Datasheet

Spi_Ethernet_doPacket
386
MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD
Libraries
mikroPASCAL PRO for AVR
CHAPTER 6
Requires Ethernet module has to be initialized. See Spi_Ethernet_Init.
Example
Spi_Ethernet_Disable(Spi_Ethernet_CRC or Spi_Ethernet_UNICAST);
// disable CRC checking and Unicast traffic
Prototype
function Spi_Ethernet_doPacket(): byte;
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.
Description
This is MAC module routine. It processes next received packet if such exists. Pack-
ets 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.
Note: Spi_Ethernet_doPacket must be called as often as possible in user's code.
Requires Ethernet module has to be initialized. See Spi_Ethernet_Init.
Example
while TRUE do
begin
Spi_Ethernet_doPacket(); // process received packets
end