public static void Main()
{
// Outputs:
// - Buzzer (GPIO D3)
// - Segment7 (7-Segment display/74HC595 IC) (SPI D4, D7, D8)
// - Led1 (PWM D5)
// - Led2 (PWM D6)
#region "Output definitions"
// The buzzer is connected directly to GPIO pin D3
BitBangBuzzer Buzzer = new BitBangBuzzer(Pins.GPIO_PIN_D3);
// The 7-segment display is connected with a 74HC595 bitshift IC over GPIO pins D4 (MOSI), D7 (CS) and D8 (SCLK)
Ic74hc595 Mux = new Ic74hc595(Pins.GPIO_PIN_D8, Pins.GPIO_PIN_D4, Pins.GPIO_PIN_D7);
SevenSegment Segment7 = new SevenSegment(Mux.CreateParallelOut());
// The DangerShield has the digits defined differently; these bits are used:
// Top = 1
// UpperRight = 2
// LowerRight = 3
// Bottom = 4
// LowerLeft = 5
// UpperLeft = 6
// Middle = 7
// Dot = 8
Segment7.ChangeSignals(new byte[] { // (87654321)
0x3f, // 0 brights up: 0 1 2 3 4 5 (00111111)
0x06, // 1 brights up: 1 2 (00000110)
0x5b, // 2 brights up: 0 1 3 4 6 (01011011)
0x4f, // 3 brights up: 0 1 2 3 6 (01001111)
0x66, // 4 brights up: 1 2 5 6 (01100110)
0x6d, // 5 brights up: 0 2 3 5 6 (01101101)
0x7d, // 6 brights up: 0 2 3 4 5 6 (01111101)
0x07, // 7 brights up: 0 1 2 (00000111)
0x7f, // 8 brights up: 0 1 2 3 4 5 6 (01111111)
0x6f, // 9 brights up: 0 1 2 3 5 6 (01101111)
0x00, // all go down: 0 1 2 4 5 6 7 (00000000)
});
Segment7.ChangeDotSignal(8);
// Both leds
IPWMPort Led1 = new Netduino.PWM(Pins.GPIO_PIN_D5);
Led1.StartPulse();
IPWMPort Led2 = new Netduino.PWM(Pins.GPIO_PIN_D6);
Led2.StartPulse();
#endregion
// Inputs:
// - PotentioMeter1 (ADC A0)
// - PotentioMeter2 (ADC A1)
// - PotentioMeter3 (ADC A2)
// - Photocell (ADC A3)
// - TemperatureSensor (ADC A4)
// - KnockSensor (ADC A5)
// - PushButton1 (GPIO D10)
// - PushButton2 (GPIO D11)
// - PushButton3 (GPIO D12)
#region "Input definitions"
// Potentio meters
IADCPort PotentioMeter1 = new Netduino.ADC(Pins.GPIO_PIN_A0);
PotentioMeter1.RangeSet(0, 100); // Same range as Led1.SetDutyCycle()
IADCPort PotentioMeter2 = new Netduino.ADC(Pins.GPIO_PIN_A1);
PotentioMeter2.RangeSet(0, 100); // Same range as Led2.SetDutyCycle()
IADCPort PotentioMeter3 = new Netduino.ADC(Pins.GPIO_PIN_A2);
PotentioMeter3.RangeSet(0, 9); // Same range as Segment7.SetDigit()
// Photocell
IADCPort Photocell = new Netduino.ADC(Pins.GPIO_PIN_A3);
Photocell.RangeSet(0, 100); // Same range as Led2.SetDutyCycle()
// Temperature Sensor
Tmp36 TemperatureSensor = new Tmp36(new Netduino.ADC(Pins.GPIO_PIN_A4));
// Knock Sensor
IADCPort KnockSensor = new Netduino.ADC(Pins.GPIO_PIN_A5);
KnockSensor.RangeSet(0, 200); // Bigger range as Led1.SetDutyCycle() but you really need to smash hard to reach this value
// Push buttons
InputPort PushButton1 = new InputPort(Pins.GPIO_PIN_D10, false, Port.ResistorMode.Disabled);
InputPort PushButton2 = new InputPort(Pins.GPIO_PIN_D11, false, Port.ResistorMode.Disabled);
InputPort PushButton3 = new InputPort(Pins.GPIO_PIN_D12, false, Port.ResistorMode.Disabled);
#endregion
// This value contains which demo is currently active
int Demo = 1;
// Contains the last second, so we can switch between two numbers on the 7-segment display (to display the temperature)
int LastSecond = Utility.GetMachineTime().Seconds;
// This digit should be currently shown
bool ShowSecondDigit = false;
// Infinite loop
while (true)
{
// Switches the demo, when required (NOT statement because of the pullup resistors)
if (!PushButton1.Read())
{
Demo = 1;
}
if (!PushButton2.Read())
{
Demo = 2;
}
if (Demo == 1)
{
// First demo is currently active
Led1.SetDutyCycle((uint)PotentioMeter1.RangeRead());
Led2.SetDutyCycle((uint)PotentioMeter2.RangeRead());
Segment7.SetDigit((byte)PotentioMeter3.RangeRead());
}
else
{
// Second demo is currently active
uint Knocking = (uint)KnockSensor.RangeRead();
Led1.SetDutyCycle((uint)(Knocking > 100 ? 100 : Knocking)); // We want to limit to 100
Led1.SetDutyCycle((uint)KnockSensor.RangeRead());
Led2.SetDutyCycle((uint)Photocell.RangeRead());
// Okay, we want two temperature digits seprated, for display purposes
float Temp = TemperatureSensor.Temperature;
byte Digit1 = (byte)(Temp / 10);
byte Digit0 = (byte)(Temp - (10 * Digit1));
// Switch the digit to be displayed
if (LastSecond != Utility.GetMachineTime().Seconds)
{
LastSecond = Utility.GetMachineTime().Seconds;
Segment7.SetDigit(ShowSecondDigit ? Digit1 : Digit0);
Segment7.SetDot(!ShowSecondDigit);
ShowSecondDigit = !ShowSecondDigit;
}
}
// Links the buzzer to the 3rd pushbutton's value
Buzzer.Write(!PushButton3.Read());
}
}
public static void Main()
{
#if SD_ENABLED
// If your Netduino can't execute the next line of code, make sure you got at least firmware 4.1.1 beta 1
// See also: http://forums.netduino.com/index.php?/topic/1592-netduino-firmware-v411-beta-1/
StorageDevice.MountSD("SD", SPI_Devices.SPI1, Pins.GPIO_PIN_D10);
// Determines the filename
string filename = "";
int index = 0;
do
{
filename = @"\SD\LOGGER" + Tools.ZeroFill(index, 2) + ".CSV";
++index;
}while (File.Exists(filename));
// Starts writing to the file
FileStream stream = new FileStream(filename, FileMode.OpenOrCreate, FileAccess.Write);
StreamWriter writer = new StreamWriter(stream);
// Writes file headers
writer.WriteLine("ticks,datetime,light,temp");
#endif
// LEDs
OutputPort red = new OutputPort(Pins.GPIO_PIN_D2, false);
OutputPort green = new OutputPort(Pins.GPIO_PIN_D3, false);
// An analog light sensor
IADCPort light = new Netduino.ADC(Pins.GPIO_PIN_A0);
light.RangeSet(0, 1024);
// An analog temperature sensor
Tmp36 temperature = new Tmp36(new Netduino.ADC(Pins.GPIO_PIN_A1));
// Time module (comment out SetTime once, to set the clock)
DS1307 time = new DS1307();
/*time.SetTime(
* Day: 11,
* Month: 8,
* Year: 2012,
* Hour: 12,
* Minute: 0,
* Second: 0
* );*/
time.Synchronize();
while (true)
{
// Green status LED ON
green.Write(true);
// Builds the output
string output = "";
output += DateTime.Now.Ticks.ToString() + ", ";
output += DateTime.Now.ToString() + ", ";
output += light.RangeRead().ToString() + ", ";
output += temperature.Temperature.ToString();
// Prints the output to the debugger
Debug.Print(output);
#if SD_ENABLED
// Writes the output to the SD buffer
writer.WriteLine(output);
#endif
// Green status LED OFF, Red status LED ON
green.Write(false);
red.Write(true);
#if SD_ENABLED
// Flushes the buffers to the SD card
writer.Flush();
stream.Flush();
#endif
// Red status LED OFF
red.Write(false);
// Sleeps for a second
Thread.Sleep(1000);
}
}