From 4064a2b0d88c8bd21afe1de7cc4f581e0d8281d0 Mon Sep 17 00:00:00 2001
From: Dan <ICYN30@gmail.com>
Date: Mon, 12 Sep 2022 21:36:37 -0400
Subject: [PATCH] Reworked IR code so it's 32 bits. Added comments. Added
 start/stop bit logic.

---
 src/main.cpp | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 3c768b5..8c77e26 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,11 +1,14 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
-#include <avr/delay.h>
+#include <util/delay.h>
 
-// unsigned long CODE = 0b10011111111100100100100100100100100100111111001110010010010010011; //65 bits
-int code = 111111111000000001111112111000011 ;
+//32 bit code
+int code = 0b11111111100000000111111011100001;
+
+//length of each bit
 #define BIT_LENGTH 10
 
+//Generates the carrier requency for the supplied timeframe
 void carrier(int BlastTime) {
   for(int i=0; i<(BlastTime / 2); i++)
   {
@@ -17,20 +20,31 @@ void carrier(int BlastTime) {
   return;
 }
 
+// send '1' bit
 int sendShort(void){
   carrier(BIT_LENGTH);
   _delay_ms(BIT_LENGTH);
   return 0;
 }
 
+// send '0/ bit
 int sendLong(void){
+  _delay_ms(BIT_LENGTH);
   carrier(BIT_LENGTH);
-  _delay_ms(BIT_LENGTH*3);
+  _delay_ms(BIT_LENGTH);
+  return 0;
 }
 
+//Send the entire code including init, start, and end bits
 void sendBlast(void) { 
   carrier(20);
   _delay_ms(20);
+
+  //start bit
+  sendShort();
+  _delay_ms(BIT_LENGTH);
+
+  //Start 32 bit Code
   for (int i=0; i<9;i++){
     sendShort();
   }
@@ -40,7 +54,6 @@ void sendBlast(void) {
   for (int i=0;i<6;i++){
     sendShort();
   }
-  _delay_ms(BIT_LENGTH);
   for (int i=0;i<3;i++){
     sendShort();
   }
@@ -50,8 +63,8 @@ void sendBlast(void) {
   for(int i=0;i<2;i++){
     sendShort();
   }
-
-
+  //stop bit
+  sendShort();
 }
 
 int main(void) {
@@ -62,14 +75,12 @@ int main(void) {
 
   while(true)
   {
-    if ((PINB & (1 << 0x01)) == 0)
-    {
+    if ((PINB & (1 << 0x01)) == 0){ //if the button is pushed start sending code
       sendBlast();
     }
     else {
-      PORTB &= ~(1 << 0x04);
+      PORTB &= ~(1 << 0x04); //if the button is not pushed make sure PB4 is off
     }
   }
-
 }