aggiunte librerie

Author: andrea1388

programmaprincipale/Raspberry.IO.Components/Clocks/Ds1307Connection.cs

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+using System;
+using System.Collections.Generic;
+using Raspberry.IO.InterIntegratedCircuit;
+using System.Collections;
+
+namespace Raspberry.IO.Components.Clocks.Ds1307
+{
+    /// <summary>
+    /// Provides functionality for the DS1307 Real-Time Clock.
+    /// </summary>
+    /// <remarks>
+    /// The Clock Module needs to be modified to work with the Raspberry Pi
+    /// according to this article: http://electronics.stackexchange.com/questions/98361/how-to-modify-ds1307-rtc-to-use-3-3v-for-raspberry-pi
+    /// The Datasheet can be found here: http://www.alldatasheet.com/datasheet-pdf/pdf/58481/DALLAS/DS1307.html (the Memory Map
+    /// is on Page 5. Note that the values in RAM are stored in Nibbles).
+    /// </remarks>
+    public class Ds1307Connection
+    {
+        public I2cDeviceConnection Connection { get; set; }
+
+        /// <summary>
+        /// Creates a new instance of the class using the provided I2C Connection.
+        /// </summary>
+        /// <param name="connection">I2C Connection to the Clock.</param>
+        public Ds1307Connection(I2cDeviceConnection connection)
+        {
+            Connection = connection;
+        }
+
+        /// <summary>
+        /// Reads the Seconds-byte (first byte in the RAM) from the Clock and returns it.
+        /// </summary>
+        /// <returns>The Seconds-Byte including the CH-Flag in bit 7.</returns>
+        private byte ReadSeconds()
+        {
+            Connection.Write(0x00);
+            return Connection.ReadByte();
+        }
+
+        /// <summary>
+        /// Reads 7 bytes from the Clock and returns them.
+        /// </summary>
+        /// <returns>7 Bytes from the Clock.</returns>
+        private byte[] ReadAll()
+        {
+            Connection.Write(0x00);
+            return Connection.Read(7);
+        }
+
+        /// <summary>
+        /// Reads the Date and Time from the Ds1307 and returns it.
+        /// </summary>
+        /// <returns>Date.</returns>
+        public DateTime GetDate()
+        {
+            return GetDate(ReadAll());
+        }
+
+        /// <summary>
+        /// Converts the provided bytes to a DateTime.
+        /// </summary>
+        /// <param name="input">Bytes that should be converted.</param>
+        /// <returns>DateTime resulting from the bytes.</returns>
+        private DateTime GetDate(byte[] input)
+        {
+            /* Byte 1: CH-Flag + Seconds (00-59)
+             * Byte 2: Minutes (00-59)
+             * Byte 3: 12/24-Flag, AM/PM, Hours (01-12 or 00-23)
+             * Byte 4: Day of week (1-7)
+             * Byte 5: Day (01-31)
+             * Byte 6: Month (01-12)
+             * Byte 7: Year (00-99)
+             * Byte 8: Control Register (for enabling/disabling Sqare Wave)
+             */
+
+            int seconds = input[0];
+            if (!IsRtcEnabled(input[0])) seconds = seconds - 128;  // Remove "CH"-bit from the seconds if present 
+
+            seconds = NibbleToInt((byte)seconds);
+
+            int minutes = NibbleToInt(input[1]);
+            int hours = NibbleToInt(input[2]);
+
+            if ((hours & 64) == 64)
+            {
+                throw new NotImplementedException("AM/PM Time is currently not supported.");
+                // 12 h Format
+                //if ((hours & 32) == 32)
+                //{
+                //    //PM
+                //}
+                //else
+                //{
+                //    //AM
+                //}
+            }
+
+            int dayOfWeek = NibbleToInt(input[3]);
+
+            int day = NibbleToInt(input[4]);
+            int month = NibbleToInt(input[5]);
+            int year = NibbleToInt(input[6]);
+
+            if (year == 0) return new DateTime();
+
+            return new DateTime(year + 2000, month, day, hours, minutes, seconds);
+        }
+
+        /// <summary>
+        /// Writes the provided Date and Time to the Ds1307.
+        /// </summary>
+        /// <param name="date">The Date that should be set.</param>
+        public void SetDate(DateTime date)
+        {
+            List<byte> toWrite = new List<byte>();
+
+            toWrite.Add(0x00);
+            toWrite.Add(SetEnabledDisableRtc(IntToNibble(date.Second), !IsRtcEnabled()));
+            toWrite.Add(IntToNibble(date.Minute));
+            toWrite.Add(IntToNibble(date.Hour));
+            toWrite.Add(Convert.ToByte(date.DayOfWeek));
+            toWrite.Add(IntToNibble(date.Day));
+            toWrite.Add(IntToNibble(date.Month));
+            toWrite.Add(IntToNibble(Convert.ToInt16(date.ToString("yy"), 10)));
+
+            Connection.Write(toWrite.ToArray());
+        }
+
+        /// <summary>
+        /// Enables the Clock.
+        /// </summary>
+        public void EnableRtc()
+        {
+            // CH=1: Disabled, CH=0: Enabled
+            byte seconds = ReadSeconds();
+            if (IsRtcEnabled(seconds)) return;
+
+            Connection.Write(0x00, SetEnabledDisableRtc(seconds, false));
+        }
+
+        /// <summary>
+        /// Disables the Clock. When the Clock is diabled, it not ticking.
+        /// </summary>
+        public void DisableRtc()
+        {
+            byte seconds = ReadSeconds();
+            if (!IsRtcEnabled(seconds)) return;
+
+            Connection.Write(0x00, SetEnabledDisableRtc(seconds, true));
+        }
+
+        /// <summary>
+        /// Disables or enables the Clock.
+        /// </summary>
+        /// <param name="seconds">The byte that contains the seconds and the CH-Flag.</param>
+        /// <param name="disable">true will disable the Clock, false will enable it.</param>
+        /// <returns></returns>
+        /// <remarks>The disable/enabled-Flag is stored in bit 7 within the seconds-byte.</remarks>
+        private byte SetEnabledDisableRtc(byte seconds, bool disable)
+        {
+            BitArray bits = new BitArray(new byte[] { seconds });
+            bits.Set(7, disable);
+
+            byte[] result = new byte[1];
+            bits.CopyTo(result, 0);
+
+            return result[0];
+        }
+
+        /// <summary>
+        /// Returns true, if the Clock is enabled, otherwise false is returned.
+        /// </summary>
+        /// <returns>true: Clock is enabled, false: Clock is diabled.</returns>
+        public bool IsRtcEnabled()
+        {
+            return IsRtcEnabled(ReadSeconds());
+        }
+
+        /// <summary>
+        /// Returns true, if the Clock is enabled, otherwise false.
+        /// </summary>
+        /// <param name="seconds">The byte, that contains the seconds and the CH-Flag.</param>
+        /// <returns>true: Clock is enabled, false: Clock is diabled.</returns>
+        private bool IsRtcEnabled(byte seconds)
+        {
+            return !((seconds & 128) == 128);
+        }
+
+        /// <summary>
+        /// Resets the Clock to the Factory Defaults.
+        /// </summary>
+        public void ResetToFactoryDefaults()
+        {
+            // The Factory Default is: 80,00,00,01,01,01,00,B3
+            Connection.Write(0x00, 0x80, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00);
+        }
+
+        /// <summary>
+        /// Writes the current System Date to the Clock.
+        /// </summary>
+        public void SystemTimeToRtc()
+        {
+            SetDate(DateTime.Now);
+        }
+
+        /// <summary>
+        /// Converts the specified two-nibble-byte to an integer.
+        /// </summary>
+        /// <param name="nibble">Nibble that should be converted.</param>
+        /// <returns>Integer representation of the nibble.</returns>
+        private static int NibbleToInt(byte nibble)
+        {
+            int result = 0;
+            result *= 100;
+            result += (10 * (nibble >> 4));
+            result += nibble & 0xf;
+            return result;
+        }
+
+        /// <summary>
+        /// Converts the specified integer to a two-nibble-byte.
+        /// </summary>
+        /// <param name="number">The integer that should be converted. Maximum is 99.</param>
+        /// <returns>A byte with two nibbles that contains the integer.</returns>
+        private static byte IntToNibble(int number)
+        {
+            int bcd = 0;
+            for (int digit = 0; digit < 4; ++digit)
+            {
+                int nibble = number % 10;
+                bcd |= nibble << (digit * 4);
+                number /= 10;
+            }
+            return (byte)(bcd & 0xff);
+        }
+    }
+}

programmaprincipale/Raspberry.IO.Components/Controllers/HT16K33/HT16K33Connection.cs

@@ -0,0 +1,157 @@
+//Copyright (c) 2016 Logic Ethos Ltd
+//
+//Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+//The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+using System;
+using Common.Logging;
+using Raspberry.IO.InterIntegratedCircuit;
+using Raspberry.Timers;
+using UnitsNet;
+using System.IO;
+
+namespace Raspberry.IO.Components.Controllers.HT16K33
+{
+
+    /// <summary>
+	/// Driver for Holtek HT16K33 LED Matrix driver
+	/// As used by Adafruit devices
+    /// </summary>
+	public class HT16K33Connection //: IPwmDevice
+    {
+
+
+    public enum Flash : byte
+    {
+		Off 		= 0x00,
+		On		 	= 0x01,
+		TwoHZ 		= 0x02,
+		OneHZ 		= 0x04,
+		HalfHZ 		= 0x06,
+    }
+
+	public enum Command : byte
+    {
+    	DisplayDataAddress		= 0x00,
+		System_Setup			= 0x20,
+		KeyDataAddressPointer	= 0x40,
+		INTFlagAddressPointer	= 0x60,
+		Flash			 		= 0x80,
+		RowIntSet				= 0xA0,
+		DimmingSet				= 0xE0,
+		TestMode				= 0xD9,
+    }
+
+		const byte DEFAULT_ADDRESS			= 0x70;
+		const byte HT16K33_Oscillator		= 0x01;
+		const byte HT16K33_DisplayOn		= 0x01;
+
+        private readonly I2cDeviceConnection connection;       
+		private static readonly ILog log = LogManager.GetLogger<HT16K33Connection>();
+
+        public byte[] LEDBuffer {get; private set;}  //Max 16 rows, 8 bits (leds)
+
+
+        /// <summary>
+        /// Initializes a new instance of the
+        /// <see cref="Raspberry.IO.Components.Controllers.HT16K33.HT16K33Connection"/> class.
+        /// </summary>
+        /// <param name="connection">I2c connection.</param>
+        /// <param name="RowCount">Rows in use (1 to 16) </param>
+		public HT16K33Connection(I2cDeviceConnection connection, int RowCount)
+        {
+			LEDBuffer = new byte[RowCount];
+            this.connection = connection;
+			
+			log.Info(m => m("Resetting HT16K33"));
+
+			connection.Write((byte)Command.System_Setup | (byte)HT16K33_Oscillator); //Turn on the oscillator.
+			connection.Write((byte)Command.Flash | (byte)HT16K33_DisplayOn | (byte)Flash.Off);
+			connection.Write((byte)Command.DimmingSet | (byte)15);
+
+		//	connection.Write(SetupSequence);
+        }
+
+
+		/// <summary>
+		/// Flash display at specified frequency.
+		/// </summary>
+		/// <param name="">.</param>
+		public void SetFlash(Flash frequency)
+		{
+			connection.WriteByte((byte)((byte)Command.Flash | HT16K33_DisplayOn | (byte)frequency));
+		}
+
+		/// <summary>
+		/// Set brightness of entire display to specified value (0 to 15).
+		/// </summary>
+		/// <param name="">.</param>
+		public void SetBrightness(uint brightness)
+		{
+			if (brightness > 15) brightness = 15;
+					connection.WriteByte((byte)((byte)Command.DimmingSet | (byte)brightness));
+		}
+
+		/// <summary>
+		/// Sets specified LED (0-[row-count] rows, 0 to 7 leds)
+		/// </summary>
+		/// <param name="">.</param>
+		public void SetLed(uint row, uint led, bool OutputOn)
+		{
+			if (row >= LEDBuffer.Length) throw new Exception("Row out of range");
+			if (led > 7) throw new Exception("LED out of range 0 to 7");
+
+			if (OutputOn)
+			{	
+				LEDBuffer[row] |= (byte)(1 << (int)led); //Turn on the speciried LED (set bit to one).			
+			}
+			else
+			{
+				LEDBuffer[row] &= (byte)~(1 << (int)led);  //Turn off the specified LED (set bit to zero).
+			}
+			connection.Write(new byte[] {(byte)row, LEDBuffer[row]});
+		}
+
+			
+		/// <summary>
+		/// Write display buffer to display hardware.
+		/// </summary>
+		/// <param name="">.</param>
+		public void WriteDisplayBuffer()
+		{
+			for (int i = 0; i < LEDBuffer.Length;i++)
+			{
+				connection.Write((byte)i,LEDBuffer[i]);
+			}
+		}
+
+		/// <summary>
+		/// Clear contents of display buffer.
+		/// </summary>
+		/// <param name="">.</param>
+		public void Clear()
+		{
+			for (int i = 0; i < LEDBuffer.Length;i++)
+			{
+				LEDBuffer[i] = 0;
+			}
+			WriteDisplayBuffer();
+		}
+
+		/// <summary>
+		/// Set all LEDs On.
+		/// </summary>
+		/// <param name="">.</param>
+		public void SetAllOn()
+		{
+			for (int i = 0; i < LEDBuffer.Length;i++)
+			{
+				LEDBuffer[i] = 1;
+			}
+			WriteDisplayBuffer();
+		}
+
+    }
+}