Diff: GameModeFunctions/TempFunctions/TempFunctions.cpp

Revision:

0:0fbe9794df10

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GameModeFunctions/TempFunctions/TempFunctions.cpp	Wed May 04 13:06:09 2016 +0000
@@ -0,0 +1,231 @@
+/** Temperature Sensor Functions
+* Used for printing and updating the temperature at 1Hz with unit conversion capabilities
+@file TempFunctions.cpp
+@brief utilises unit conversion formulae within a while loop to allow for unit change.
+@author Ihsian Mulla
+@date April2016
+*/
+
+//---LIBRARIES--//
+#include "mbed.h"
+#include "beep.h"
+#include "TMP102.h"
+#include "N5110.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "joystick.h"
+
+extern Beep buzzer;
+extern N5110 lcd;
+extern Joystick joystick;
+
+// Create TMP102 object
+TMP102 tmp102(I2C_SDA,I2C_SCL);
+
+// K64F on-board LEDs
+DigitalOut re_led(LED_RED);
+DigitalOut g_led(LED_GREEN);
+DigitalOut b_led(LED_BLUE);
+
+//Sets ticker to allow for timer
+Ticker ticker1;
+
+// K64F on-board switches
+InterruptIn sw2(SW2);
+InterruptIn sw3(SW3);
+Serial pc(USBTX,USBRX);
+
+
+int unit_select = 0; /*!< initialising first switch statement */
+int selector =0; /*!< initialising pointer switch statement */
+int next_unit_select = 0; /*!< used to confirm one transition per trigger on the joystick */
+
+volatile int g_timer_flag = 0;
+
+void timer_isr();// ticker function for temperature sensor
+void error(); // error function hangs flashing an LED
+void init_serial(); // setup serial port
+void init_K64F(); // set-up the on-board LEDs and switches
+void Temp(); // temperature code - finite state machine to transition between temperature units.
+void SwitchMenu();//Allows return to menu from game [prevents having to use NVIC_SystemReset]
+
+void Temp()
+{
+    lcd.init(); //  initialise lcd
+    init_K64F();     // initialise the board
+    init_serial(); // initialise the serial port
+    tmp102.init(); //initialise the tmp102 sensor using dot syntax
+    ticker1.attach(&timer_isr,1.0); // sets to read temp sensor at a frequency of 1Hz using a ticker
+    lcd.normalMode();
+    lcd.setBrightness(0.5); // put LED backlight on 50%
+
+
+    while (1) {
+        //change between units of temperature (Kelvin,Celcius,Farenheit)
+        switch(unit_select) {
+                // -- CELCIUS--//
+            case 0:
+                while(1) {
+                    lcd.clear();
+                    lcd.printString("Current",25,0);
+                    lcd.printString("Temperature:",10,1);
+                    lcd.drawCircle(63,30,1,0);
+                    float T = tmp102.get_temperature();
+                    char Temp1 [20];
+                    sprintf(Temp1,"T = %2.2f  C",T);
+                    lcd.printString (Temp1,2,4);
+                    wait(0.1);
+                    lcd.refresh();
+                    if(joystick.direction==UP) {
+                        selector=1;
+                        break;
+                    } else if(joystick.direction==DOWN) {
+                        selector=2;
+                        break;
+                    } else {
+                        selector=0;
+                        break;
+                    }
+                }
+//makes use of a switch statement within a switch statement to allow for joystick input to state transition
+                switch(selector) {
+                    case 0:
+                        unit_select=3;
+                        next_unit_select=0;
+                        break;
+                    case 1:
+                        unit_select=3;
+                        next_unit_select=2;
+                        break;
+                    case 2:
+                        unit_select=3;
+                        next_unit_select=1;
+                        break;
+                }
+                break;
+                //----Farenheit---//
+            case 1:
+                while(1) {
+                    lcd.clear();
+                    lcd.printString("Current",25,0);
+                    lcd.printString("Temperature:",10,1);
+                    lcd.drawCircle(63,30,1,0);
+                    float T = tmp102.get_temperature();
+                    char Temp2 [20];
+                    sprintf(Temp2,"T = %2.2f  F",((T*1.8)+32));
+                    lcd.printString (Temp2,2,4);
+                    wait(0.1);
+                    lcd.refresh();
+                    if(joystick.direction==UP) {
+                        selector=1;
+                        break;
+                    } else if(joystick.direction==DOWN) {
+                        selector=2;
+                        break;
+                    } else {
+                        selector=0;
+                        break;
+                    }
+                }
+                switch(selector) {
+                    case 0:
+                        unit_select=3;
+                        next_unit_select=1;
+                        break;
+                    case 1:
+                        unit_select=3;
+                        next_unit_select=0;
+                        break;
+                    case 2:
+                        unit_select=3;
+                        next_unit_select=2;
+                        break;
+                }
+                break;
+                //-----KELVIN----//
+            case 2:
+                while(1) {
+                    lcd.clear();
+                    lcd.printString("Current",25,0);
+                    lcd.printString("Temperature:",10,1);
+                    float T = tmp102.get_temperature();
+                    char Temp3 [20];
+                    sprintf(Temp3,"T = %3.2f K",T+273.15);
+                    lcd.printString (Temp3,2,4);
+                    wait(0.1);
+                    lcd.refresh();
+                    if(joystick.direction==UP) {
+                        selector=1;
+                        break;
+                    } else if(joystick.direction==DOWN) {
+                        selector=2;
+                        break;
+                    } else {
+                        selector=0;
+                        break;
+                    }
+                }
+                switch(selector) {
+                    case 0:
+                        unit_select=3;
+                        next_unit_select=2;
+                        break;
+                    case 1:
+                        unit_select=3;
+                        next_unit_select=1;
+                        break;
+                    case 2:
+                        unit_select=3;
+                        next_unit_select=0;
+                        break;
+                }
+                break;
+                // Case to check that there is only a single transition between states per trigger of the joystick
+            case 3:
+                if(joystick.direction==CENTRE) {
+                    unit_select=next_unit_select;
+                } else {
+                    unit_select=3;
+                }
+                break;
+            default:
+                error();  //invalid state - call error routine
+                break;
+        }
+        //wait(0.05);
+        sleep();
+        if (Jbutton==1) {
+            SwitchMenu();
+        }
+    }
+}
+
+
+
+void timer_isr()
+{
+    g_timer_flag = 1;   // set flag in ISR
+}
+
+void init_K64F()
+{
+    // on-board LEDs are active-low, so set pin high to turn them off.
+    re_led = 1;
+    g_led = 1;
+    b_led = 1;
+
+    // since the on-board switches have external pull-ups, we should disable the internal pull-down
+    // resistors that are enabled by default using InterruptIn
+    sw2.mode(PullNone);
+    sw3.mode(PullNone);
+
+}
+
+
+void init_serial()
+{
+    // set to highest baud - ensure terminal software matches
+    pc.baud(115200);
+}
+
+