void
Enc28J60Network::writeOp(uint8_t op, uint8_t address, uint8_t data)
{
CSACTIVE;
// issue write command
SPI.transfer(op | (address & ADDR_MASK));
SPI.transfer(data);
CSPASSIVE;
}
void Enc28J60Network::writeByte(uint16_t addr, uint8_t data)
{
writeRegPair(EWRPTL, addr);
CSACTIVE;
SPI.transfer(ENC28J60_WRITE_BUF_MEM);
SPI.transfer(data);
CSPASSIVE;
}
uint8_t Enc28J60Network::readByte(uint16_t addr)
{
writeRegPair(ERDPTL, addr);
CSACTIVE;
SPI.transfer(ENC28J60_READ_BUF_MEM);
uint8_t data = SPI.transfer(0x00);
CSPASSIVE;
return data;
}
void
Enc28J60Network::writeBuffer(uint16_t len, uint8_t* data)
{
CSACTIVE;
// issue write command
SPI.transfer(ENC28J60_WRITE_BUF_MEM);
while (len--) {
SPI.transfer(*data++);
}
CSPASSIVE;
}
void
Enc28J60Network::readBuffer(uint16_t len, uint8_t* data)
{
CSACTIVE;
// issue read command
SPI.transfer(ENC28J60_READ_BUF_MEM);
while (len--) {
*data++ = SPI.transfer(0x00);
}
CSPASSIVE;
}
uint8_t
Enc28J60Network::readOp(uint8_t op, uint8_t address)
{
CSACTIVE;
// issue read command
SPI.transfer(op | (address & ADDR_MASK));
byte result = SPI.transfer(0x00);
if (address & 0x80)
result = SPI.transfer(0x00);
CSPASSIVE;
return result;
}
/** Receive a byte from the card */
static uint8_t spiRec(void)
{
#ifndef USE_SPI_LIB
spiSend(0XFF);
return SPDR;
#else
return SPI_for_SD.transfer(0xFF);
#endif
}
/** Send a byte to the card */
static void spiSend(uint8_t b)
{
#ifndef USE_SPI_LIB
SPDR = b;
while (!(SPSR & (1 << SPIF)));
#else
SPI_for_SD.transfer(b);
#endif
}
