Bhakti Kulkarni
Microwave homework
Dependencies: C12832_lcd DebounceInterrupts LM75B mbed-rtos mbed
Revision 0:b3e2ffad2aab, committed 2014-03-16
- Comitter:
- bhakti08
- Date:
- Sun Mar 16 02:13:16 2014 +0000
- Commit message:
- Microwave homework-Partial
Changed in this revision
diff -r 000000000000 -r b3e2ffad2aab C12832_lcd.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832_lcd.lib Sun Mar 16 02:13:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/C12832_lcd/#468cdccff7af
diff -r 000000000000 -r b3e2ffad2aab DebounceInterrupts.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DebounceInterrupts.lib Sun Mar 16 02:13:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/bhakti08/code/DebounceInterrupts/#96a51b236ba0
diff -r 000000000000 -r b3e2ffad2aab DebouncedIn.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebouncedIn.cpp Sun Mar 16 02:13:16 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();
+}
+
+
diff -r 000000000000 -r b3e2ffad2aab DebouncedIn.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebouncedIn.h Sun Mar 16 02:13:16 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
diff -r 000000000000 -r b3e2ffad2aab LM75B.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LM75B.lib Sun Mar 16 02:13:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/chris/code/LM75B/#6a70c9303bbe
diff -r 000000000000 -r b3e2ffad2aab main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Mar 16 02:13:16 2014 +0000
@@ -0,0 +1,172 @@
+#include "mbed.h"
+#include "LM75B.h"
+#include "C12832_lcd.h"
+#include "rtos.h"
+#include "DebouncedIn.h"
+#include "DebouncedInterrupt.h"
+#include "Serial.h"
+
+//Serial pc(USBTX, USBRX);
+
+#define OPEN 1
+#define CLOSE 0
+#define ON 1
+#define OFF 0
+#define INTERRUPT
+
+DebouncedInterrupt increase_time(p13);
+DebouncedInterrupt decrease_time(p16);
+DebouncedInterrupt start (p12);
+DebouncedInterrupt stop(p15);
+DebouncedInterrupt door_status(p14);
+DigitalOut door_signal(LED4);
+//BusOut cook(LED4,LED3,LED2,LED1);
+
+LM75B in_temp(p28,p27);
+C12832_LCD lcd;
+DigitalOut cook_progress(LED1);
+DigitalOut door_Signal(LED4); //This LED will be 1 if door is open
+DigitalOut done_cooking(LED2);
+PwmOut speaker(p26);
+Timer ellapsed_cook_timer;
+
+int requested_cook_time = 120;
+//float inside_temp; //Initial value of inside temp is room temperature
+bool door_position = OPEN; //keep track if door is closed or open door_status = 0: close,1:open
+bool cook_status = OFF;
+bool speaker_signal;
+float ellapsed_cook_time = 0; //Cooking should be stopped if door open
+
+
+void open_door();
+void time_up();
+void time_down();
+void LED_blink (void const *args);
+void sound_speaker (void const *args);
+void start_cooking ();
+void stop_cooking ();
+void update_lcd(void const *args);
+void check_ellapsed_cook_time (void const *args);
+
+Ticker LED_Blink_timer;
+
+
+void open_door()
+{
+ door_position = !door_position;
+ {
+ if (door_position == OPEN)
+ {
+ door_Signal = 1;
+ }
+ else
+ {
+ door_Signal = 0;
+ }
+ }
+}
+
+void time_up()
+{
+
+ if (requested_cook_time < 180)
+ requested_cook_time = requested_cook_time + 60;
+ else
+ requested_cook_time = 180;
+}
+
+void time_down()
+{
+ if (requested_cook_time > 0)
+ requested_cook_time = requested_cook_time - 60;
+ else
+ requested_cook_time = 0;
+}
+
+void LED_blink ()
+{
+ cook_progress= !cook_progress;
+}
+
+void start_cooking ()
+{
+ if (door_position == CLOSE)
+ {
+ speaker_signal = 1;
+ ellapsed_cook_timer.start();
+ LED_Blink_timer.attach(&LED_blink,0.250);
+ }
+}
+
+void stop_cooking ()
+{
+ ellapsed_cook_timer.stop();
+ cook_status = OFF;
+ LED_Blink_timer.detach();
+ cook_progress = 0;
+ speaker_signal = 0;
+}
+
+void start_speaker()
+{
+ speaker.period(1.0/5000);
+ while(door_position != OPEN && speaker_signal == 1){
+ speaker = 0.5;
+ wait(0.1);
+ speaker = 0.0;
+ wait(0.1);
+ }
+ speaker_signal = 0;
+}
+
+void update_lcd(void const *args)
+{
+ lcd.cls();
+ while(true)
+ {
+ lcd.locate(0,0);
+ lcd.printf("Ellapsed time is %0.2f",ellapsed_cook_timer.read()/60);
+ lcd.locate(0,10);
+ lcd.printf("Set time is %d",requested_cook_time/60);
+ Thread::wait (1000);
+ }
+}
+
+
+void check_ellapsed_cook_time (void const *args)
+{
+ while (true)
+ {
+ if (ellapsed_cook_timer.read()/60 >= requested_cook_time/60 )//&& cook_status != OFF)
+ {
+ ellapsed_cook_timer.stop();
+ ellapsed_cook_timer.reset();
+ cook_status = OFF;
+ LED_Blink_timer.detach();
+ start_speaker();
+ }
+ Thread::wait(10);
+ }
+}
+
+
+int main()
+{
+ //printf("\nIn main");
+ Thread lcd_display(update_lcd,NULL, osPriorityAboveNormal);
+ Thread track_ellapsed_cook_time(check_ellapsed_cook_time,NULL,osPriorityHigh);
+ increase_time.attach(&time_up);
+ decrease_time.attach(&time_down);
+ start.attach(&start_cooking);
+ stop.attach(&stop_cooking);
+ door_status.attach(&open_door);
+ door_Signal = door_position;
+
+
+ while (true)
+ {
+ if(door_Signal == OPEN )//|| stop == 1)
+ stop_cooking();
+ Thread::wait(400);
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r b3e2ffad2aab mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Sun Mar 16 02:13:16 2014 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/mbed-rtos/#f88660a9bed1
diff -r 000000000000 -r b3e2ffad2aab mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun Mar 16 02:13:16 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8e73be2a2ac1 \ No newline at end of file