Bhakti Kulkarni
Homework_5_IOT
Dependencies: C12832_lcd EthernetInterface LCD_fonts LM75B MMA7660 NTPClient SimpleSMTPClient WebSocketClient mbed-rtos mbed
Revision 0:40afd0d80b51, committed 2014-05-20
- Comitter:
- bhakti08
- Date:
- Tue May 20 06:18:16 2014 +0000
- Commit message:
- Websockets
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832_lcd.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/C12832_lcd/#468cdccff7af
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebouncedIn.cpp Tue May 20 06:18:16 2014 +0000
@@ -0,0 +1,93 @@
+#include "DebouncedIn.h"
+#include "mbed.h"
+
+/*
+ * Constructor
+ */
+DebouncedIn::DebouncedIn(PinName in)
+ : _in(in) {
+
+ // reset all the flags and counters
+ _samples = 0;
+ _output = 0;
+ _output_last = 0;
+ _rising_flag = 0;
+ _falling_flag = 0;
+ _state_counter = 0;
+
+ // Attach ticker
+ _ticker.attach(this, &DebouncedIn::_sample, 0.005);
+}
+
+void DebouncedIn::_sample() {
+
+ // take a sample
+ _samples = _samples >> 1; // shift left
+
+ if (_in) {
+ _samples |= 0x80;
+ }
+
+ // examine the sample window, look for steady state
+ if (_samples == 0x00) {
+ _output = 0;
+ }
+ else if (_samples == 0xFF) {
+ _output = 1;
+ }
+
+
+ // Rising edge detection
+ if ((_output == 1) && (_output_last == 0)) {
+ _rising_flag++;
+ _state_counter = 0;
+ }
+
+ // Falling edge detection
+ else if ((_output == 0) && (_output_last == 1)) {
+ _falling_flag++;
+ _state_counter = 0;
+ }
+
+ // steady state
+ else {
+ _state_counter++;
+ }
+
+ // update the output
+ _output_last = _output;
+
+}
+
+
+
+// return number of rising edges
+int DebouncedIn::rising(void) {
+ int return_value = _rising_flag;
+ _rising_flag = 0;
+ return(return_value);
+}
+
+// return number of falling edges
+int DebouncedIn::falling(void) {
+ int return_value = _falling_flag;
+ _falling_flag = 0;
+ return(return_value);
+}
+
+// return number of ticsk we've bene steady for
+int DebouncedIn::steady(void) {
+return(_state_counter);
+}
+
+// return the debounced status
+int DebouncedIn::read(void) {
+ return(_output);
+}
+
+// shorthand for read()
+DebouncedIn::operator int() {
+ return read();
+}
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebouncedIn.h Tue May 20 06:18:16 2014 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+
+ class DebouncedIn {
+ public:
+ DebouncedIn(PinName in);
+
+ int read (void);
+ operator int();
+
+ int rising(void);
+ int falling(void);
+ int steady(void);
+
+ private :
+ // objects
+ DigitalIn _in;
+ Ticker _ticker;
+
+ // function to take a sample, and update flags
+ void _sample(void);
+
+ // counters and flags
+ int _samples;
+ int _output;
+ int _output_last;
+ int _rising_flag;
+ int _falling_flag;
+ int _state_counter;
+
+ };
+
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/avnisha/code/EthernetInterface/#f0c3337842b6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LCD_fonts.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/LCD_fonts/#d0b7d7bf1f56
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LM75B.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/chris/code/LM75B/#6a70c9303bbe
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MMA7660.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Sissors/code/MMA7660/#a8e20db7901e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NTPClient.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/donatien/code/NTPClient/#881559865a93
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SimpleSMTPClient.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/sunifu/code/SimpleSMTPClient/#27053679f44b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WebSocketClient.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/samux/code/WebSocketClient/#4567996414a5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue May 20 06:18:16 2014 +0000
@@ -0,0 +1,245 @@
+/*******************************************************/
+/* IMPLEMENT THE THERMOSTAT */
+/*System turned ON/OFF using joystick or Accelerometer */
+/*Temperature Set using Joystick */
+/*System Status and heater state shown on LED */
+/*LCD displays: Time. */
+/* If system is ON current and set low */
+/* and High Temperature */
+/* Heater/Cooler ON */
+/* If system is OFF SYSTEM OFF */
+/*The timing, current temperature, accelerometer reading*/
+/*are sent periodically to websockets.org/bhakti */
+/*The duration after which the information is sent is */
+/*defined by macro SECONDS which is currently set to 10*/
+/*******************************************************/
+
+#include "mbed.h"
+#include "C12832_lcd.h"
+#include "LM75B.h"
+#include "DebouncedIn.h"
+#include "MMA7660.h"
+#include "EthernetInterface.h"
+#include "NTPClient.h"
+#include "SimpleSMTPClient.h"
+#include "Small_6.h"
+#include "Websocket.h"
+
+#define hys 3
+#define HEATER 0
+#define COOLER 1
+#define No_HEAT_COOL 2
+#define SEND 1
+#define DO_NOT_SEND 0
+#define SECONDS 10
+
+DebouncedIn reset(p14);
+C12832_LCD lcd;
+LM75B current(p28,p27);
+MMA7660 MMA(p28, p27);
+Serial pc(USBTX,USBRX);
+AnalogIn max_temp(p19);
+AnalogIn min_temp(p20);
+
+//System ON/OFF
+BusIn heat_on (p16,p13);
+
+//System ON/OFF LED
+DigitalOut thermostat (LED1);
+
+//Heater/Cooler ON/OFF LED. This can be furthur connected to the relay
+DigitalOut heater (LED2);
+DigitalOut cooler (LED3);
+
+Ticker check_move;
+Ticker Send_info;
+
+bool no_move; //This variable is set if no movement is detected
+float acc_x = MMA.x();
+float acc_y = MMA.y();
+float acc_z = MMA.z();
+float acc_x_old,acc_y_old,acc_z_old;
+int heat_cool; //1: Heater ON , 0:Cooler ON , 2: Heater and Cooler OFF
+bool send_info; //This variable is used to define when the information is
+ //to be sent to the web.
+
+/****************************************************************************/
+/*Function name: check: This function is used to detect motion around the */
+/*thermostat.It sets the variable no move if the previous and current */
+/*value of the accelerometer value is same. Accelerometer value unchanged */
+/*indicates that there is no motion around the thermostat */
+/****************************************************************************/
+void check()
+{
+ acc_x_old = acc_x;
+ acc_y_old = acc_y;
+ acc_z_old = acc_z;
+ acc_x = MMA.x();
+ acc_y = MMA.y();
+ acc_z = MMA.z();
+ if (acc_x_old == acc_x && acc_y_old == acc_y && acc_z_old == acc_z)
+ {
+ no_move = 1;
+ }
+ else
+ no_move = 0;
+
+}
+/******************************************************************************/
+
+/******************************************************************************/
+/*Function name: send_ws() */
+/*This function is used to set a boolean variable to SEND so that the */
+/*information can be sent over the web. The variable is set to SEND after no. */
+/*of seconds defined by SECONDS(currently 10sec) */
+/******************************************************************************/
+void send_ws()
+{
+ send_info = SEND;
+}
+
+/*******************************************************************************/
+
+int main()
+{
+ int ret_msg,ret_msg2,ret_curr_time,eth_ret,ws_ret;
+ EthernetInterface eth;
+ lcd.cls();
+ pc.printf("\n\n/* SimpleMTPClient library demonstration \n");
+
+ pc.printf("Setting up ...\n");
+ eth.init();
+ eth_ret = eth.connect();
+ if (eth_ret != 0)
+ {
+ lcd.cls();
+ lcd.printf("Ethernet not connected");
+ return -1;
+ }
+ pc.printf("Connected OK\n");
+
+ // IP Address
+ pc.printf("IP Address is %s\n", eth.getIPAddress());
+ lcd.locate(0,1);
+ lcd.printf("%s", eth.getIPAddress());
+ wait(2);
+
+
+ NTPClient ntp;
+ ntp.setTime("time.nist.gov");
+ lcd.cls();
+
+ Websocket ws("ws://sockets.mbed.org:443/ws/bhakti/rw");
+ ws_ret = ws.connect();
+ if (!ws_ret)
+ {
+ lcd.cls();
+ lcd.printf("Nor connected to URL");
+ return -1;
+ }
+
+ /*Messages to be sent over the web*/
+ char msg[100];
+ char msg2[100];
+ char curr_time[100];
+
+ float min_set;
+ float max_set;
+
+ //This variable is used to check if the system is ON or OFF
+ bool status=0;
+
+ time_t ctTime;
+ lcd.cls();
+ check_move.attach(&check,120.0);
+ Send_info.attach(&send_ws,SECONDS);
+ while (1) {
+ sprintf(msg,"Temperature is %0.2f",current.read());
+ sprintf(msg2,"Accelerometer readings are X= %0.2f,Y= %0.2f, Z= %0.2f",MMA.x(),MMA.y(),MMA.z());
+ sprintf(curr_time,"Time: %s",ctime(&ctTime));
+ if (send_info == SEND) {
+ ret_msg2 = ws.send(msg2);
+ ret_msg = ws.send(msg);
+ ret_curr_time=ws.send(curr_time);
+ if (ret_msg == -1 || ret_msg2 == -1 || ret_curr_time == -1)
+ {
+ lcd.cls();
+ lcd.printf("One of the messages not sent");
+ }
+ send_info = DO_NOT_SEND;
+ }
+ min_set = min_temp.read() * 50; //scale the pot value from 0 to 1 -> 0 to 50
+ max_set = max_temp.read() * 50;
+ ctTime = time(NULL) - 25200; //Adjust time as per local time
+ lcd.set_font((unsigned char*) Small_6); //set LCD font
+ lcd.locate(1,1);
+ lcd.printf("%s",ctime(&ctTime));
+ lcd.locate(1,8);
+
+ /*If system is ON print current and set temperature*/
+ /*Else print LCD OFF on LCD*/
+
+ if (status) {
+ lcd.printf("Curr:%.2f",current.read());
+ lcd.locate(1,16);
+ lcd.printf("MAX:%0.2f, MIN:%0.2f",max_set,min_set);
+ lcd.locate(1,24);
+ switch (heat_cool) {
+ case HEATER : lcd.printf("Heater ON ");
+ break;
+ case COOLER : lcd.printf("Cooler ON ");
+ break;
+ case No_HEAT_COOL : lcd.printf("Heat/Cool OFF");
+ break;
+ }
+
+ } else {
+ lcd.locate(1,10);
+ lcd.printf("System OFF");
+ wait (0.1);
+ }
+
+ /*If system is turned ON: Joystick is pushed towards edge of LCD
+ OR movement is detected
+ Turn System ON LED on: LED1 and Set the status variable to 1
+ Else if system is turned OFF by user turn OFF the system status LED
+ and the LED that is connected to the relay*/
+
+ if (heat_on == 0x2 || !no_move)
+ {
+ thermostat = 1;
+ status = 1;
+ } else if (heat_on == 0x1 || no_move) {
+ lcd.cls();
+ thermostat = 0;
+ heater = 0;
+ status = 0;
+ }
+
+ //Comparison logic and turn Heater/Cooler ON/OFF
+ if ((min_set > (current.read()+ hys)) && thermostat == 1) {
+ heater = 1;
+ cooler = 0;
+ status = 1;
+ heat_cool = HEATER;
+ }
+ else if ((max_set < (current.read()-hys)) && thermostat == 1) {
+ cooler = 1;
+ heater = 0;
+ status = 1;
+ heat_cool = COOLER;
+ }
+ else if (!thermostat) {
+ heater = 0;
+ cooler = 0;
+ status = 0;
+ }
+ else {
+ heater = 0;
+ cooler = 0;
+ status = 1;
+ heat_cool = No_HEAT_COOL;
+ }
+
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#88a1a9c26ae3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.lib Tue May 20 06:18:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/bhakti08/code/mbed/#224ee686d3e5