Create Isobot.cpp

library/Isobot.cpp

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+#include "Arduino.h"
+#include "Isobot.h"
+
+//As you can see, the below is borrowed but I cut it down to do send commands only
+
+//Isobot IR decoder and Controller
+//Written by Miles Moody
+//Isobot IR protocol works as follows
+//carrier freq of about 38khz
+//header pulse of 2550 micros high
+//22 data bits=4 for channel number, 18 for button number
+//highs carry no info and are 550 micros each
+//lows are logic 0 if 550 micros, logic 1 if 1050 micros
+//at end of stream or in between, 205 millis low
+//NOTE: my ir reciever pin goes low when it detects high signal
+//      and stays high when nothing is being recieved
+//      that could cause some confusion
+
+//-------------------info about bits-------------------------------
+#define totallength 22            //number of highs=bits 4 channel +18 command
+#define channelstart 0
+#define commandstart 4       //bit where command starts
+#define channellength  4
+#define commandlength  18
+//---------determined empirically--------------
+#define headerlower 2300     //lower limit
+#define headernom 2550       //nominal
+#define headerupper 2800     //upper limit
+#define zerolower 300
+#define zeronom 380          //nominal
+#define zeroupper 650
+#define onelower 800
+#define onenom 850          //nominal
+#define oneupper 1100
+#define highnom 630
+
+bool bit2[22]={};
+
+//Constructors
+Isobot::Isobot(int txpin){
+   pinMode(txpin, OUTPUT);
+   TXpin=txpin;
+}
+Isobot::Isobot(int txpin, int rxpin){
+   pinMode(txpin, OUTPUT);
+   pinMode(rxpin, INPUT);
+   TXpin=txpin;
+   RXpin=rxpin;
+}
+
+//functions
+void Isobot::oscWrite(int time){
+for(int i = 0; i < (time / 28) - 1; i++){          //prescaler at 28 for 16mhz, 52 at 8mhz, ? for 20mhz
+   digitalWrite(TXpin, HIGH);
+   delayMicroseconds(13);
+   digitalWrite(TXpin, LOW);
+   delayMicroseconds(13);
+ }
+}
+
+unsigned long Isobot::power2(int power){    //gives 2 to the int(power)
+   unsigned long integer=1;                //apparently both bitshifting and pow functions had problems
+ for (int i=0; i<power; i++){              //so I made my own
+   integer*=2;
+ }
+ return integer;
+}
+
+void Isobot::buttonwrite(unsigned long integer, int numoftimes){      //same as above but repeats numoftimes
+   Serial.println("buttonwrite running");
+
+ ItoB(integer, 22);                                      
+ for (int n=0;n<numoftimes;n++){
+   oscWrite(headernom);
+   for(int i=0;i<totallength;i++){
+       if (bit2[i]==0)delayMicroseconds(zeronom);
+       else delayMicroseconds(onenom);
+       oscWrite(highnom);
+   }
+ delay(205);
+ }
+}
+
+void Isobot::ItoB(unsigned long integer, int length){                //needs bit2[length]
+ for (int i=0; i<length; i++){
+   if ((integer / power2(length-1-i))==1){
+     integer-=power2(length-1-i);
+     bit2[i]=1;
+   }
+   else bit2[i]=0;
+ }
+}
+
+