jim hamblen / Mbed 2 deprecated mythermostat

example skeleton code for student lab project

Dependencies:   4DGL-uLCD-SE PinDetect SDFileSystem mbed

Fork of mymbedthermostat by jim hamblen

main.cpp@3:346ef671ef28, 2013-01-31 (annotated)

Committer:
4180_1
Date:
Thu Jan 31 19:02:24 2013 +0000
Revision:
3:346ef671ef28
Parent:
2:58d85409f7ff
Child:
4:9a4d22a279b3
ver 1.1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 2:58d85409f7ff 1 // skeleton code for ECE 2036 thermostat lab
4180_1 2:58d85409f7ff 2 // code must be added by students
4180_1 0:cc87c48aa43c 3 #include "mbed.h"
4180_1 2:58d85409f7ff 4 #include "TMP36.h"
4180_1 2:58d85409f7ff 5 #include "SDFileSystem.h"
4180_1 2:58d85409f7ff 6 #include "TextLCD.h"
4180_1 0:cc87c48aa43c 7 #include "PinDetect.h"
4180_1 2:58d85409f7ff 8 #include "Speaker.h"
4180_1 2:58d85409f7ff 9 // must add your new class code to the project file Shiftbrite.h
4180_1 2:58d85409f7ff 10 #include "Shiftbrite.h"
4180_1 2:58d85409f7ff 11
4180_1 2:58d85409f7ff 12 // use class to setup temperature sensor pins
4180_1 2:58d85409f7ff 13 TMP36 myTMP36(p15); //Analog in
4180_1 0:cc87c48aa43c 14
4180_1 2:58d85409f7ff 15 // use class to setup microSD card filesystem
4180_1 2:58d85409f7ff 16 SDFileSystem sd(p5, p6, p7, p8, "sd");
4180_1 2:58d85409f7ff 17
4180_1 2:58d85409f7ff 18 // use class to setup the LCD
4180_1 2:58d85409f7ff 19 TextLCD myLCD(p22, p23, p24, p25, p26, p27); // rs, e, d4-d7
4180_1 2:58d85409f7ff 20
4180_1 2:58d85409f7ff 21 // use class to setup pushbuttons pins
4180_1 2:58d85409f7ff 22 PinDetect pb1(p28);
4180_1 2:58d85409f7ff 23 PinDetect pb2(p29);
4180_1 2:58d85409f7ff 24 PinDetect pb3(p30);
4180_1 2:58d85409f7ff 25
4180_1 2:58d85409f7ff 26 // use class to setup speaker pin
4180_1 2:58d85409f7ff 27 Speaker mySpeaker(p21); //PWM out
4180_1 0:cc87c48aa43c 28
4180_1 2:58d85409f7ff 29 // use class to setup Shiftbrite pins
4180_1 2:58d85409f7ff 30 Shiftbrite myShiftbrite(p9, p10, p11, p12, p13);// ei li di n/c ci
4180_1 2:58d85409f7ff 31
4180_1 2:58d85409f7ff 32 // use class to setup Mbed's four on-board LEDs
4180_1 2:58d85409f7ff 33 DigitalOut myLED1(LED1);
4180_1 2:58d85409f7ff 34 DigitalOut myLED2(LED2);
4180_1 2:58d85409f7ff 35 DigitalOut myLED3(LED3);
4180_1 2:58d85409f7ff 36 DigitalOut myLED4(LED4);
4180_1 2:58d85409f7ff 37
4180_1 2:58d85409f7ff 38 // heat or code mode jumper - removed when pushbuttons added
4180_1 2:58d85409f7ff 39 DigitalIn jumper_wire(p14);
4180_1 0:cc87c48aa43c 40
4180_1 2:58d85409f7ff 41 //also setting any unused analog input pins to digital outputs reduces A/D noise a bit
4180_1 2:58d85409f7ff 42 //see http://mbed.org/users/chris/notebook/Getting-best-ADC-performance/
4180_1 2:58d85409f7ff 43 DigitalOut P16(p16);
4180_1 2:58d85409f7ff 44 DigitalOut P17(p17);
4180_1 2:58d85409f7ff 45 DigitalOut P18(p18);
4180_1 2:58d85409f7ff 46 DigitalOut P19(p19);
4180_1 2:58d85409f7ff 47 DigitalOut P20(p20);
4180_1 2:58d85409f7ff 48
4180_1 2:58d85409f7ff 49
4180_1 2:58d85409f7ff 50
4180_1 2:58d85409f7ff 51
4180_1 2:58d85409f7ff 52 // Global variables used in callbacks and main program
4180_1 2:58d85409f7ff 53 // C variables in interrupt routines should use volatile keyword
4180_1 2:58d85409f7ff 54 int volatile heat_setting=78; // heat to temp
4180_1 2:58d85409f7ff 55 int volatile cool_setting=68; // cool to temp
4180_1 2:58d85409f7ff 56 bool volatile mode=false; // heat or cool mpde
4180_1 0:cc87c48aa43c 57
4180_1 1:768b8bd42e33 58 // Callback routine is interrupt activated by a debounced pb1 hit
4180_1 2:58d85409f7ff 59 void pb1_hit_callback (void)
4180_1 2:58d85409f7ff 60 {
4180_1 2:58d85409f7ff 61 // ADD CODE HERE
4180_1 0:cc87c48aa43c 62 }
4180_1 1:768b8bd42e33 63 // Callback routine is interrupt activated by a debounced pb2 hit
4180_1 2:58d85409f7ff 64 void pb2_hit_callback (void)
4180_1 2:58d85409f7ff 65 {
4180_1 2:58d85409f7ff 66 // ADD CODE HERE
4180_1 2:58d85409f7ff 67 }
4180_1 2:58d85409f7ff 68 // Callback routine is interrupt activated by a debounced pb3 hit
4180_1 2:58d85409f7ff 69 void pb3_hit_callback (void)
4180_1 2:58d85409f7ff 70 {
4180_1 2:58d85409f7ff 71 // ADD CODE HERE
4180_1 1:768b8bd42e33 72 }
4180_1 2:58d85409f7ff 73
4180_1 0:cc87c48aa43c 74
4180_1 2:58d85409f7ff 75 int main()
4180_1 2:58d85409f7ff 76 {
4180_1 2:58d85409f7ff 77 float Current_temp=0.0;
4180_1 2:58d85409f7ff 78
4180_1 2:58d85409f7ff 79 // Use internal pullups for the three pushbuttons
4180_1 2:58d85409f7ff 80 pb1.mode(PullUp);
4180_1 1:768b8bd42e33 81 pb2.mode(PullUp);
4180_1 2:58d85409f7ff 82 pb3.mode(PullUp);
4180_1 0:cc87c48aa43c 83 // Delay for initial pullup to take effect
4180_1 0:cc87c48aa43c 84 wait(.01);
4180_1 1:768b8bd42e33 85 // Setup Interrupt callback functions for a pb hit
4180_1 1:768b8bd42e33 86 pb1.attach_deasserted(&pb1_hit_callback);
4180_1 1:768b8bd42e33 87 pb2.attach_deasserted(&pb2_hit_callback);
4180_1 3:346ef671ef28 88 pb3.attach_deasserted(&pb3_hit_callback);
4180_1 1:768b8bd42e33 89 // Start sampling pb inputs using interrupts
4180_1 1:768b8bd42e33 90 pb1.setSampleFrequency();
4180_1 1:768b8bd42e33 91 pb2.setSampleFrequency();
4180_1 3:346ef671ef28 92 pb3.setSampleFrequency();
4180_1 2:58d85409f7ff 93 // pushbuttons now setup and running
4180_1 2:58d85409f7ff 94
4180_1 2:58d85409f7ff 95
4180_1 2:58d85409f7ff 96 // start I/O examples - DELETE THIS IN YOUR CODE..BUT WILL USE THESE I/O IDEAS ELSEWHERE
4180_1 2:58d85409f7ff 97 // since all this compiles - the needed *.h files for these are in the project
4180_1 2:58d85409f7ff 98 //
4180_1 2:58d85409f7ff 99 Current_temp = myTMP36;
4180_1 2:58d85409f7ff 100 printf("Hello PC World\n\r"); // need terminal application running on PC to see this
4180_1 2:58d85409f7ff 101 myLCD.printf("Hello LCD World"); // LCD
4180_1 2:58d85409f7ff 102 mySpeaker.PlayNote(500.0, 1.0, 1.0); // Speaker buzz
4180_1 2:58d85409f7ff 103 myShiftbrite.write( 0, 50 ,0); // Green RGB LED
4180_1 2:58d85409f7ff 104 // SD card write file example - prints error message on PC when running until SD card hooked up
4180_1 3:346ef671ef28 105 // Delete to avoid blinking LED run time error
4180_1 3:346ef671ef28 106 mkdir("/sd/mydir", 0777); // set up directory and permissions
4180_1 2:58d85409f7ff 107 FILE *fp = fopen("/sd/mydir/sdtest.txt", "w"); //open SD
4180_1 2:58d85409f7ff 108 if(fp == NULL) {
4180_1 2:58d85409f7ff 109 error("Could not open file for write\n");
4180_1 2:58d85409f7ff 110 }
4180_1 2:58d85409f7ff 111 fprintf(fp, "Hello SD Card World!"); // write SD
4180_1 2:58d85409f7ff 112 fclose(fp); // close SD card
4180_1 2:58d85409f7ff 113 //
4180_1 2:58d85409f7ff 114 // end I/O examples
4180_1 2:58d85409f7ff 115
4180_1 2:58d85409f7ff 116
4180_1 2:58d85409f7ff 117
4180_1 2:58d85409f7ff 118
4180_1 3:346ef671ef28 119 // State machine code below will need changes and additions
4180_1 0:cc87c48aa43c 120 while (1) {
4180_1 2:58d85409f7ff 121 {
4180_1 2:58d85409f7ff 122 enum Statetype { Heat_off = 0, Heat_on };
4180_1 2:58d85409f7ff 123 Statetype state = Heat_off;
4180_1 2:58d85409f7ff 124 while(1) {
4180_1 2:58d85409f7ff 125 switch (state) {
4180_1 2:58d85409f7ff 126 case Heat_off:
4180_1 3:346ef671ef28 127 myLED4 = 0;
4180_1 2:58d85409f7ff 128 state = Heat_on;
4180_1 2:58d85409f7ff 129 break;
4180_1 2:58d85409f7ff 130 case Heat_on:
4180_1 3:346ef671ef28 131 myLED4 = 1;
4180_1 2:58d85409f7ff 132 state = Heat_off;
4180_1 2:58d85409f7ff 133 break;
4180_1 2:58d85409f7ff 134 }
4180_1 2:58d85409f7ff 135 wait(0.33);
4180_1 3:346ef671ef28 136 // heartbeat LED - common debug tool
4180_1 3:346ef671ef28 137 // blinks as long as code is running and not locked up
4180_1 3:346ef671ef28 138 myLED1=!myLED1;
4180_1 2:58d85409f7ff 139 }
4180_1 2:58d85409f7ff 140 }
4180_1 0:cc87c48aa43c 141 }
4180_1 0:cc87c48aa43c 142 }