Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #include "PrinterCommands.h"
  32
  33 uint8_t Printer_SendData(char* PrinterCommands)
  34 {
  35         uint8_t ErrorCode;
  36
  37         Pipe_SelectPipe(PRINTER_DATA_OUT_PIPE);
  38         Pipe_Unfreeze();
  39
  40         if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands, strlen(PrinterCommands))) != PIPE_RWSTREAM_NoError)
  41           return ErrorCode;
  42
  43         Pipe_ClearOUT();
  44         while (!(Pipe_IsOUTReady()));
  45
  46         Pipe_Freeze();
  47
  48         return PIPE_RWSTREAM_NoError;
  49 }
  50
  51 /** Issues a Printer class Get Device ID command to the attached device, to retrieve the device ID string (which indicates
  52  *  the accepted printer languages, the printer's model and other pertinent information).
  53  *
  54  *  \param[out] DeviceIDString Pointer to the destination where the returned string should be stored
  55  *  \param[in] BufferSize  Size in bytes of the allocated buffer for the returned Device ID string
  56  *
  57  *  \return A value from the USB_Host_SendControlErrorCodes_t enum
  58  */
  59 uint8_t Printer_GetDeviceID(char* DeviceIDString, uint8_t BufferSize)
  60 {
  61         uint8_t  ErrorCode = HOST_SENDCONTROL_Successful;
  62         uint16_t DeviceIDStringLength;
  63
  64         USB_ControlRequest = (USB_Request_Header_t)
  65                 {
  66                         bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
  67                         bRequest:      GET_DEVICE_ID,
  68                         wValue:        0,
  69                         wIndex:        0,
  70                         wLength:       sizeof(DeviceIDStringLength),
  71                 };
  72
  73         if ((ErrorCode = USB_Host_SendControlRequest(&DeviceIDStringLength)) != HOST_SENDCONTROL_Successful)
  74           return ErrorCode;
  75
  76         DeviceIDStringLength = SwapEndian_16(DeviceIDStringLength);
  77
  78         if (DeviceIDStringLength > BufferSize)
  79           DeviceIDStringLength = BufferSize;
  80
  81         USB_ControlRequest.wLength = (DeviceIDStringLength - 1);
  82
  83         if ((ErrorCode = USB_Host_SendControlRequest(DeviceIDString)) != HOST_SENDCONTROL_Successful)
  84           return ErrorCode;
  85
  86         DeviceIDString[DeviceIDStringLength] = 0x00;
  87
  88         return HOST_SENDCONTROL_Successful;
  89 }
  90
  91 /** Issues a Printer class Get Port Status command to the attached device, to retrieve the current status flags of the
  92  *  printer.
  93  *
  94  *  \param[out] PortStatus  Pointer to the destination where the printer's status flag values should be stored
  95  *
  96  *  \return A value from the USB_Host_SendControlErrorCodes_t enum
  97  */
  98 uint8_t Printer_GetPortStatus(uint8_t* PortStatus)
  99 {
 100         USB_ControlRequest = (USB_Request_Header_t)
 101                 {
 102                         bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
 103                         bRequest:      GET_PORT_STATUS,
 104                         wValue:        0,
 105                         wIndex:        0,
 106                         wLength:       sizeof(uint8_t),
 107                 };
 108
 109         return USB_Host_SendControlRequest(PortStatus);
 110 }
 111
 112 /** Issues a Printer class Soft Reset command to the attached device, to reset the printer ready for new input without
 113  *  physically cycling the printer's power.
 114  *
 115  *  \return A value from the USB_Host_SendControlErrorCodes_t enum
 116  */
 117 uint8_t Printer_SoftReset(void)
 118 {
 119         USB_ControlRequest = (USB_Request_Header_t)
 120                 {
 121                         bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
 122                         bRequest:      SOFT_RESET,
 123                         wValue:        0,
 124                         wIndex:        0,
 125                         wLength:       0,
 126                 };
 127
 128         return USB_Host_SendControlRequest(NULL);
 129 }
 130