internals/src/Tizen.Peripheral/Interop/Spi.cs

   1 /*
   2 * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the License);
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an AS IS BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17 using System;
  18 using System.Runtime.InteropServices;
  19 using Tizen.Internals.Errors;
  20 internal static partial class Interop
  21 {
  22     internal static partial class Peripheral
  23     {
  24         internal static partial class Spi
  25         {
  26             public enum Mode
  27             {
  28                 Mode0 = 0,
  29                 Mode1,
  30                 Mode2,
  31                 Mode3
  32             }
  33
  34             public enum BitOrder
  35             {
  36                 Msb = 0,
  37                 Lsb
  38             }
  39
  40             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_open")]
  41             internal static extern ErrorCode Open(int bus, int chipSelectNumber, out IntPtr handle);
  42
  43             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_close")]
  44             internal static extern ErrorCode Close(IntPtr handle);
  45
  46             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_set_mode")]
  47             internal static extern ErrorCode SetMode(IntPtr handle, Mode mode);
  48
  49             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_set_bit_order")]
  50             internal static extern ErrorCode SetBitOrder(IntPtr handle, BitOrder order);
  51
  52             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_set_bits_per_word")]
  53             internal static extern ErrorCode SetBitsPerWord(IntPtr handle, byte bits);
  54
  55             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_set_frequency")]
  56             internal static extern ErrorCode SetFrequency(IntPtr handle, uint frequency);
  57
  58             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_read")]
  59             internal static extern ErrorCode Read(IntPtr handle, byte[] data, uint size);
  60
  61             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_write")]
  62             internal static extern ErrorCode Write(IntPtr handle, byte[] data, uint size);
  63
  64             [DllImport(Libraries.Peripherial, EntryPoint = "peripheral_spi_transfer", CallingConvention = CallingConvention.Cdecl)]
  65             internal static extern ErrorCode Transfer(IntPtr handle, byte[] txdata, byte[] rxdata, uint size);
  66         }
  67     }
  68 }