public void Dispose()
{
//WiringPi.WiringPiISRCancel(ECHOPin);
WiringPi.PinMode(TRIGPin, WiringPiConst.Output);
WiringPi.DigitalWrite(TRIGPin, WiringPiConst.Low);
WiringPi.PinMode(TRIGPin, WiringPiConst.Input);
}
public HCSR04Sensor(int trigPin, int echoPin)
{
TRIGPin = trigPin;
ECHOPin = echoPin;
WiringPi.PinMode(TRIGPin, WiringPiConst.Output);
WiringPi.WiringPiISR(ECHOPin, WiringPiConst.IntEdgeBoth, OnIsrEcho);
}
public void StartDistanceMeas()
{
_dataValid = false;
Distance = 0.0f;
WiringPi.DigitalWrite(TRIGPin, WiringPiConst.High);
Thread.Sleep(200);
//start impulse
WiringPi.DigitalWrite(TRIGPin, WiringPiConst.Low);
}
public void Dispose()
{
WiringPi.DigitalWrite(_display.CLKPin, WiringPiConst.Low);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.DIOPin, WiringPiConst.Low);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.CLKPin, WiringPiConst.High);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.DIOPin, WiringPiConst.High);
}
public TM1637Display(int clockPin, int dataPin, int brightnessPercent)
{
CLKPin = clockPin;
DIOPin = dataPin;
Reset();
WiringPi.PinMode(CLKPin, WiringPiConst.Output);
WiringPi.PinMode(DIOPin, WiringPiConst.Output);
WiringPi.PullUpDnControl(DIOPin, WiringPiConst.PudUp);
// clearing display included
BrightnessPercent = brightnessPercent;
}
public WriteSection(TM1637Display display)
{
_display = display;
WiringPi.DigitalWrite(_display.CLKPin, WiringPiConst.High);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.DIOPin, WiringPiConst.High);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.DIOPin, WiringPiConst.Low);
WiringPi.DelayMicroseconds(1);
WiringPi.DigitalWrite(_display.CLKPin, WiringPiConst.Low);
}
private void OnIsrEcho()
{
int now = WiringPi.Micros();
if (WiringPi.DigitalRead(ECHOPin) == WiringPiConst.High)
{
_startTime = now;
}
else
{
_endTime = now;
_dataValid = true;
}
}
public void Read()
{
for (Tries = 1; Tries < Retries + 1; Tries++)
{
WiringPi.PinMode(DataPin, WiringPiConst.Output);
WiringPi.DigitalWrite(DataPin, WiringPiConst.Low);
WiringPi.DelayMicroseconds(20000);
WiringPi.DigitalWrite(DataPin, WiringPiConst.High);
WiringPi.DelayMicroseconds(30);
WiringPi.PinMode(DataPin, WiringPiConst.Input);
// Chip start to transfer
int state = WiringPi.DigitalRead(DataPin);
int lastState = WiringPiConst.High;
for (int i = 0; i < MaxTransferReads; i++)
{
int readCounter = 0;
do
{
readCounter++;
lastState = state;
WiringPi.DelayMicroseconds(1);
state = WiringPi.DigitalRead(DataPin);
} while (!(lastState == WiringPiConst.High && state == WiringPiConst.Low) && readCounter < 100);
// --> High->Low trigger
lastState = WiringPiConst.Low;
_timeOfChange[i] = WiringPi.Micros();
}
GetDHTData(1);
if (IsDataValid)
{
break;
}
else
{
Thread.Sleep(400);
}
}
}
private void WriteByte(byte data)
{
byte mask = 0x01;
for (int bit = 0; bit < 8; bit++)
{
WiringPi.DigitalWrite(CLKPin, WiringPiConst.Low);
WiringPi.DigitalWrite(DIOPin, (data & 1 << bit) > 0 ? WiringPiConst.High : WiringPiConst.Low);
mask <<= 1;
WiringPi.DigitalWrite(CLKPin, WiringPiConst.High);
WiringPi.DelayMicroseconds(1);
}
// switch DIO to input for ACK reading
WiringPi.PinMode(DIOPin, WiringPiConst.Input);
// reset DIO before set to output
WiringPi.DigitalWrite(DIOPin, WiringPiConst.Low);
// start ACK reading
WiringPi.DigitalWrite(CLKPin, WiringPiConst.Low);
ACKErr = true;
for (int readTry = 1; readTry <= 100; readTry++)
{
// read/wait ACK (max. 100us)
if (WiringPi.DigitalRead(DIOPin) == WiringPiConst.High)
{
WiringPi.DelayMicroseconds(1);
}
else
{
ACKErr = false;
break;
}
}
WiringPi.DigitalWrite(CLKPin, WiringPiConst.High);
WiringPi.PinMode(DIOPin, WiringPiConst.Output);
WiringPi.DigitalWrite(CLKPin, WiringPiConst.Low);
}
