src/main/scala/devices/spi/SPIConsts.scala

   1 // See LICENSE for license details.
   2 package sifive.blocks.devices.spi
   3
   4 import Chisel._
   5
   6 object SPIProtocol {
   7   val width = 2
   8   val Single = UInt(0, width)
   9   val Dual   = UInt(1, width)
  10   val Quad   = UInt(2, width)
  11
  12   val cases = Seq(Single, Dual, Quad)
  13   def decode(x: UInt): Seq[Bool] = cases.map(_ === x)
  14 }
  15
  16 object SPIDirection {
  17   val width = 1
  18   val Rx = UInt(0, width)
  19   val Tx = UInt(1, width)
  20 }
  21
  22 object SPIEndian {
  23   val width = 1
  24   val MSB = UInt(0, width)
  25   val LSB = UInt(1, width)
  26 }
  27
  28 object SPICSMode {
  29   val width = 2
  30   val Auto = UInt(0, width)
  31   val Hold = UInt(2, width)
  32   val Off  = UInt(3, width)
  33 }