ahoneybun/qmk_firmware
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add partial project documentation to the incomplete PrinterHost demo.

Browse source 
Change over Printer_GetDeviceID() to require a pointer to the destination buffer plus the buffer size, rather than using a pointer to a special structure.

Make new Printer_SendData() function to hide the implementation of sending data to an attached printer, cleaning up the main demo source file body.
This commit is contained in:
Dean Camera 2009-07-19 12:36:19 +00:00
parent d3fb6273aa
commit 786479faf0
7 changed files with 110 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

35
Demos/Host/Incomplete/PrinterHost/ConfigDescriptor.h
View file

@ -35,35 +35,48 @@
#include <LUFA/Drivers/USB/USB.h>
#include "PrinterHost.h"
#include "Lib/PrinterCommands.h"
/* Macros: */
/** Interface Class value for the Printer Device class */
#define PRINTER_CLASS 0x07
/** Interface Subclass value for the Printer Device class */
#define PRINTER_SUBCLASS 0x01
/** Interface Protocol value for a Bidirectional communication encapsulation */
#define PRINTER_PROTOCOL 0x02
#define PRINTER_DATA_OUT_PIPE 1
#define PRINTER_DATA_IN_PIPE 2
/** Maximum size of a device configuration descriptor which can be processed by the host, in bytes */
#define MAX_CONFIG_DESCRIPTOR_SIZE 512
/* Enums: */
/** Enum for the possible return codes of the ProcessConfigurationDescriptor() function. */
enum PrinterHost_GetConfigDescriptorDataCodes_t
{
SuccessfulConfigRead = 0,
ControlError = 1,
DescriptorTooLarge = 2,
InvalidConfigDataReturned = 3,
NoInterfaceFound = 4,
NoEndpointFound = 5,
SuccessfulConfigRead = 0, /**< Configuration Descriptor was processed successfully */
ControlError = 1, /**< A control request to the device failed to complete successfully */
DescriptorTooLarge = 2, /**< The device's Configuration Descriptor is too large to process */
InvalidConfigDataReturned = 3, /**< The device returned an invalid Configuration Descriptor */
NoInterfaceFound = 4, /**< A compatible printer interface was not found in the device's Configuration Descriptor */
NoEndpointFound = 5, /**< The printer data endpoints were not found in the device's Configuration Descriptor */
};
/* External Variables: */
/** Interface index of the Bidirectional Printer interface within the device, once the Configuration
* Descriptor has been processed.
*/
uint8_t PrinterInterfaceNumber;
/** Interface Alternate Setting index of the Bidirectional Printer interface within the device, once
* the Configuration Descriptor has been processed.
*/
uint8_t PrinterAltSetting;
/* Function Prototypes: */
uint8_t ProcessConfigurationDescriptor(void);
uint8_t NextBidirectionalPrinterInterface(void* CurrentDescriptor);
uint8_t NextInterfaceBulkDataEndpoint(void* CurrentDescriptor);
uint8_t DComp_NextBidirectionalPrinterInterface(void* CurrentDescriptor);
uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor);
#endif