The SPIModeEnum Enum

The SPIModeEnum Enum

The SPIModeEnum enum defines possible SPI modes on the Raspberry Pi.

Source Code

The source code for this class is available online for download and also in browseable form.

Syntax

    [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 
        */
    }