/// <summary> /// Sends a MMC/SD command /// </summary> /// <returns>The result of the command.</returns> /// <param name="fd">File handle</param> /// <param name="command">MMC/SD opcode</param> /// <param name="buffer">Buffer for MMC/SD command response</param> /// <param name="timeout">Timeout in seconds</param> /// <param name="duration">Time it took to execute the command in milliseconds</param> /// <param name="sense"><c>True</c> if MMC/SD returned non-OK status</param> /// <param name="write"><c>True</c> if data is sent from host to card</param> /// <param name="isApplication"><c>True</c> if command should be preceded with CMD55</param> /// <param name="flags">Flags indicating kind and place of response</param> /// <param name="blocks">How many blocks to transfer</param> /// <param name="argument">Command argument</param> /// <param name="response">Response registers</param> /// <param name="blockSize">Size of block in bytes</param> internal static int SendMmcCommand(int fd, MmcCommands command, bool write, bool isApplication, MmcFlags flags, uint argument, uint blockSize, uint blocks, ref byte[] buffer, out uint[] response, out double duration, out bool sense, uint timeout = 0) { response = null; duration = 0; sense = false; if (buffer == null) { return(-1); } MmcIocCmd ioCmd = new MmcIocCmd(); IntPtr bufPtr = Marshal.AllocHGlobal(buffer.Length); ioCmd.write_flag = write; ioCmd.is_ascmd = isApplication; ioCmd.opcode = (uint)command; ioCmd.arg = argument; ioCmd.flags = flags; ioCmd.blksz = blockSize; ioCmd.blocks = blocks; if (timeout > 0) { ioCmd.data_timeout_ns = timeout * 1000000000; ioCmd.cmd_timeout_ms = timeout * 1000; } ioCmd.data_ptr = (ulong)bufPtr; Marshal.Copy(buffer, 0, bufPtr, buffer.Length); DateTime start = DateTime.UtcNow; int error = Extern.ioctlMmc(fd, LinuxIoctl.MmcIocCmd, ref ioCmd); DateTime end = DateTime.UtcNow; sense |= error < 0; if (error < 0) { error = Marshal.GetLastWin32Error(); } Marshal.Copy(bufPtr, buffer, 0, buffer.Length); response = ioCmd.response; duration = (end - start).TotalMilliseconds; Marshal.FreeHGlobal(bufPtr); return(error); }
internal static extern int ioctlMmc(int fd, LinuxIoctl request, ref MmcIocCmd value);