spi_flash.h

#ifndef SPI_FLASH_H
#define	SPI_FLASH_H

#include <xc.h>

#include "usb.h"

#define IO_DIRECTION_OUT		0
#define IO_DIRECTION_IN			1

typedef enum _SPARTAN_3A_CONFIG_IO_PIN{
	SPARTAN_3A_CONFIG_IO_PIN_SI,
	SPARTAN_3A_CONFIG_IO_PIN_SO,
	SPARTAN_3A_CONFIG_IO_PIN_CS,
	SPARTAN_3A_CONFIG_IO_PIN_CLK,
	SPARTAN_3A_CONFIG_IO_PIN_PROGB,
	SPARTAN_3A_CONFIG_IO_PIN_DONE,
	SPARTAN_3A_CONFIG_IO_PIN_INITB
}SPARTAN_3A_CONFIG_IO_PIN, *PTR_SPARTAN_3A_CONFIG_IO_PIN;

typedef enum _SPARTAN_3A_CONFIG_OUT_PACKET_TYPE{
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_OPEN,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_CLOSE,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GETSTRING,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUTSTRING,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GETSTRING_ATADDRESS,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUTSTRING_ATADDRESS,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_CHAR,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUT_CHAR,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_SET_IO_DIR,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_SET_IO_VALUE,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_IO_VALUE,
	SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_ALL_IO_VALUES
}SPARTAN_3A_CONFIG_OUT_PACKET_TYPE, *PTR_SPARTAN_3A_CONFIG_OUT_PACKET_TYPE;

typedef enum _SPARTAN_3A_CONFIG_IN_PACKET_TYPE{
	SPARTAN_3A_CONFIG_IN_PACKET_STATUS,
	SPARTAN_3A_CONFIG_IN_PACKET_BUFFER
}SPARTAN_3A_CONFIG_IN_PACKET_TYPE, *PTR_SPARTAN_3A_CONFIG_IN_PACKET_TYPE;

typedef enum _SPARTAN_3A_CONFIG_STATUS{
	STATUS_SUCCESS,
	STATUS_FAILURE,
	STATUS_FAIL_PACKET_SIZE_TOO_LARGE,
	STATUS_FAIL_UNEXPECTED_PACKET,
	STATUS_FAIL_INCORRECT_PARAMETER,
	STATUS_FAIL_DEVICE_NOT_READY,
	STATUS_FAIL_READ_ERROR,
	STATUS_FAIL_WRITE_ERROR,
	STATUS_FAIL_UNSUPPORTED_OFFSET,
	STATUS_FAIL_DATA_PACKET_EXPECTED
}SPARTAN_3A_CONFIG_STATUS, *PTR_SPARTAN_3A_CONFIG_STATUS;

typedef union _SPARTAN_3A_CONFIG_OUT_PACKET{
	unsigned char RawData[CDC_DATA_OUT_EP_SIZE];

	struct{
		unsigned char Byte0; //~
		unsigned char Byte1; //Packet Type
		unsigned char Byte2;
		unsigned char Byte3;
		unsigned char Byte4;
		unsigned char Byte5;
		unsigned char Data[64];
	}RawPacket;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_OPEN
		unsigned char SpiNum;
		unsigned char SyncMode;
		unsigned char BusMode;
		unsigned char SmpPhase;
	}SpiOpen;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_CLOSE
		unsigned char SpiNum;
	}SPIClose;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GETSTRING
		unsigned char SpiNum;
		unsigned char Length;
	}SPIGetString;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUTSTRING
		unsigned char SpiNum;
		unsigned char Length;
		unsigned char reserved0;
		unsigned char reserved1;
		unsigned char Data[64];
	}SPIPutString;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GETSTRING_ATADDRESS
		unsigned char SpiNum;
		unsigned char Length;
		unsigned char address[3];
	}SPIGetStringAtAddress;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUTSTRING_ATADDRESS
		unsigned char SpiNum;
		unsigned char address[3];
		unsigned char Data[64];
	}SPIPutStringAtAddress;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_CHAR
		unsigned char SpiNum;
	}SPIGetChar;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_PUT_CHAR
		unsigned char SpiNum;
		unsigned char Data;
	}SPIPutChar;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_SET_IO_DIR
		unsigned char SpiNum;
		unsigned char Io;
		unsigned char Direction;
	}SetIODir;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_SET_IO_VALUE
		unsigned char SpiNum;
		unsigned char Io;
		unsigned char Value;
	}SetIOValue;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_IO_VALUE
		unsigned char SpiNum;
		unsigned char Io;
	}GetIOValue;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_OUT_PACKET_SPI_GET_ALL_IO_VALUES
		unsigned char SpiNum;
	}GetAllIOValues;

}SPARTAN_3A_CONFIG_OUT_PACKET, *PTR_SPARTAN_3A_CONFIG_OUT_PACKET;

typedef union _SPARTAN_3A_CONFIG_IN_PACKET{
	unsigned char RawData[38];

	struct{
		unsigned char Byte0; //~
		unsigned char Byte1; //Packet Type
		unsigned char Byte2;
		unsigned char Byte3;
		unsigned char Byte4;
		unsigned char Byte5;
		unsigned char Data[32];
	}RawPacket;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_IN_PACKET_STATUS
		unsigned char SpiNum;
		unsigned char Status;
		unsigned char ExecutedCmd;
	}Status;

	struct{
		unsigned char Tilda; //This has to be ~
		unsigned char PacketType; //SPARTAN_3A_CONFIG_IN_PACKET_BUFFER
		unsigned char SpiNum;
		unsigned char reserved0;
		unsigned char reserved1;
		unsigned char reserved2;
		unsigned char Data[32];
	}SPIBuffer;

}SPARTAN_3A_CONFIG_IN_PACKET, *PTR_SPARTAN_3A_CONFIG_IN_PACKET;

void SpiFlashInit(void);

void SpiFlashTask(void);

#endif