Diff: main.cpp

Revision:

4:143487eef742

Parent:

3:d1e1de4a712e

Child:

5:bec67fb2b2f9

--- a/main.cpp	Fri Jan 21 09:37:37 2022 +0000
+++ b/main.cpp	Fri Jan 28 09:37:53 2022 +0000
@@ -1,100 +1,121 @@
-/*
-Code for a IoT Temperature reading device.
-Acknowledgements to Dr Craig A. Evans and Dr Edmond Nurellari.
-**/
+/* 
+* Author - Jack McGarley - 18689007
+* Date - January 2022
+* Acknowledgements 
+* Craig A. Evans, University of Leeds, TMP102 Library, Feb 2016
+* Dr Edmond Nurellari, University of Lincoln, Joystick & N5110 Libraries
+*/ 
 
-#include "mbed.h"
-#include "N5110.h"
-#include "Joystick.h"
+#include "mbed.h" // include the library header, ensure the library has been imported into the project
+#include "Joystick.h" 
 #include "TMP102.h"
+#include "N5110.h"
 
-//Defines
-AnalogIn pot(PTB2);
+DigitalOut grn_led1(PTA1); // Designating LEDs from left to right
+DigitalOut grn_led2(PTA2);
+DigitalOut grn_led3(PTC2);
+DigitalOut red_led1(PTC3);
+DigitalOut red_led2(PTC4);
+DigitalOut red_led3(PTD3);
+ 
 
-//LCD Sprite:
-//       rows,cols
-int sprite[8][5] =   {
-    { 0,0,1,0,0 },
-    { 0,1,1,1,0 },
-    { 0,0,1,0,0 },
-    { 0,1,1,1,0 },
-    { 1,1,1,1,1 },
-    { 1,1,1,1,1 },
-    { 1,1,0,1,1 },
-    { 1,1,0,1,1 },
-};
+DigitalIn button_A(PTB9); // Designating Buttons
+DigitalIn button_B(PTD0);
+DigitalIn button_X(PTC17);
+DigitalIn button_Y(PTC12);
+DigitalIn button_L(PTB18);
+DigitalIn button_R(PTB3);
+DigitalIn button_back(PTB19);
+DigitalIn button_start(PTC5);
+ 
+TMP102 tmp102(I2C_SDA,I2C_SCL); // Create TMP102 object
+ 
 
-//Objects
-Ticker bl_ticker;
+N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);  //Designating N5110 Display
+
+Joystick joystick(PTB10,PTB11,PTC16); //Designating Joystick
 
-// Global Volatile Interrupt flags
-volatile int g_bl_timer_flag;
-
-// Setup interrupts
-void bl_timer_isr();
-
-//Data
-float bright;
+Serial pc(USBTX,USBRX); // UART connection for PC
+ 
+InterruptIn sw2(SW2); // K64F on-board switches
+InterruptIn sw3(SW3);
+ 
+DigitalOut r_led(LED_RED); // K64F on-board LEDs 
+DigitalOut g_led(LED_GRN);
+DigitalOut b_led(LED_BLUE);
+ 
 
-//Pinouts
-//        SCE, RST, D/C, MOSI,SCLK,LED
-N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);  // K64F - pwr from 3V3
-//                y     x     button
-Joystick joystick(PTB10,PTB11,PTC16);
-//I2C      SDA   SCL
-TMP102 tmp(PTE24,PTE25);
+void error(); // error function hangs flashing an LED
+
+void init_serial(); // Setting up the serial port
 
+void init_K64F(); // Setting up the on-board LEDs and switches
 
-int main() {
+void init_leds(); //Setting up the LEDs
+int main()
+{
     
-    //Initialise devices
-    lcd.init();
-    joystick.init();
-    tmp.init();
+    init_K64F(); // Initialising the board, serial port, LED'S and joystick
+    init_serial(); 
+    init_leds();
+    joystick.init();                                                            
+    
+    tmp102.init(); // call the sensor init method using dot syntax
+    
+    
+    lcd.init(); // initialise display
     
-    lcd.setContrast(0.4);
+    
+    lcd.setContrast(0.5); // Sets contrast to 0.5
     
-    //Set up ticker (time in seconds)
-    bl_ticker.attach(&bl_timer_isr,0.01);
-    
-    while (1){
+    while (1) {
+        
+        // these are settings that I have adjusted
+        lcd.normalMode();      // normal colour mode
+        lcd.setBrightness(0.75); // put LED backlight on 75%
+        
         
-        //Read pot value and assign to variable
-        if(pot > 0.1f) {
-            bright = 0.1;
-        } if(pot > 0.2f) {
-            bright = 0.2;
-        } if (pot > 0.3f) {
-            bright = 0.3;
-        } if (pot > 0.4f) {
-            bright = 0.4;
-        } if (pot > 0.5f) {
-            bright = 0.5;
-        } if(pot > 0.6f) {
-            bright = 0.6;
-        } if(pot > 0.7f) {
-            bright = 0.7;
-        } if (pot > 0.8f) {
-            bright = 0.8;
-        } if (pot > 0.9f) {
-            bright = 0.9;
-        } if (pot > 1.0f) {
-            bright = 1.0;
-        }  
-       
-        //Check interrupt flags:
-        //LCD backlight interrupt
-        if (g_bl_timer_flag) {
-           g_bl_timer_flag = 0;   //if flag is set, clear
-
-           lcd.setBrightness(bright); //set brightness based on pot value
-        }
-                         
-    }
+        float T = tmp102.get_temperature(); // read temperature and print over serial port
+        pc.printf("T = %.1f K\n",T);
+     
+        if (T > 37.2) {
+            red_led1.write(0); // LED 1 will flash when you're in High Temp
+            pc.printf("High Temperature \n"); // Printing to the LCD
+            }
+            
+        else if (T < 36.1) {
+            red_led2.write(0); // LED 2 will flash when you're in Low Temp
+            printf("Low Temperature \n"); // Printing to the LCD
+            }   
+        else if (T > 38) {
+            red_led3.write(0); // LED 3 will flash when you're beyond high temperature
+            printf("Call Your GP \n"); // Printing to the LCD
+            }
+            
+}
+ }
+void init_serial() {
+    pc.baud(9600); // set to highest baud - ensure terminal software matches
 }
-
-// time-triggered interrupt for red
-void bl_timer_isr()
+ 
+void init_K64F() 
 {
-    g_bl_timer_flag = 1;   // set flag in ISR
+    r_led = 1; // on-board LEDs are active-low, so set pin high to turn them off.
+    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_leds()
+{
+ red_led1.write(1);  // LEDs are common anode (active-low) so writing a 1 will turn them off
+ red_led2.write(1);
+ red_led3.write(1);
+ grn_led1.write(1);
+ grn_led2.write(1);
+ grn_led3.write(0); // LED on to show the board is on
+}
\ No newline at end of file