Wren Dougherty / Mbed 2 deprecated HW7Wren

Connections to Xively working; has 5 channels on Xively (axl_x, axl_y, axl_z, heater_status, temperature)

Dependencies:   C12832_lcd EthernetInterface LM75B MMA7660 NTPClient libxively mbed-rtos mbed

main.cpp@5:59ac8fb475f2, 2014-05-31 (annotated)

Committer:
wren301
Date:
Sat May 31 21:39:53 2014 +0000
Revision:
5:59ac8fb475f2
Parent:
4:05986b9ea330 
Wifly attempt, can't get IP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wren301 0:785d351db1ad 1 #include "mbed.h"
wren301 0:785d351db1ad 2 #include "EthernetInterface.h"
wren301 0:785d351db1ad 3 #include "NTPClient.h"
wren301 0:785d351db1ad 4 #include "C12832_lcd.h"
wren301 0:785d351db1ad 5 #include "LM75B.h"
wren301 0:785d351db1ad 6 #include "MMA7660.h"
wren301 3:3a48ed10d6fe 7 #include "Websocket.h"
wren301 5:59ac8fb475f2 8 #include "WiflyInterface.h"
wren301 0:785d351db1ad 9
wren301 0:785d351db1ad 10 #define PST_OFFSET 7*60*60
wren301 0:785d351db1ad 11
wren301 5:59ac8fb475f2 12 Serial pc(USBTX, USBRX);
wren301 5:59ac8fb475f2 13 WiflyInterface wifly(p9, p10, p25, p26, "mbed", "password", WPA);
wren301 5:59ac8fb475f2 14
wren301 0:785d351db1ad 15 Ticker timer;
wren301 0:785d351db1ad 16 C12832_LCD lcd; //Graphics LCD
wren301 0:785d351db1ad 17 EthernetInterface eth; //Networking functions
wren301 0:785d351db1ad 18 NTPClient ntp; //NTP client
wren301 0:785d351db1ad 19 LM75B tmp(p28,p27);
wren301 2:cf992d90396e 20 float lowTemp = 74;
wren301 2:cf992d90396e 21 float highTemp = 86;
wren301 0:785d351db1ad 22 float temp;
wren301 0:785d351db1ad 23 int heaterOn = 0;
wren301 2:cf992d90396e 24 AnalogIn pot1(p20);
wren301 2:cf992d90396e 25 AnalogIn pot2(p19);
wren301 0:785d351db1ad 26 #define LOOP_DELAY_MS 100
wren301 0:785d351db1ad 27 //update time every 10 minutes
wren301 3:3a48ed10d6fe 28 #define UPDATE_TIME 60*1
wren301 3:3a48ed10d6fe 29 MMA7660 acc(p28, p27);// accelerometer
wren301 3:3a48ed10d6fe 30 int updateTimeFromServer = 1;
wren301 1:0d467ac74808 31
wren301 3:3a48ed10d6fe 32 void connectToTheInternet()
wren301 3:3a48ed10d6fe 33 {
wren301 5:59ac8fb475f2 34 wifly.init(); // use DHCP
wren301 5:59ac8fb475f2 35 while (!wifly.connect()); // join the network
wren301 5:59ac8fb475f2 36 printf("\n\rIP Address is %s\n\r", wifly.getIPAddress());
wren301 5:59ac8fb475f2 37 lcd.printf("IP is %s\n", eth.getIPAddress());
wren301 5:59ac8fb475f2 38 wait(5);
wren301 0:785d351db1ad 39 lcd.cls();
wren301 0:785d351db1ad 40 }
wren301 0:785d351db1ad 41
wren301 3:3a48ed10d6fe 42 void updateTimeRoutine()
wren301 3:3a48ed10d6fe 43 {
wren301 1:0d467ac74808 44 if (ntp.setTime("0.pool.ntp.org") == 0) {
wren301 1:0d467ac74808 45 printf("Time updated!");
wren301 1:0d467ac74808 46 } else {
wren301 1:0d467ac74808 47 lcd.locate(0,0);
wren301 1:0d467ac74808 48 printf("Time update failed \n\r");
wren301 1:0d467ac74808 49 lcd.printf("Time update failed");
wren301 1:0d467ac74808 50 }
wren301 1:0d467ac74808 51 updateTimeFromServer = 0;
wren301 1:0d467ac74808 52 }
wren301 1:0d467ac74808 53
wren301 3:3a48ed10d6fe 54 void updateTime()
wren301 3:3a48ed10d6fe 55 {
wren301 0:785d351db1ad 56 updateTimeFromServer = 1;
wren301 0:785d351db1ad 57 }
wren301 0:785d351db1ad 58
wren301 3:3a48ed10d6fe 59 void sendTempJSON()
wren301 3:3a48ed10d6fe 60 {
wren301 3:3a48ed10d6fe 61 char json_str[100];
wren301 3:3a48ed10d6fe 62 // See the output on http://sockets.mbed.org/app-board/viewer
wren301 3:3a48ed10d6fe 63 Websocket ws("ws://sockets.mbed.org:443/ws/app-board/wo");
wren301 3:3a48ed10d6fe 64 ws.connect();
wren301 3:3a48ed10d6fe 65 // create json string with acc/tmp data
wren301 3:3a48ed10d6fe 66 sprintf(json_str, "{\"id\":\"app_board_eth_EW2013\",\"ax\":%d,\"ay\":%d,\"az\":%d, \"tmp\":%d}", (int)(acc.x()*360), (int)(acc.y()*360), (int)(acc.z()*360), (int)tmp.read());
wren301 3:3a48ed10d6fe 67 // send str
wren301 3:3a48ed10d6fe 68 ws.send(json_str);
wren301 3:3a48ed10d6fe 69 ws.close();
wren301 3:3a48ed10d6fe 70 }
wren301 3:3a48ed10d6fe 71
wren301 2:cf992d90396e 72 //POT values are 0:1, will allow high and low temperatures
wren301 2:cf992d90396e 73 //lets you set temp between 50 and 100 degrees
wren301 3:3a48ed10d6fe 74 void updateTempsFromPots()
wren301 3:3a48ed10d6fe 75 {
wren301 2:cf992d90396e 76 float lowTempPot = pot2*50.0+50;
wren301 2:cf992d90396e 77 float highTempPot = pot1*50.0+50;
wren301 2:cf992d90396e 78 //round to the nearest whole number
wren301 2:cf992d90396e 79 lowTempPot = floor(lowTempPot+.5);
wren301 2:cf992d90396e 80 highTempPot = floor(highTempPot+.5);
wren301 2:cf992d90396e 81 //high temp must be at least 1 degree above low temp
wren301 3:3a48ed10d6fe 82 if (highTempPot <= lowTempPot) {
wren301 3:3a48ed10d6fe 83 highTempPot = lowTempPot +1;
wren301 3:3a48ed10d6fe 84 }
wren301 2:cf992d90396e 85 //Refresh the display if the temps have changed by more than a degree
wren301 2:cf992d90396e 86 if ((lowTemp != lowTempPot) || (highTemp != highTempPot)) {
wren301 2:cf992d90396e 87 lowTemp = lowTempPot;
wren301 2:cf992d90396e 88 highTemp = highTempPot;
wren301 2:cf992d90396e 89 lcd.locate(0,0);
wren301 2:cf992d90396e 90 lcd.printf("\n\r%.1f LOW: %.0f HIGH: %.0f", temp, lowTemp, highTemp);
wren301 2:cf992d90396e 91 printf("LOW: %.2f HIGH: %.2f\n\r", lowTemp, highTemp);
wren301 1:0d467ac74808 92 }
wren301 1:0d467ac74808 93 }
wren301 1:0d467ac74808 94
wren301 0:785d351db1ad 95 int main()
wren301 3:3a48ed10d6fe 96 {
wren301 3:3a48ed10d6fe 97 connectToTheInternet();
wren301 5:59ac8fb475f2 98
wren301 0:785d351db1ad 99 //Variable to hold the current minute so we only update the display when the minute changes
wren301 0:785d351db1ad 100 char currentMinute[2];
wren301 0:785d351db1ad 101 currentMinute[1] = 'a';
wren301 0:785d351db1ad 102 char minute[2];
wren301 3:3a48ed10d6fe 103
wren301 0:785d351db1ad 104 float currentTemp = -200;
wren301 3:3a48ed10d6fe 105 lcd.printf("Updating time...\r\n");
wren301 3:3a48ed10d6fe 106 printf("Updating time...\r\n");
wren301 0:785d351db1ad 107 if (ntp.setTime("0.pool.ntp.org") == 0) {
wren301 3:3a48ed10d6fe 108 printf("Set time successfully\r\n");
wren301 0:785d351db1ad 109 lcd.cls();
wren301 0:785d351db1ad 110 timer.attach(&updateTime, UPDATE_TIME);
wren301 0:785d351db1ad 111 lcd.printf("\n\r\n\rHEATER OFF");
wren301 3:3a48ed10d6fe 112
wren301 3:3a48ed10d6fe 113 while(1) {
wren301 0:785d351db1ad 114 if(updateTimeFromServer) {
wren301 3:3a48ed10d6fe 115 updateTimeRoutine();
wren301 3:3a48ed10d6fe 116 }
wren301 2:cf992d90396e 117 //Sets temp from POTs
wren301 3:3a48ed10d6fe 118 updateTempsFromPots();
wren301 3:3a48ed10d6fe 119 //Fetch the time
wren301 1:0d467ac74808 120 time_t ctTime;
wren301 0:785d351db1ad 121 ctTime = time(NULL)- PST_OFFSET;
wren301 3:3a48ed10d6fe 122 char timeBuffer[32];
wren301 3:3a48ed10d6fe 123
wren301 0:785d351db1ad 124 //See if the minute has changed; set an update display flag if it has
wren301 3:3a48ed10d6fe 125 strftime(minute, 8, "%M", localtime(&ctTime));
wren301 3:3a48ed10d6fe 126 if ( (minute[1] != currentMinute[1]) ) {
wren301 0:785d351db1ad 127 //Formats the time for display
wren301 3:3a48ed10d6fe 128 strftime(timeBuffer, 32, "%a %b %d %I:%M%p\n\r", localtime(&ctTime));
wren301 0:785d351db1ad 129 printf("%s\r", timeBuffer);
wren301 0:785d351db1ad 130 lcd.locate(0,0);
wren301 0:785d351db1ad 131 lcd.printf("%s\r", timeBuffer);
wren301 0:785d351db1ad 132 currentMinute[1] = minute[1];
wren301 3:3a48ed10d6fe 133 }
wren301 3:3a48ed10d6fe 134
wren301 0:785d351db1ad 135 //Update the temperature display if the temperature, set temp has changed
wren301 3:3a48ed10d6fe 136 temp = tmp.read()*9.0/5.0 + 32.0;
wren301 3:3a48ed10d6fe 137
wren301 3:3a48ed10d6fe 138 //checks if the temperature (rounded to the nearest whole number) has changed
wren301 0:785d351db1ad 139 if (floor(temp+.5) != floor(currentTemp+.5)) {
wren301 2:cf992d90396e 140 printf("Temp change: %.1f F\n\r", temp);
wren301 0:785d351db1ad 141 currentTemp = temp;
wren301 0:785d351db1ad 142 lcd.locate(0,0);
wren301 4:05986b9ea330 143 //updates the temperature line of the display
wren301 2:cf992d90396e 144 lcd.printf("\n\r%.1f LOW: %.0f HIGH: %.0f", temp, lowTemp, highTemp);
wren301 3:3a48ed10d6fe 145 sendTempJSON();
wren301 3:3a48ed10d6fe 146 }
wren301 3:3a48ed10d6fe 147
wren301 3:3a48ed10d6fe 148 lcd.locate(0,0);
wren301 4:05986b9ea330 149
wren301 4:05986b9ea330 150 //Heater logic: turns off if it has gone over the high temp and is on,
wren301 4:05986b9ea330 151 //or if under the low temp and is off
wren301 2:cf992d90396e 152 if (heaterOn && (temp > highTemp) ) {
wren301 0:785d351db1ad 153 printf("Heater turned OFF\n\r");
wren301 3:3a48ed10d6fe 154 heaterOn = 0;
wren301 0:785d351db1ad 155 lcd.locate(0,0);
wren301 0:785d351db1ad 156 lcd.printf("\n\r\n\rHEATER OFF");
wren301 2:cf992d90396e 157 } else if (!heaterOn && (temp < lowTemp) ) {
wren301 0:785d351db1ad 158 printf("Heater turned ON\n\r");
wren301 0:785d351db1ad 159 heaterOn = 1;
wren301 0:785d351db1ad 160 lcd.locate(0,0);
wren301 0:785d351db1ad 161 lcd.printf("\n\r\n\rHEATER ON");
wren301 3:3a48ed10d6fe 162 }
wren301 3:3a48ed10d6fe 163 wait(LOOP_DELAY_MS*.001);
wren301 0:785d351db1ad 164 }
wren301 0:785d351db1ad 165 } else {
wren301 0:785d351db1ad 166 lcd.printf("NTP Error\r\n");
wren301 0:785d351db1ad 167 }
wren301 5:59ac8fb475f2 168 wifly.disconnect();
wren301 0:785d351db1ad 169 }