Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

481

SPI_Ethernet_doPacket

SPI_Ethernet_putByte

sub function SPI_Ethernet_doPacket() as byte

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.

while TRUE

  ...

  SPI_Ethernet_doPacket() ‘ process received packets

  ...  

SPI_Ethernet_doPacket

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

sub procedure SPI_Ethernet_putByte(dim v as byte)

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.

dim data as byte

...

SPI_Ethernet_putByte(data) ‘ put an byte into ENC28J60 buffer

None.