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#include <SoftwareSerial.h>
/*
Implementes the Morse algorithm for a simple speaker
@author Felix
@date 07.05.2011
*/
int inByte = 0;
int i = 0;
int j = 0;
int char_avail = 0;
/* You can touch this: */
#define DIT_DELAY 50
/* But you cannot touch this: */
#define WORD_DELAY (DIT_DELAY * 7)
#define DIT_CYCLES (DIT_DELAY/2)
#define CHAR_DELAY (DIT_DELAY * 3)
#define dsym() delay(DIT_DELAY);
#define char_delay() delay(CHAR_DELAY);
#define word_delay() delay(WORD_DELAY);
static char* latin_upper[] = {
". -\0" , /* A */
"- . . .\0"
"- . . .\0",
"- . - .\0",
"- . .\0",
".\0",
". . - .\0",
"- - .\0",
". . . .\0",
". .\0",
". - - -\0",
"- . -\0",
". - . .\0",
"- -\0",
"- .\0",
"- - -\0",
". - - .\0",
"- - . -\0",
". - .\0",
". . .\0",
"-\0",
". . -\0",
". . . -\0",
". - -\0",
"- . . -\0",
"- . - -\0",
"- - . .\0" /* Z */
};
static char* numbers[] = {
"- - - - -\0", /* 0 */
". - - - -\0",
". . - - -\0",
". . . - -\0",
". . . . -\0",
". . . . .\0",
"- . . . .\0",
"- - . . .\0",
"- - - . .\0",
"- - - - .\0" /* 9 */
};
void setup() {
// initialize the digital pin as an output.
// Pin 13 has an LED connected on most Arduino boards:
pinMode(13, OUTPUT);
Serial.begin(9600);
}
void loop() {
char_avail = Serial.available();
if(char_avail > 0) {
for (j = 0; j < char_avail;j++)
{
char on_line = Serial.read();
to_beep(on_line);
char_delay();
}
}
}
void to_beep(char data)
{
char* mdata;
if (data == ' ')
{
word_delay();
Serial.println("word end");
return;
}
else{
if (data == '\n') {
word_delay();
Serial.println("EOL");
return;
} else
if (data >= 'A' && data <= 'Z' )
mdata = latin_upper[data-'A'];
else
if (data >= 'a' && data <= 'z' )
mdata = latin_upper[data-'a'];
else
if (data >= '0' && data <= '9')
mdata = numbers[data-'0'];
else
{
Serial.print(data);
Serial.println(": not implemented");
return;
}
}
Serial.println(mdata);
int sdata = strlen( mdata);
for( char i = 0; i < sdata; i ++)
{
char token = mdata[i];
if (token == '.')
{
dit();
}
if (token == '-')
{
dah();
}
if (token == ' ')
{
dsym();
}
}
}
void dah() {
for (int i=0;i<3;i++)
{
dit();
}
}
void dit(){
for (int i=0;i<DIT_CYCLES;i++) // Number of DIT Cycles , sleep 2 milliseconds in a cycle
{
digitalWrite(13, HIGH); // set the LED on
delay(1);
digitalWrite(13, LOW); // set the LED off
delay(1);
}
}
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