#include "main.h"

// Operations Defines
#define ENC28_READ_CTRL_REG				0x00
#define ENC28_WRITE_CTRL_REG			0x40 //0x02
#define ENC28_BIT_FIELD_CLR				0xA0 //0x05
#define ENC28_BIT_FIELD_SET				0x80 //0x04
#define ENC28_SOFT_RESET				0xFF //0x07

#define ENC28_READ_BUF_MEM				0x3A //0x01
#define ENC28_WRITE_BUF_MEM				0x7A //0x03

// Masks and some constants
#define ADDR_MASK						0x1F
#define BANK_MASK						0x60  //0110 0000
#define RXSTART_INIT					0x0000
#define RXSTOP_INIT						0x0BFF
#define TXSTART_INIT					0x0C00
#define TXSTOP_INIT						0x11FF
#define MAX_FRAMELEN					1500
#define MISTAT_BUSY						0x01

// Bank0 - control registers addresses
#define ERDPT							0x00
#define EWRPT							0x02
#define ETXST							0x04
#define ETXND							0x06
#define ERXST							0x08
#define ERXND							0x0A
#define ERXRDPT							0x0C
#define ERXWRPT							0x0E

// Bank1 - control registers addresses
#define ERXFCON							0x18|0x20
#define EPMM0							0x08|0x20
#define EPMCS							0x10|0x20
#define EPKTCNT							0x19|0x20

// Bank2 - control registers addresses
#define MACON1							0x00|0x40
#define MACON2							0x01|0x40
#define MACON3							0x02|0x40
#define MAIPG							0x06|0x40|0x80
#define MABBIPG							0x04|0x40|0x80
#define MAMXFL							0x0A|0x40|0x80
#define MIREGADR						0x14|0x40|0x80
#define MIWR					    	0x16|0x40|0x80
#define MICMD					    	0x12|0x40|0x80
#define MIRD					    	0x18|0x40|0x80

// Bank3 - control registers addresses
#define MAADR1							0x04|0x60|0x80
#define MAADR2							0x05|0x60|0x80
#define MAADR3							0x02|0x60|0x80
#define MAADR4							0x03|0x60|0x80
#define MAADR5							0x00|0x60|0x80
#define MAADR6							0x01|0x60|0x80
#define MISTAT							0x0A|0x60|0x80
#define EREVID							0x12|0x60

// Common registers
#define EIE								0x1B
#define EIR								0x1C
#define ESTAT							0x1D
#define ECON1							0x1F
#define ECON2							0x1E

// BitField Defines
#define ECON1_BSEL0						0x01
#define ECON1_BSEL1						0x02
#define ESTAT_CLKRDY 					0x01
#define ECON2_PKTDEC					0x40
#define ECON2_AUTOINC					0x80
#define ECON1_RXEN						0x04
#define ECON1_TXRST						0x80
#define ECON1_TXRTS						0x08
#define ERXFCON_UCEN					0x80
#define ERXFCON_CRCEN					0x20
#define ERXFCON_PMEN					0x10
#define ERXFCON_BCEN					0x01
#define ERXFCON_ANDOR					0x40
#define MACON1_MARXEN					0x01
#define MACON1_TXPAUS					0x08
#define MACON1_RXPAUS					0x04
#define MACON1_PASSALL					0x02
#define MACON3_PADCFG0					0x20
#define MACON3_TXCRCEN					0x10
#define MACON3_FRMLNEN					0x02
#define EIE_INTIE						0x80
#define EIE_PKTIE						0x40
#define EIR_TXERIF						0x02
#define EIR_PKTIF 						0x40
#define EIR_TXIF						0x08
#define MICMD_MIIRD						0x01

//my MAC address  0x74,0x69,0x69,0x2D,0x30,0x36
#define MAC_1							0x36
#define MAC_2							0x30
#define MAC_3							0x2D
#define MAC_4							0x69
#define MAC_5							0x69
#define MAC_6							0x74

// PHY layer
#define PHCON2_HDLDIS					0x0100
#define PHLCON_LED						0x0122

#define PHCON2							0x10
#define PHSTAT2							0x11
#define PHLCON							0x14

//Functions prototypes
uint8_t ENC28_readOp(uint8_t oper, uint8_t addr);
void ENC28_writeOp(uint8_t oper, uint8_t addr, uint8_t data);

uint8_t ENC28_readReg8( uint8_t addr);
void ENC28_writeReg8(uint8_t addr, uint8_t data);

uint16_t ENC28_readReg16( uint8_t addr);
void ENC28_writeReg16(uint8_t addrL, uint16_t data);

void ENC28_setBank(uint8_t addr);

void ENC28_Init(void);

void ENC28_writePhy(uint8_t addr, uint16_t data);
uint16_t ENC28_readPhy(uint8_t addr);

void ENC28_packetSend(uint16_t len, uint8_t* dataBuf);
void ENC28_writeBuf(uint16_t len, uint8_t* data);