasky 0:e2c6c039dfbe 74
pasky 0:e2c6c039dfbe 75 /* Print on LCD. */
embeddedartists 10:cbefe5a22319 76 pc.printf("pub: mx=%3d, my=%3d, mz=%3d, t=%.2f \n", m[0], m[1], m[2], temp);
pasky 0:e2c6c039dfbe 77
pasky 0:e2c6c039dfbe 78 /* Prepare JSON message. */
pasky 0:e2c6c039dfbe 79 char jsonmsg[128];
pasky 0:e2c6c039dfbe 80 snprintf(jsonmsg, sizeof(jsonmsg),
embeddedartists 10:cbefe5a22319 81 "{\"status\":{\"mx\":%3d,\"my\":%3d,\"mz\":%3d,\"temp\":%.2f}}",
pasky 0:e2c6c039dfbe 82 m[0], m[1], m[2], temp);
pasky 0:e2c6c039dfbe 83
pasky 0:e2c6c039dfbe 84 #if 0
pasky 0:e2c6c039dfbe 85 /* In some rare situations, you might want to instead use picojson
pasky 0:e2c6c039dfbe 86 * to construct JSON messages, even though it takes a lot of memory: */
pasky 0:e2c6c039dfbe 87
pasky 0:e2c6c039dfbe 88 printf("%d: ", __LINE__); __heapstats((__heapprt)fprintf, stdout);
pasky 0:e2c6c039dfbe 89 picojson::value msg(picojson::object_type, false);
pasky 0:e2c6c039dfbe 90 picojson::object &msgo = msg.get<picojson::object>();
pasky 0:e2c6c039dfbe 91 msgo["status"] = picojson::value(picojson::object_type, false);
pasky 0:e2c6c039dfbe 92 picojson::object &status = msgo["status"].get<picojson::object>();
pasky 0:e2c6c039dfbe 93 status["mx"] = picojson::value(double(mx));
pasky 0:e2c6c039dfbe 94 status["my"] = picojson::value(double(my));
pasky 0:e2c6c039dfbe 95 status["temp"] = picojson::value(temp);
pasky 0:e2c6c039dfbe 96 strcpy(jsonmsg, msg.serialize().c_str());
pasky 0:e2c6c039dfbe 97 printf("%d: ", __LINE__); __heapstats((__heapprt)fprintf, stdout);
pasky 0:e2c6c039dfbe 98 #endif
pasky 0:e2c6c039dfbe 99
pasky 0:e2c6c039dfbe 100 /* Publish on PubNub. */
pasky 0:e2c6c039dfbe 101 PubNubRes ret = pn.publish(channel, jsonmsg);
pasky 0:e2c6c039dfbe 102 if (ret != PNR_OK)
embeddedartists 10:cbefe5a22319 103 pc.printf("puberr: %d \n", ret);
pasky 0:e2c6c039dfbe 104 }
pasky 0:e2c6c039dfbe 105
pasky 0:e2c6c039dfbe 106 void process_msg(PubNub &pn, const char *jsonmsg)
pasky 0:e2c6c039dfbe 107 {
pasky 0:e2c6c039dfbe 108 /* Use the picojson parser since we want to deal with complex messages.
pasky 0:e2c6c039dfbe 109 * If you are short on memory, you can find an example for parsing simple
pasky 0:e2c6c039dfbe 110 * JSON messages in the PubNub::subscribe() API docs. */
pasky 0:e2c6c039dfbe 111 picojson::value msg;
pasky 0:e2c6c039dfbe 112 std::string err = picojson::parse(msg, jsonmsg, jsonmsg + strlen(jsonmsg));
pasky 0:e2c6c039dfbe 113 if (!err.empty()) {
embeddedartists 10:cbefe5a22319 114 pc.printf("JSON parse: %s \n", err.c_str());
pasky 0:e2c6c039dfbe 115 return;
pasky 0:e2c6c039dfbe 116 }
pasky 0:e2c6c039dfbe 117
pasky 0:e2c6c039dfbe 118 if (msg.get("send_status").get<bool>()) {
pasky 0:e2c6c039dfbe 119 status_msg(pn);
pasky 0:e2c6c039dfbe 120 }
pasky 0:e2c6c039dfbe 121 if (msg.get("lcd").is<std::string>()) {
embeddedartists 10:cbefe5a22319 122 pc.printf("in: %s \n", msg.get("lcd").get<std::string>().c_str());
pasky 0:e2c6c039dfbe 123 }
pasky 0:e2c6c039dfbe 124 if (msg.get("beep").is<bool>()) {
embeddedartists 10:cbefe5a22319 125 //speaker = msg.get("beep").get<bool>() ? 0.5 : 0;
pasky 0:e2c6c039dfbe 126 }
pasky 0:e2c6c039dfbe 127 if (msg.get("led").is<picojson::object>()) {
pasky 0:e2c6c039dfbe 128 picojson::value led = msg.get("led");
embeddedartists 10:cbefe5a22319 129 printf("Old RGB { %.3f, %.3f, %.3f }\n", led_r.read(), led_g.read(), led_b.read());
pasky 0:e2c6c039dfbe 130 if (led.get("r").is<double>()) led_r = 1.0 - led.get("r").get<double>();
pasky 0:e2c6c039dfbe 131 if (led.get("g").is<double>()) led_g = 1.0 - led.get("g").get<double>();
pasky 0:e2c6c039dfbe 132 if (led.get("b").is<double>()) led_b = 1.0 - led.get("b").get<double>();
embeddedartists 10:cbefe5a22319 133 printf("New RGB { %.3f, %.3f, %.3f }\n", led_r.read(), led_g.read(), led_b.read());
pasky 0:e2c6c039dfbe 134 }
pasky 0:e2c6c039dfbe 135 }
pasky 0:e2c6c039dfbe 136
pasky 0:e2c6c039dfbe 137 int main()
pasky 0:e2c6c039dfbe 138 {
pasky 0:e2c6c039dfbe 139 /* For debugging, you may find it useful to print memory usage
pasky 0:e2c6c039dfbe 140 * stats. AvailableMemory may be flaky, but the following is nice.
pasky 0:e2c6c039dfbe 141 * It will get printed to the USB serial port interface. */
embeddedartists 10:cbefe5a22319 142 //printf("%d: ", __LINE__); __heapstats((__heapprt)fprintf, stdout);
pasky 0:e2c6c039dfbe 143
pasky 0:e2c6c039dfbe 144 /* Generate a 800Hz tone using PWM hardware output */
embeddedartists 10:cbefe5a22319 145 //speaker.period(1.0/800.0); // 800hz period
pasky 0:e2c6c039dfbe 146 led_r = led_g = led_b = 1.0; // lights out
pasky 0:e2c6c039dfbe 147
embeddedartists 10:cbefe5a22319 148 //lcd.cls();
embeddedartists 10:cbefe5a22319 149 //lcd.locate(0,0);
embeddedartists 10:cbefe5a22319 150
embeddedartists 10:cbefe5a22319 151 if (!tmp.open())
embeddedartists 10:cbefe5a22319 152 pc.printf("Failed to open LM75 temperature sensor\n");
embeddedartists 10:cbefe5a22319 153
embeddedartists 10:cbefe5a22319 154 // if (!MMA.testConnection())
embeddedartists 10:cbefe5a22319 155 // pc.printf("MMA error \n");
pasky 0:e2c6c039dfbe 156
embeddedartists 10:cbefe5a22319 157 // Initialize the accelerometer
embeddedartists 10:cbefe5a22319 158 if (!MMA.setMode(MMA7455::ModeMeasurement)) {
embeddedartists 10:cbefe5a22319 159 printf("Unable to set mode for MMA7455!\n");
embeddedartists 10:cbefe5a22319 160 }
embeddedartists 10:cbefe5a22319 161
embeddedartists 10:cbefe5a22319 162 // Calibrate it. It does not matter if it is on a level surface
embeddedartists 10:cbefe5a22319 163 // as this test is only interested in relative values.
embeddedartists 10:cbefe5a22319 164 if (!MMA.calibrate()) {
embeddedartists 10:cbefe5a22319 165 printf("Failed to calibrate MMA7455!\n");
embeddedartists 10:cbefe5a22319 166 }
pasky 0:e2c6c039dfbe 167
mazgch 2:5f22df5ec656 168 MDMSerial mdm;
mazgch 5:6cf75d71d7b9 169 //mdm.setDebug(4); // enable this for debugging issues
embeddedartists 10:cbefe5a22319 170 int i;
embeddedartists 10:cbefe5a22319 171 for (i = 1; i <= 10; i++) {
embeddedartists 10:cbefe5a22319 172 if (mdm.connect(SIMPIN, APN,USERNAME,PASSWORD)) {
embeddedartists 10:cbefe5a22319 173 printf("Connected\n");
embeddedartists 10:cbefe5a22319 174 mdm.setDebug(0); // disable debug again
embeddedartists 10:cbefe5a22319 175 break;
embeddedartists 10:cbefe5a22319 176 } else {
embeddedartists 10:cbefe5a22319 177 printf("Attempt %2d to connect to the modem FAILED.\n", i);
embeddedartists 10:cbefe5a22319 178 wait(1);
embeddedartists 10:cbefe5a22319 179 mdm.setDebug(min(i, 4)); // to add more and more debug output
embeddedartists 10:cbefe5a22319 180 }
embeddedartists 10:cbefe5a22319 181 }
embeddedartists 10:cbefe5a22319 182 if (i > 10) {
embeddedartists 10:cbefe5a22319 183 printf("Failed to connect to the modem\n");
embeddedartists 10:cbefe5a22319 184 mbed_die();
embeddedartists 10:cbefe5a22319 185 }
pasky 0:e2c6c039dfbe 186
pasky 0:e2c6c039dfbe 187 status_msg(pn);
pasky 0:e2c6c039dfbe 188 // lcd.printf("pub... ");
pasky 0:e2c6c039dfbe 189
pasky 0:e2c6c039dfbe 190 while (1) {
pasky 0:e2c6c039dfbe 191 // lcd.printf("sub... ");
embeddedartists 10:cbefe5a22319 192 //printf("%d: ", __LINE__); __heapstats((__heapprt)fprintf, stdout);
embeddedartists 10:cbefe5a22319 193 printf(".\n");
pasky 0:e2c6c039dfbe 194
pasky 0:e2c6c039dfbe 195 char *reply = NULL;
pasky 0:e2c6c039dfbe 196 PubNubRes ret = pn.subscribe(channel, &reply);
pasky 0:e2c6c039dfbe 197 if (ret != PNR_OK) {
embeddedartists 10:cbefe5a22319 198 printf("suberr: %d \n", ret);
pasky 0:e2c6c039dfbe 199 wait(1.0);
pasky 0:e2c6c039dfbe 200 continue;
pasky 0:e2c6c039dfbe 201 }
pasky 0:e2c6c039dfbe 202
pasky 0:e2c6c039dfbe 203 if (reply) {
embeddedartists 10:cbefe5a22319 204 printf("recv(%s)\n", reply);
pasky 0:e2c6c039dfbe 205 process_msg(pn, reply);
pasky 0:e2c6c039dfbe 206 }
pasky 0:e2c6c039dfbe 207
pasky 0:e2c6c039dfbe 208 wait(0.5); // avoid busy loop in bad situations
embeddedartists 10:cbefe5a22319 209 status_msg(pn);
pasky 0:e2c6c039dfbe 210 }
mazgch 2:5f22df5ec656 211
mazgch 2:5f22df5ec656 212 mdm.disconnect();
mazgch 2:5f22df5ec656 213 mdm.powerOff();
pasky 0:e2c6c039dfbe 214 }