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Add partial project documentation to the incomplete PrinterHost demo.

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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
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24
Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.h
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@ -33,27 +33,29 @@
/* Includes: */
#include <avr/io.h>
#include <string.h>
#include <LUFA/Drivers/USB/USB.h>
/* Macros: */
#define PROTOCOL_UNIDIRECTIONAL 0x01
#define PROTOCOL_BIDIRECTIONAL 0x02
#define PROTOCOL_IEEE1284 0x03
/** Printer class-specific request to retrieve the printer's ID string */
#define GET_DEVICE_ID 0
/** Printer class-specific request to retrieve the printer's virtual port status flags */
#define GET_PORT_STATUS 1
/** Printer class-specific request to soft-reset the device */
#define SOFT_RESET 2
/* Type Defines: */
typedef struct
{
uint16_t Length;
uint8_t String[128];
} Device_ID_String_t;
/** Pipe number of the Printer data IN pipe */
#define PRINTER_DATA_IN_PIPE 1
/** Pipe number of the Printer data OUT pipe */
#define PRINTER_DATA_OUT_PIPE 2
/* Function Prototypes: */
uint8_t Printer_GetDeviceID(Device_ID_String_t* DeviceIDString);
uint8_t Printer_SendData(char* PrinterCommands);
uint8_t Printer_GetDeviceID(char* DeviceIDString, uint8_t BufferSize);
uint8_t Printer_GetPortStatus(uint8_t* PortStatus);
uint8_t Printer_SoftReset(void);