Mikroelektronika MIKROE-738 Datenbogen

mikroC PRO for PIC32

MikroElektronika

447

SPI_Ethernet_doPacket

SPI_Ethernet_putByte

unsigned int SPI_Ethernet_doPacket();

Description This is MAC module routine. It processes next received packet if such exists. Packets are processed 

in the following manner:

- ARP & ICMP requests are replied automatically. 

- upon TCP request the SPI_Ethernet_UserTCP function is called for further processing. 

- upon UDP request the SPI_Ethernet_UserUDP function is called for further processing. 

Parameters None.
Returns

- 

0

  -  upon  successful  packet  processing  (zero  packets  received  or  received  packet  processed 

successfully). 

- 

1

 - upon reception error or receive buffer corruption. 

ENC28J60

 controller needs to be restarted. 

- 

2

 - received packet was not sent to us (not our IP, nor IP broadcast address). 

- 

3

 - received IP packet was not IPv4. 

- 

4

 - received packet was of type unknown to the library. 

Ethernet module has to be initialized. See SPI_Ethernet_Init.

if (SPI_Ethernet_doPacket() == 0)(1) {  // process received packets

  ...

}

SPI_Ethernet_doPacket

 must be called as often as possible in user’s code.

void SPI_Ethernet_putByte(unsigned char v);

Description This is MAC module routine. It stores one byte to address pointed by the current 

ENC28J60

 write 

pointer (

EWRPT

).

Parameters - 

v

: value to store 

Nothing.

Ethernet module has to be initialized. See SPI_Ethernet_Init.

char data_;

...

SPI_Ethernet_putByte(data); // put a byte into ENC28J60 buffer

None.