// Read a single character from the input queue
static int
serial_getchar ()
{
while (1)
{
DISABLE_INTERRUPTS
if (!queue_is_empty (&g_rx_queue))
break;
ENABLE_INTERRUPTS
delay_loop_ms (1);
}
int val = queue_read (&g_rx_queue);
ENABLE_INTERRUPTS
return val;
}
/********************************************************************
* INITIALIZATION
* ******************************************************************/
void ENC2_Init(void) {
debug_entry;
//Set default bank
currentBank = 0;
init_SPI2();
DeassertChipSelect_2();
ENCX24J600_Reset();
delay_loop_ms (100);
ENCX24J600_Unreset ();
// Perform a reliable reset
ENC2_SendSystemReset();
// Initialize RX tracking variables and other control state flags
nextPacketPointer = RXSTART;
// Set up TX/RX/UDA buffer addresses
ENC2_WriteReg(ETXST, TXSTART);
ENC2_WriteReg(ERXST, RXSTART);
ENC2_WriteReg(ERXTAIL, RAMSIZE - 2);
ENC2_WriteReg(EUDAST, USSTART);
ENC2_WriteReg(EUDAND, USEND);
// If promiscuous mode is set, than allow accept all packets
#ifdef PROMISCUOUS_MODE
ENC2_WriteReg(ERXFCON, (ERXFCON_CRCEN | ERXFCON_RUNTEN | ERXFCON_UCEN | ERXFCON_NOTMEEN | ERXFCON_MCEN));
dd
#endif
// Set PHY Auto-negotiation to support 10BaseT Half duplex,
// 10BaseT Full duplex, 100BaseTX Half Duplex, 100BaseTX Full Duplex,
// and symmetric PAUSE capability
ENC2_WritePHYReg(PHANA, PHANA_ADPAUS0 | PHANA_AD10FD | PHANA_AD10 | PHANA_AD100FD | PHANA_AD100 | PHANA_ADIEEE0);
// Enable RX packet reception
ENC2_BFSReg(ECON1, ECON1_RXEN);
// KUKU, supaya GPIO aktif untuk deteck packet
ENC2_WriteReg(EIE, EIE_INTIE | EIE_LINKIE | EIE_PKTIE | EIE_TXABTIE | EIE_RXABTIE);
debug_leave;
}
// Write a single character to the output queue
static void
serial_putchar (char c)
{
while (1)
{
DISABLE_INTERRUPTS
if (!queue_is_full (&g_tx_queue))
break;
ENABLE_INTERRUPTS
delay_loop_ms (1);
}
// Send straight away if we may
if (queue_is_empty (&g_tx_queue) && !U1STAbits.UTXBF)
U1TXREG = c;
else
queue_write (&g_tx_queue, c);
ENABLE_INTERRUPTS
}
