// Public: Play entire song and wait till song finishes
void WtvPadawan::playVoice(unsigned int voiceNumber){
sendCommand(voiceNumber);
// Wait 20ms for busy to be active
delayMicros(20000);
// Wait till song ends
_busyPinState=digitalRead(_busyPin);
while(_busyPinState==HIGH){
_busyPinState=digitalRead(_busyPin);
}
}
// Private: Send command to sound module
void WtvPadawan::sendCommand(unsigned int command) {
//Start bit Low level pulse.
digitalWrite(_clockPin, LOW);
// Initialize timer
delayMicros(0);
// Wait Start bit length minus 50 us
delayMicros(1950);
for (unsigned int mask = 0x8000; mask > 0; mask >>= 1) {
//Clock low level pulse.
digitalWrite(_clockPin, LOW);
delayMicros(50);
//Write data setup.
if (command & mask) {
digitalWrite(_dataPin, HIGH);
} else {
digitalWrite(_dataPin, LOW);
}
//Write data hold.
delayMicros(50);
//Clock high level pulse.
digitalWrite(_clockPin, HIGH);
delayMicros(100);
}
//Stop bit high level pulse (additional 1900us).
delayMicros(1900);
}
// TODO: return value converted to mm distance length
word dist_read(void) {
PACNT = 0; // Reset pulse accumulator count
PAFLG = PAFLG_PAIF_MASK; // Clear interrupt edge flag by writing a one to it
// Generate 10us trigger pulse
TRIG_PIN = 1;
delayMicros(10);
TRIG_PIN = 0;
while(!PAFLG_PAIF); // Wait for falling edge on echo pin
// Check in case of PACNT overflow
if(PAFLG_PAOVF) {
PAFLG = PAFLG_PAOVF_MASK; // Clear overflow flag by writing a one to it
return 0;
}
return PACNT;
}
WtvPadawan::WtvPadawan(int clockPin,int dataPin,int busyPin)
{
// Save private values from constructor
_clockPin=clockPin;
_dataPin=dataPin;
_busyPin=busyPin;
// Set initial values
_busyPinState=HIGH;
_currentVolume = VOLUME_MAX;
// Initialize timer
_lastMicros = 0;
delayMicros(0);
// Set pins
pinMode(_clockPin, OUTPUT);
pinMode(_dataPin, OUTPUT);
pinMode(_busyPin, INPUT);
}
Wtv::Wtv(int clockPin,int dataPin)
{
// Save private values from constructor
_clockPin=clockPin;
_dataPin=dataPin;
// Set initial values
_currentVolume = VOLUME_MAX;
// Initialize timer
_lastMicros = 0;
delayMicros(0);
// Set pins
pinMode(_clockPin, OUTPUT);
pinMode(_dataPin, OUTPUT);
}
// delay for given milli seconds
void delay(unsigned long t) {
delayMicros(t * 1000);
}