Diff: PubNubDemo.cpp

Revision:

0:713518ea5028

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PubNubDemo.cpp	Wed Oct 01 11:39:10 2014 +0000
@@ -0,0 +1,313 @@
+#include <cstring>
+
+#include "mbed.h"
+#include "rtos.h"
+//#include "C12832.h"
+//#include "MMA7660.h"
+#include "MMA7455.h"
+#include "LM75B.h"
+
+#include "picojson.h"
+#include "PubNub.h"
+
+#include "sdram.h"
+
+//------------------------------------------------------------------------------------
+// You need to configure these cellular modem / SIM parameters.
+// These parameters are ignored for LISA-C200 variants and can be left NULL.
+//------------------------------------------------------------------------------------
+#include "MDM.h"
+//! Set your secret SIM pin here (e.g. "1234"). Check your SIM manual.
+#define SIMPIN      NULL
+/*! The APN of your network operator SIM, sometimes it is "internet" check your 
+    contract with the network operator. You can also try to look-up your settings in 
+    google: https://www.google.de/search?q=APN+list */
+#define APN         "online.telia.se"
+//! Set the user name for your APN, or NULL if not needed
+#define USERNAME    NULL
+//! Set the password for your APN, or NULL if not needed
+#define PASSWORD    NULL 
+//------------------------------------------------------------------------------------
+
+/* Demo of PubNub + the mbed application board. */
+
+/* How to get things set up: */
+/* 1. Tune in at the PubNub Developer Console, with the following
+ * keys (press Subscribe afterwards): */
+const char pubkey[] = "demo";
+const char subkey[] = "demo";
+//const char channel[] = "mbed";
+const char channel_pub[] = "mbed_data";
+const char channel_sub[] = "mbed_cmd";
+/* 2. Attach your mbed board to your computer. A folder should pop up like
+ * if you plug in a USB memory stick. */
+/* 3. Open this example in the mbed web IDE and hit the Compile button. */
+/* 4. A download popup with a .bin file will appear; save it in the USB
+ * mbed folder. */
+/* 5. Press reset button on the mbed to start things up. */
+
+/* You will see the board publish a "status" message that shows its
+ * current temperature and physical tilt.  The board's LCD should
+ * print some progress messages regarding that. */
+/* You can make the board do things too, by sending messages like:
+ * { "send_status": true }
+ * { "lcd": "Hi there!" }
+ * { "beep": true }
+ * { "led": {"r": 0.5, "g": 1, "b": 0} }
+ * Try it out! Paste these in the Message window and press the send icon.
+ */
+
+Serial pc(USBTX, USBRX); // tx, rx
+//MMA7660 MMA(P0_27, P0_28);
+MMA7455 MMA(P0_27, P0_28);
+LM75B tmp(P0_27, P0_28, LM75B::ADDRESS_1);
+//C12832 lcd(D11, D13, D12, D7, D10);
+
+PwmOut led_r(p25); // RGB LED with 3 PWM outputs for dimmer control
+PwmOut led_g(p28);
+PwmOut led_b(p26);
+//PwmOut speaker(D6); // Speaker with PWM driver
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+
+bool forceStatusUpdate = true;
+
+Mutex stdio_mutex; 
+
+#define safe_printf(...) do { \
+        stdio_mutex.lock(); \
+        pc.printf(__VA_ARGS__); \
+        stdio_mutex.unlock(); \
+    } while(0)
+
+#define safe_print_pnub_err(__prefix) do { \
+        stdio_mutex.lock(); \
+        if (pnub_err) { \
+            pc.printf("%s: ERR, code = %d, line = %d\n", (__prefix), pnub_code, pnub_line); \
+            pnub_err = false; \
+        } \
+        stdio_mutex.unlock(); \
+    } while(0)
+
+void pnub_err_handler(PubNubRes code, int line) {
+    stdio_mutex.lock();
+    if (code != PNR_OK) {
+        pc.printf("PbuNub:%d  ERROR %d\n", line, code);
+    }
+    stdio_mutex.unlock();
+}
+
+void process_msg(PubNub &pn, const char *jsonmsg)
+{
+    /* Use the picojson parser since we want to deal with complex messages.
+     * If you are short on memory, you can find an example for parsing simple
+     * JSON messages in the PubNub::subscribe() API docs. */
+    picojson::value msg;
+    std::string err = picojson::parse(msg, jsonmsg, jsonmsg + strlen(jsonmsg));
+    do {
+        if (!err.empty()) {
+            safe_printf("JSON parse: %s  \n", err.c_str());
+            break;
+        }
+    
+        if (msg.get("send_status").get<bool>()) {
+            //status_msg(pn);
+            forceStatusUpdate = true;
+            safe_printf("force_update\n");
+            break;
+        }
+        if (msg.get("lcd").is<std::string>()) {
+            safe_printf("in: %s  \n", msg.get("lcd").get<std::string>().c_str());
+            break;
+        }
+        if (msg.get("beep").is<bool>()) {
+            //speaker = msg.get("beep").get<bool>() ? 0.5 : 0;
+            break;
+        }
+        if (msg.get("led").is<picojson::object>()) {
+            picojson::value led = msg.get("led");
+            safe_printf("Old RGB { %.3f, %.3f, %.3f }\n", led_r.read(), led_g.read(), led_b.read());
+            if (led.get("r").is<double>()) led_r = 1.0 - led.get("r").get<double>();
+            if (led.get("g").is<double>()) led_g = 1.0 - led.get("g").get<double>();
+            if (led.get("b").is<double>()) led_b = 1.0 - led.get("b").get<double>();
+            safe_printf("New RGB { %.3f, %.3f, %.3f }\n", led_r.read(), led_g.read(), led_b.read());
+            break;
+        }
+    } while(0);
+}
+
+void publish_thread(void const *args)
+{
+    PubNub pn(pubkey, subkey);
+    Timer t;
+    t.start();
+    Timer tDbg;
+    int nDbg = 0;
+    float lastTemp = -3.75f;
+    while (true) {
+            
+        /* Read sensors. */
+        int m[3];
+        MMA.read(m[0], m[1], m[2]);
+        float temp = (float)tmp;
+    
+        /* Print on LCD. */
+        safe_printf("cur: mx=%3d, my=%3d, mz=%3d, t=%.2f  \n", m[0], m[1], m[2], temp);
+    
+        if (forceStatusUpdate || (temp != lastTemp)) {
+            lastTemp = temp;
+            forceStatusUpdate = false;
+            
+            /* Prepare JSON message. */
+            char jsonmsg[128];
+//            snprintf(jsonmsg, sizeof(jsonmsg),
+//                    "{\"status\":{\"mx\":%3d,\"my\":%3d,\"mz\":%3d,\"temp\":%.2f}}",
+//                    m[0], m[1], m[2], temp);
+            snprintf(jsonmsg, sizeof(jsonmsg),
+                    "%%7B%%22status%%22:%%7B%%22mx%%22:%3d,%%22my%%22:%3d,%%22mz%%22:%3d,%%22temp%%22:%.2f%%7D%%7D",
+                    m[0], m[1], m[2], temp);
+
+            /* Publish on PubNub. */
+            safe_printf("before publishing\n");
+            led_r = 0;
+            tDbg.start();
+//            PubNubRes ret = pn.publish(channel_pub, jsonmsg);
+            PubNubRes ret = pn.publish_urlenc(channel_pub, jsonmsg);
+            tDbg.stop();
+            if (++nDbg == 10) {
+                safe_printf("10 requests took %d ms, i.e %d ms/req\n", tDbg.read_ms(), tDbg.read_ms()/10);
+                tDbg.reset();
+                nDbg = 0;
+            }
+
+            if (ret != PNR_OK) {
+                safe_printf("puberr: %d  \n", ret);
+                //safe_print_pnub_err("pub");
+                forceStatusUpdate = true; // so that we can try again
+            }
+            led_r = 1;
+            safe_printf("after publishing\n");
+        }
+        
+        wait_ms(100);
+    }
+}
+
+void subscribe_thread(void const *args)
+{
+    PubNub pn(pubkey, subkey);
+    while(true) {
+        char *reply = NULL;
+        PubNubRes ret = pn.subscribe(channel_sub, &reply);
+        if (ret != PNR_OK) {
+            safe_printf("suberr: %d  \n", ret);
+            //safe_print_pnub_err("sub");
+            wait(1.0);
+            continue;
+        }
+
+        if (reply) {
+            safe_printf("recv(%s)\n", reply);
+            process_msg(pn, reply);
+        }
+
+        wait(0.5); // avoid busy loop in bad situations
+    }
+}
+
+/** Cause the mbed to flash the BLOD (Blue LEDs Of Death) sequence
+ */
+void mbed_die(void)
+{
+    led1 = led2 = 1; led3 = led4 = 0;  // lights out
+    while(1) {
+        led1 = 1;
+        led3 = 1;
+        wait_ms(100);
+        led2 = 1;
+        led1 = 0;
+        wait_ms(100);
+        led4 = 0;
+        led2 = 0;
+        wait_ms(100);
+        led3 = 0;
+        led4 = 1;
+        wait_ms(100);
+    }
+}
+
+int main()
+{
+    if (sdram_init()) {
+        pc.printf("Failed to initialize SDRAM\n");
+    }
+    
+    /* For debugging, you may find it useful to print memory usage
+     * stats. AvailableMemory may be flaky, but the following is nice.
+     * It will get printed to the USB serial port interface. */
+    //printf("%d: ", __LINE__); __heapstats((__heapprt)fprintf, stdout);
+
+    /* Generate a 800Hz tone using PWM hardware output */
+    //speaker.period(1.0/800.0); // 800hz period
+    led_r = led_g = led_b = 1.0; // lights out
+    led1 = led2 = 1; led3 = led4 = 0;  // lights out
+
+    //lcd.cls();
+    //lcd.locate(0,0);
+    
+    if (!tmp.open()) {
+        pc.printf("Failed to open LM75 temperature sensor\n");
+    }
+
+//    if (!MMA.testConnection())
+//        pc.printf("MMA error  \n");
+
+    // Initialize the accelerometer
+    if (!MMA.setMode(MMA7455::ModeMeasurement)) {
+        printf("Unable to set mode for MMA7455!\n");
+    }
+
+    // Calibrate it. It does not matter if it is on a level surface
+    // as this test is only interested in relative values.
+    if (!MMA.calibrate()) {
+        printf("Failed to calibrate MMA7455!\n");
+    }
+
+    MDMRtos<MDMSerial> mdm;
+    //mdm.setDebug(4); // enable this for debugging issues 
+    int i;
+    for (i = 1; i <= 10; i++) {
+        if (mdm.connect(SIMPIN, APN,USERNAME,PASSWORD)) {
+            printf("Connected\n");
+            mdm.setDebug(0); // disable debug again
+            break;
+        } else {
+            printf("Attempt %2d to connect to the modem FAILED.\n", i);
+            wait(1);
+            mdm.setDebug(min(i, 4)); // to add more and more debug output
+        }
+    }
+    if (i > 10) {
+        printf("Failed to connect to the modem\n");
+        mbed_die();
+    }
+    
+    forceStatusUpdate = true;
+    //status_msg(pn);
+    // lcd.printf("pub... ");
+
+    Thread t_p(publish_thread);
+    Thread t_s(subscribe_thread);
+
+    while (1) {
+        Thread::wait(2000);
+        safe_printf(".\n");
+    }
+
+    mdm.disconnect();
+    mdm.powerOff();
+}