Diff: main.cpp

Revision:

1:a87075699085

Parent:

0:d4d7e882c87d

Child:

2:d3676e11e2c6

--- a/main.cpp	Tue Dec 07 03:04:35 2021 +0000
+++ b/main.cpp	Tue Dec 07 05:01:37 2021 +0000
@@ -1,11 +1,17 @@
+/*
+Code for a IoT Temperature reading device.
+Acknowledgements to xxxxx
+**/
+
 #include "mbed.h"
 #include "N5110.h"
 #include "Joystick.h"
 
+//Defines
 AnalogIn pot(PTB2);
 
-
-//      rows,cols
+//LCD Sprite:
+//       rows,cols
 int sprite[8][5] =   {
     { 0,0,1,0,0 },
     { 0,1,1,1,0 },
@@ -20,25 +26,25 @@
 //Objects
 Ticker bl_ticker;
 
-// flag - must be volatile as changes within ISR
-// g_ prefix makes it easier to distinguish it as global
+// Global Volatile Interrupt flags
 volatile int g_bl_timer_flag;
 
-// function prototypes
+// Setup interrupts
 void bl_timer_isr();
 
-//data
+//Data
 float bright;
 
 //Pinouts
-//    VCC,SCE,RST,D/C,MOSI,SCLK,LED
+//        SCE, RST, D/C, MOSI,SCLK,LED
 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);  // K64F - pwr from 3V3
-//                  y     x     button
+//                y     x     button
 Joystick joystick(PTB10,PTB11,PTC16);
 
 
 int main() {
     
+    //Initialise devices
     lcd.init();
     lcd.setContrast(0.4);
     
@@ -46,12 +52,8 @@
     bl_ticker.attach(&bl_timer_isr,0.01);
     
     while (1){
-        //lcd.setBrightness(pot > 0.2f) ? 0.2 : 0;
-        //lcd.setBrightness(pot > 0.4f) ? 0.4 : 0.21;
-       // lcd.setBrightness(pot > 0.6f) ? 0.6 : 0.41;
-        //lcd.setBrightness(pot > 0.8f) ? 0.8 : 0.61;
         
-        
+        //Read pot value and assign to variable
         if(pot > 0.1f) {
             bright = 0.1;
         } if(pot > 0.2f) {
@@ -74,12 +76,12 @@
             bright = 1.0;
         }  
        
-        // check if flag is set i.e. interrupt has occured:
-        //For bl check timer
+        //Check interrupt flags:
+        //LCD backlight interrupt
         if (g_bl_timer_flag) {
-           g_bl_timer_flag = 0;   //if it has, clear the flag
+           g_bl_timer_flag = 0;   //if flag is set, clear
 
-           lcd.setBrightness(bright);
+           lcd.setBrightness(bright); //set brightness based on pot value
         }
                          
     }
@@ -91,3 +93,4 @@
     g_bl_timer_flag = 1;   // set flag in ISR
 }
  
+//Had multiple issues where code isn't changed but comments are added, suddenly defines don't work anymore "not defined"
\ No newline at end of file