Mark Randall
This is a simple class written to flash out morse code. It can be used to flash out data from the terminal or from a buffer
Revision 0:c3c4f0cd78cd, committed 2013-09-18
- Comitter:
- mr63
- Date:
- Wed Sep 18 16:27:24 2013 +0000
- Commit message:
- This is a simple Class that was written to "flash" out Morse Code. It can be used to flash out data from the terminal, or from a buffer. The main function gives examples of both.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MorseCode.cpp Wed Sep 18 16:27:24 2013 +0000
@@ -0,0 +1,132 @@
+#include "mbed.h"
+#include "MorseCode.h"
+float unit = .005;
+
+const char Letters[37][7] = {
+ {2,1,0}, //a
+ {4,0,1,1,1},//b
+ {4,0,1,0,1},//c
+ {3,0,1,1},//d
+ {1,1},//e
+ {4,1,1,0,1},//f
+ {3,0,0,1},//g
+ {4,1,1,1,1},//h
+ {2,1,1},//i
+ {4,1,0,0,0},//j
+ {3,0,1,0},//k
+ {4,1,0,1,1},//l
+ {2,0,0},//m
+ {2,0,1},//n
+ {3,0,0,0},//o
+ {4,1,0,0,1},//p
+ {4,0,0,1,0},//q
+ {3,1,0,1},//r
+ {3,1,1,1},//s
+ {1,0},//t
+ {3,1,1,0},//u
+ {4,1,1,1,0},//v
+ {3,1,0,0},//w
+ {4,0,1,1,0},//x
+ {4,0,1,0,0},//y
+ {4,0,0,1,1},//z
+ {5,0,0,0,0,0},//0
+ {5,1,0,0,0,0},//1
+ {5,1,1,0,0,0},//2
+ {5,1,1,1,0,0},//3
+ {5,1,1,1,1,0},//4
+ {5,1,1,1,1,1},//5
+ {5,0,1,1,1,1},//6
+ {5,0,0,1,1,1},//7
+ {5,0,0,0,1,1},//8
+ {5,0,0,0,0,1},//9
+ {0}//space
+};
+
+
+ MorseCode::MorseCode(PinName pin): _pin(pin) //Constructor
+ {
+
+ }
+
+float MorseCode::get_unit()
+{
+ return (unit);
+}
+void MorseCode::set_unit(float secs)
+{
+ unit = secs;
+}
+
+void MorseCode::blink_buffer (unsigned char* Pbuffer) //Blink out String
+{
+ unsigned char next_letter;
+ unsigned int i=0;
+ while (Pbuffer[i] != 0)
+ {
+ next_letter = Pbuffer[i];
+ Print_ASCII_Char(next_letter);
+ i++;
+ }
+}
+
+
+void MorseCode::blink_letter (unsigned int letter) //Blink out a single Ascii letter
+{
+ if(letter == 36)
+ {
+ wait(unit*4); //space between words (3 + 4 = 7 units)
+ }
+ for(int i = 1; i<(int)((Letters[letter][0])+1);i++)
+ {
+ if(Letters[letter][i])
+ {
+ Dot();
+ }
+ else
+ {
+ Dash();
+ }
+ }
+ wait(unit*3); //space between letters
+}
+
+void MorseCode::Dot() //Sets Blink Duration for Dot
+{
+ _pin=1;
+ wait (unit);
+ _pin = 0;
+ wait (unit);
+}
+
+void MorseCode::Dash() //Sets Blink Duration for Dash
+{
+ _pin =1;
+ wait ((unit * 3.0));
+ _pin = 0;
+ wait (unit);
+}
+
+bool MorseCode::Print_ASCII_Char(unsigned char letter) //Determines if the ASCII value is valid and it calls blink_letter with the correct char value Upper/Lower/Numbers/Space
+{
+ if(letter >= 0x61 && letter <= 0x7a)
+ {
+ blink_letter(letter-0x61); // it is lowercase
+ }
+ else if(letter >= 0x41 && letter <= 0x5a)
+ {
+ blink_letter(letter-0x41); // it is in caps
+ }
+ else if (letter >= 0x30 && letter <= 0x39)
+ {
+ blink_letter(letter-0x22 ); // it is a number
+ }
+ else if (letter == 0x20)
+ {
+ blink_letter(36); //it is a space
+ }
+ else
+ {
+ return(false);
+ }
+ return(true);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MorseCode.h Wed Sep 18 16:27:24 2013 +0000
@@ -0,0 +1,20 @@
+#include "mbed.h"
+
+class MorseCode{
+ public:
+ MorseCode(PinName pin);
+
+ void blink_buffer (unsigned char * Pbuffer);
+ bool Print_ASCII_Char(unsigned char letter);
+ float get_unit();
+ void set_unit(float);
+
+ private :
+ // objects
+ DigitalOut _pin;
+ void blink_letter (unsigned int letter);
+ void Dash();
+ void Dot();
+
+};
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Sep 18 16:27:24 2013 +0000
@@ -0,0 +1,23 @@
+
+#include "MorseCode.h"
+
+Serial pc(USBTX,USBRX);
+MorseCode MC(LED1);
+unsigned char buffer[] = {"Nothing Like Morse Code"};
+
+int main() {
+ unsigned char pcinput = 0;
+ bool Printable = false;
+ MC.set_unit(.05);
+ MC.blink_buffer (buffer);
+ while(1) //Do what ever is between these brackets forever or until the micro is reset.
+ {
+
+ pcinput = pc.getc();
+ Printable=MC.Print_ASCII_Char(pcinput);
+ pc.putc(pcinput);
+
+ }
+}
+
+