80 lines
3.7 KiB
C#
80 lines
3.7 KiB
C#
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namespace Unosquare.RaspberryIO.Native
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{
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using System.Runtime.InteropServices;
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public partial class WiringPi
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{
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#region WiringPi - I2C Library Calls
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/// <summary>
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/// Simple device read. Some devices present data when you read them without having to do any register transactions.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CRead", SetLastError = true)]
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public static extern int WiringPiI2CRead(int fd);
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/// <summary>
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/// These read an 8-bit value from the device register indicated.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <param name="reg">The reg.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CReadReg8", SetLastError = true)]
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public static extern int WiringPiI2CReadReg8(int fd, int reg);
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/// <summary>
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/// These read a 16-bit value from the device register indicated.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <param name="reg">The reg.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CReadReg16", SetLastError = true)]
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public static extern int WiringPiI2CReadReg16(int fd, int reg);
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/// <summary>
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/// Simple device write. Some devices accept data this way without needing to access any internal registers.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <param name="data">The data.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CWrite", SetLastError = true)]
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public static extern int WiringPiI2CWrite(int fd, int data);
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/// <summary>
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/// These write an 8-bit data value into the device register indicated.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <param name="reg">The reg.</param>
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/// <param name="data">The data.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CWriteReg8", SetLastError = true)]
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public static extern int WiringPiI2CWriteReg8(int fd, int reg, int data);
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/// <summary>
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/// These write a 16-bit data value into the device register indicated.
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/// </summary>
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/// <param name="fd">The fd.</param>
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/// <param name="reg">The reg.</param>
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/// <param name="data">The data.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CWriteReg16", SetLastError = true)]
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public static extern int WiringPiI2CWriteReg16(int fd, int reg, int data);
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/// <summary>
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/// This initialises the I2C system with your given device identifier.
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/// The ID is the I2C number of the device and you can use the i2cdetect program to find this out. wiringPiI2CSetup()
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/// will work out which revision Raspberry Pi you have and open the appropriate device in /dev.
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/// The return value is the standard Linux filehandle, or -1 if any error – in which case, you can consult errno as usual.
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/// E.g. the popular MCP23017 GPIO expander is usually device Id 0x20, so this is the number you would pass into wiringPiI2CSetup().
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/// </summary>
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/// <param name="devId">The dev identifier.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "wiringPiI2CSetup", SetLastError = true)]
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public static extern int WiringPiI2CSetup(int devId);
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#endregion
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}
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}
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