Wren Dougherty
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
Revision 0:785d351db1ad, committed 2014-04-29
- Comitter:
- wren301
- Date:
- Tue Apr 29 06:50:11 2014 +0000
- Child:
- 1:0d467ac74808
- Commit message:
- HW3 part1, first checkin
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832_lcd.lib Tue Apr 29 06:50:11 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/C12832_lcd/#8f86576007d6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Tue Apr 29 06:50:11 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#f6ec7a025939
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LM75B.lib Tue Apr 29 06:50:11 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 Apr 29 06:50:11 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 Apr 29 06:50:11 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/main.cpp Tue Apr 29 06:50:11 2014 +0000
@@ -0,0 +1,143 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "NTPClient.h"
+#include "C12832_lcd.h"
+#include "LM75B.h"
+#include "MMA7660.h"
+
+#define PST_OFFSET 7*60*60
+
+Ticker timer;
+C12832_LCD lcd; //Graphics LCD
+EthernetInterface eth; //Networking functions
+NTPClient ntp; //NTP client
+LM75B tmp(p28,p27);
+float setTemp = 74;
+float temp;
+int heaterOn = 0;
+DigitalIn leftButton(p13);
+DigitalIn rightButton(p16);
+#define DEBOUNCE_DELAY 3
+#define LOOP_DELAY_MS 100
+#define TEMP_HYSTERESIS 2
+//update time every 10 minutes
+#define UPDATE_TIME 60*1
+int pressed = 0;
+int debounceCount = 0;
+float avgTemp = 0;
+MMA7660 MMA(p28, p27);
+int updateTimeFromServer = 1;
+
+void debouncedButtonCheck() {
+ if (leftButton || rightButton || pressed) {
+ if (leftButton && !pressed) {setTemp -= 2;}
+ if (rightButton && !pressed) {setTemp += 2;}
+ pressed = 1;
+ debounceCount++;
+ if (debounceCount >= DEBOUNCE_DELAY) {
+ debounceCount = 0;
+ pressed = 0;
+ printf("New set temp: %.0f\n\r", setTemp);
+ lcd.locate(0,0);
+ lcd.printf("\n\rTemp: %.0f F Set: %.0f\n\r", avgTemp, setTemp);
+ }
+ }
+}
+void connectToTheInternet() {
+ eth.init(); //Init and use DHCP
+ wait(2);
+ lcd.cls();
+ lcd.printf("Getting IP Address\r\n");
+ printf("Getting IP Address\r\n");
+ if(eth.connect(60000)!=0) {
+ lcd.printf("DHCP error - No IP");
+ wait(10);
+ } else {
+ lcd.printf("IP is %s\n", eth.getIPAddress());
+ printf("IP is %s\n", eth.getIPAddress());
+ wait(2);
+ }
+ lcd.cls();
+}
+
+void updateTime() {
+ updateTimeFromServer = 1;
+}
+
+int main()
+{
+ connectToTheInternet();
+ //Variable to hold the current minute so we only update the display when the minute changes
+ char currentMinute[2];
+ currentMinute[1] = 'a';
+ char minute[2];
+ //float zaxis = MMA.z();
+
+ float currentTemp = -200;
+ lcd.printf("Updating time...\r\n");
+ printf("Updating time...\r\n");
+ if (ntp.setTime("0.pool.ntp.org") == 0) {
+ time_t ctTime;
+ lcd.printf("Set time successfully\r\n");
+ printf("Set time successfully\r\n");
+ lcd.cls();
+ timer.attach(&updateTime, UPDATE_TIME);
+ lcd.printf("\n\r\n\rHEATER OFF");
+ while(1) {
+
+ if(updateTimeFromServer) {
+ if (ntp.setTime("0.pool.ntp.org") == 0) {
+ printf("Time updated!");
+ } else {
+ lcd.locate(0,0);
+ printf("Time update failed \n\r");
+ lcd.printf("Time update failed");
+ }
+ updateTimeFromServer = 0;
+ }
+ //Checks button and sets setTemp accordingly
+ debouncedButtonCheck();
+ //Fetch the time
+ ctTime = time(NULL)- PST_OFFSET;
+ char timeBuffer[32];
+
+ //See if the minute has changed; set an update display flag if it has
+ strftime(minute, 8, "%M", localtime(&ctTime));
+ if ( (minute[1] != currentMinute[1]) ) {
+ //Formats the time for display
+ strftime(timeBuffer, 32, "%a %b %d %I:%M%p\n\r", localtime(&ctTime));
+ printf("%s\r", timeBuffer);
+ lcd.locate(0,0);
+ lcd.printf("%s\r", timeBuffer);
+ currentMinute[1] = minute[1];
+ }
+ //Update the temperature display if the temperature, set temp has changed
+ temp = tmp.read()*9.0/5.0 + 32.0;
+ //checks if the temperature (rounded to the nearest whole number) has changed
+ if (floor(temp+.5) != floor(currentTemp+.5)) {
+ printf("Temp: %.1f F Set: %.0f\n\r", temp, setTemp);
+ currentTemp = temp;
+ avgTemp = (temp+currentTemp)/2.0;
+ lcd.locate(0,0);
+ lcd.printf("\n\rTemp: %.0f F Set: %.0f\n\r", avgTemp, setTemp);
+ }
+ lcd.locate(0,0);
+ //Heater logic: turns off if it has gone 2 degrees over the set temp, or on if it's 2 degrees under
+ if (heaterOn && (temp > (setTemp + TEMP_HYSTERESIS)) ) {
+ printf("Heater turned OFF\n\r");
+ heaterOn = 0;
+ lcd.locate(0,0);
+ lcd.printf("\n\r\n\rHEATER OFF");
+ } else if (!heaterOn && (temp < (setTemp - TEMP_HYSTERESIS)) ) {
+ printf("Heater turned ON\n\r");
+ heaterOn = 1;
+ lcd.locate(0,0);
+ lcd.printf("\n\r\n\rHEATER ON");
+ }
+ wait(LOOP_DELAY_MS*.001);
+ }
+ } else {
+ lcd.printf("NTP Error\r\n");
+ }
+ eth.disconnect();
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Tue Apr 29 06:50:11 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#be2573f85b81
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Apr 29 06:50:11 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/6473597d706e \ No newline at end of file