Moved PrinterHost demo from Incomplete to LowLevel, as it is now near-complete.
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Dean Camera
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140
Demos/Host/LowLevel/PrinterHost/Lib/PrinterCommands.c
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Demos/Host/LowLevel/PrinterHost/Lib/PrinterCommands.c
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#include "PrinterCommands.h"
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/** Sends the given data directly to the printer via the data endpoints, for the sending of print commands in printer
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* languages accepted by the attached printer (e.g. PCL).
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*
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* \param[in] PrinterCommands Pointer to a structure containing the commands and length of the data to send
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*
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* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
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*/
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uint8_t Printer_SendData(Printer_Data_t* PrinterCommands)
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{
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uint8_t ErrorCode;
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Pipe_SelectPipe(PRINTER_DATA_OUT_PIPE);
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Pipe_Unfreeze();
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if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands->Data, PrinterCommands->Length)) != PIPE_RWSTREAM_NoError)
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return ErrorCode;
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Pipe_ClearOUT();
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while (!(Pipe_IsOUTReady()));
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Pipe_Freeze();
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return PIPE_RWSTREAM_NoError;
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}
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/** Issues a Printer class Get Device ID command to the attached device, to retrieve the device ID string (which indicates
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* the accepted printer languages, the printer's model and other pertinent information).
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*
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* \param[out] DeviceIDString Pointer to the destination where the returned string should be stored
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* \param[in] BufferSize Size in bytes of the allocated buffer for the returned Device ID string
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*
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* \return A value from the USB_Host_SendControlErrorCodes_t enum
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*/
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uint8_t Printer_GetDeviceID(char* DeviceIDString, uint16_t BufferSize)
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{
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uint8_t ErrorCode = HOST_SENDCONTROL_Successful;
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uint16_t DeviceIDStringLength;
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USB_ControlRequest = (USB_Request_Header_t)
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{
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bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
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bRequest: GET_DEVICE_ID,
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wValue: 0,
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wIndex: 0,
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wLength: sizeof(DeviceIDStringLength),
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};
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if ((ErrorCode = USB_Host_SendControlRequest(&DeviceIDStringLength)) != HOST_SENDCONTROL_Successful)
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return ErrorCode;
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DeviceIDStringLength = SwapEndian_16(DeviceIDStringLength);
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if (DeviceIDStringLength > BufferSize)
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DeviceIDStringLength = BufferSize;
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USB_ControlRequest.wLength = DeviceIDStringLength;
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if ((ErrorCode = USB_Host_SendControlRequest(DeviceIDString)) != HOST_SENDCONTROL_Successful)
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return ErrorCode;
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/* Move string back two characters to remove the string length value from the start of the array */
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memmove(&DeviceIDString[0], &DeviceIDString[2], DeviceIDStringLength - 2);
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DeviceIDString[DeviceIDStringLength - 2] = 0x00;
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return HOST_SENDCONTROL_Successful;
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}
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/** Issues a Printer class Get Port Status command to the attached device, to retrieve the current status flags of the
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* printer.
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*
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* \param[out] PortStatus Pointer to the destination where the printer's status flag values should be stored
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*
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* \return A value from the USB_Host_SendControlErrorCodes_t enum
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*/
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uint8_t Printer_GetPortStatus(uint8_t* PortStatus)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
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bRequest: GET_PORT_STATUS,
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wValue: 0,
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wIndex: 0,
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wLength: sizeof(uint8_t),
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};
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return USB_Host_SendControlRequest(PortStatus);
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}
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/** Issues a Printer class Soft Reset command to the attached device, to reset the printer ready for new input without
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* physically cycling the printer's power.
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*
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* \return A value from the USB_Host_SendControlErrorCodes_t enum
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*/
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uint8_t Printer_SoftReset(void)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
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bRequest: SOFT_RESET,
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wValue: 0,
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wIndex: 0,
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wLength: 0,
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};
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return USB_Host_SendControlRequest(NULL);
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}
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69
Demos/Host/LowLevel/PrinterHost/Lib/PrinterCommands.h
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69
Demos/Host/LowLevel/PrinterHost/Lib/PrinterCommands.h
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@ -0,0 +1,69 @@
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
|
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
|
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#ifndef _PRINTER_COMMANDS_H_
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#define _PRINTER_COMMANDS_H_
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/* Includes: */
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#include <avr/io.h>
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#include <string.h>
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#include <LUFA/Drivers/USB/USB.h>
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/* Macros: */
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/** Printer class-specific request to retrieve the printer's ID string */
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#define GET_DEVICE_ID 0
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/** Printer class-specific request to retrieve the printer's virtual port status flags */
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#define GET_PORT_STATUS 1
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/** Printer class-specific request to soft-reset the device */
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#define SOFT_RESET 2
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/** Pipe number of the Printer data IN pipe */
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#define PRINTER_DATA_IN_PIPE 1
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/** Pipe number of the Printer data OUT pipe */
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#define PRINTER_DATA_OUT_PIPE 2
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/* Type Defines: */
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typedef struct
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{
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char* Data;
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uint16_t Length;
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} Printer_Data_t;
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/* Function Prototypes: */
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uint8_t Printer_SendData(Printer_Data_t* PrinterCommands);
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uint8_t Printer_GetDeviceID(char* DeviceIDString, uint16_t BufferSize);
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uint8_t Printer_GetPortStatus(uint8_t* PortStatus);
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uint8_t Printer_SoftReset(void);
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#endif
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