int KeyingGetNextAction()
{
if(keyerLastAction==KEYER_ACTION_DOT)
{
if(!(KEY_IN_PORT_PIN & _BV(KEY_DASH)))
{
keyerLastAction=KEYER_ACTION_DASH;
KeyingSetSymbol(3);
ToneStart();
}
else if(!(KEY_IN_PORT_PIN & _BV(KEY_DOT)))
{
keyerLastAction=KEYER_ACTION_DOT;
KeyingSetSymbol(1);
ToneStart();
}
else
{
keyerLastAction=KEYER_ACTION_NONE;
}
}
else if(keyerLastAction==KEYER_ACTION_DASH)
{
if(!(KEY_IN_PORT_PIN & _BV(KEY_DOT)))
{
keyerLastAction=KEYER_ACTION_DOT;
KeyingSetSymbol(1);
ToneStart();
}
else if(!(KEY_IN_PORT_PIN & _BV(KEY_DASH)))
{
keyerLastAction=KEYER_ACTION_DASH;
KeyingSetSymbol(3);
ToneStart();
}
else
{
keyerLastAction=KEYER_ACTION_NONE;
}
}
else
{
keyerLastAction=KEYER_ACTION_NONE;
}
return(SUCCESS);
}
int KeyingProcess()
{
switch(keyerLastAction)
{
case KEYER_ACTION_NONE:
if(!(KEY_IN_PORT_PIN & _BV(KEY_DOT)))
{
KeyingSetSymbol(1);
ToneStart();
keyerLastAction=KEYER_ACTION_DOT;
}
else
{
if(!(KEY_IN_PORT_PIN & _BV(KEY_DASH)))
{
KeyingSetSymbol(3);
ToneStart();
keyerLastAction=KEYER_ACTION_DASH;
}
else
{
ToneStop();
}
}
break;
case KEYER_ACTION_DOT:
case KEYER_ACTION_DASH:
if(TIFR1 & _BV(OCF1B))
{
//end of symbol
KeyingGetNextAction();
}
else if(TIFR1 & _BV(OCF1A))
{
//endo of tone
ToneStop();
}
break;
default:
INDICATOR_LED_PORT &= ~_BV(INDICATOR_LED_RED);
}
return(SUCCESS);
}
void process_tone( void )
{
static unsigned long tone_start_time;
static unsigned int tone_count;
unsigned long time_now = millis();
switch( tone_state )
{
case TONE_IDLE:
// nothing to do
break;
case TONE_START:
/* start output at tones[tone_playing].frequency */
ToneStart( tone_playing.frequency );
tone_start_time = time_now;
tone_count = tone_playing.repeats;
tone_state = TONE_PLAYING;
break;
case TONE_PLAYING:
if( (time_now-tone_start_time) >= tone_playing.duration_ms )
{
ToneStop();
if( (tone_playing.pause_ms > 0) && (tone_count != 0) )
{
tone_start_time = time_now;
tone_state = TONE_GAP;
}
else
{
tone_state = TONE_IDLE;
}
}
break;
case TONE_GAP:
if( (time_now-tone_start_time) >= tone_playing.pause_ms )
{
/* we should only have come into this state if there was another
* repeat so we restart the tone. The 'if' below is precautionary.
*/
if( tone_count > 0 )
tone_count--;
tone_start_time = time_now;
/* start tone */
tone_state = TONE_PLAYING;
}
break;
}
}
