File: SPIModeEnum
Details
File: SPIModeEnum.cs
Date: Sun, Mar 3, 2019
using System;
/// +------------------------------------------------------------------------------------------------------------------------------+
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/// +------------------------------------------------------------------------------------------------------------------------------+
namespace RPICSIO
{
/// +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
/// <summary>
/// An enum to define the SPI modes on the Raspberry Pi 2. See
/// http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus
/// </summary>
/// <history>
/// 01 Dec 16 Cynic - Originally written
/// </history>
[Flags]
public enum SPIModeEnum : uint
{
SPI_CPHA = 0x01, // clock phase
SPI_CPOL = 0x02, // clock polarity
SPI_MODE_0 = (0|0), // (original MicroWire)
SPI_MODE_1 = (0|SPI_CPHA),
SPI_MODE_2 = (SPI_CPOL|0),
SPI_MODE_3 = (SPI_CPOL|SPI_CPHA),
/* Not tested. May or may not work on the RPI
SPI_CS_HIGH = 0x04, // chipselect active high?
SPI_LSB_FIRST = 0x08, // per-word bits-on-wire
SPI_3WIRE = 0x10, // SI/SO signals shared
SPI_LOOP = 0x20, // loopback mode
SPI_NO_CS = 0x40, // 1 dev/bus, no chipselect
SPI_READY = 0x80, // slave pulls low to pause
SPI_TX_DUAL = 0x100, // transmit with 2 wires
SPI_TX_QUAD = 0x200, // transmit with 4 wires
SPI_RX_DUAL = 0x400, // receive with 2 wires
SPI_RX_QUAD = 0x800, // receive with 4 wires
*/
}
}