bool read_straight_key(ref Keyer_state ks, bool keyed)
{
int i, j;
debounce_buf[debounce_buf_i] = keyed;
debounce_buf_i++;
/* If the debounce buffer is full, determine the state of the key */
if (debounce_buf_i >= ks.debounce)
{
debounce_buf_i = 0;
j = 0;
for (i = 0; i < ks.debounce; i++)
if (debounce_buf[i])
j++;
keystate = (j > ks.debounce / 2) ? 1 : 0;
}
if (keystate == 1)
return true;
else
return false;
}
void KeyerInit(bool niambic, float wpm)
{
kl = new KeyerLogic();
ks = new Keyer_state();
ks.flag.iambic = niambic;
ks.flag.autospace.khar = ks.flag.autospace.word = false;
ks.flag.mdlmdB = true;
ks.flag.memory.dah = true;
ks.flag.memory.dit = true;
ks.debounce = 2; // could be more if sampled faster
ks.mode = MODE_B;
ks.weight = (int)MainForm.SetupForm.udCWWeight.Value;
ks.wpm = wpm;
iambic = niambic;
TONE_SIZE = 192 * (int)(Audio.SampleRate / 48000.0);
}
bool read_iambic_key(ref Keyer_state ks, bool dot, bool dash, ref KeyerLogic kl, float ticklen)
{
int i, j;
int dah = 0, dit = 0;
dah_debounce_buf[debounce_buf_i] = dash;
dit_debounce_buf[debounce_buf_i] = dot;
debounce_buf_i++;
//***************************************************
// back to business as usual
//***************************************************
/* If the debounce buffer is full, determine the state of the keys */
if (debounce_buf_i >= ks.debounce)
{
debounce_buf_i = 0;
j = 0;
for (i = 0; i < ks.debounce; i++)
{
if (dah_debounce_buf[i])
j++;
}
dah = (j > ks.debounce / 2) ? 1 : 0;
j = 0;
for (i = 0; i < ks.debounce; i++)
{
if (dit_debounce_buf[i])
j++;
}
dit = (j > ks.debounce / 2) ? 1 : 0;
}
return klogic(ref kl,
dit,
dah,
ks.wpm,
ks.mode,
ks.flag.mdlmdB,
ks.flag.memory.dit,
ks.flag.memory.dah,
ks.flag.autospace.khar,
ks.flag.autospace.word, ks.weight, ticklen);
}
