Maxim-integrated 78Q8430 ST 5100/OS-20 with NexGen TCP/IP Stack Manual do Utilizador descarregar pdf (Página 18)

78Q8430 Driver Manual for ST5100/OS-20 with NexGen TCP/IP Stack UM_8430_005

18 Rev. 1.0

4.8 STETHER_Receive()

Prototype:

void STETHER_Receive(NGifnet *netp)

Description:

This routine checks for valid RX frames and copies their data from the 78Q8430 buffers into the

system buffers.

Parameters:

netp network interface type NGethifnet_tsc

Returns:

none

tsccpy

tscReadReg_BUS16

tscWriteReg_BUS16

STETHER_Receive

Figure 10: STETHER_Receive Call Graph

4.9 STETHER_Send ()

Prototype:

ST_ErrorCode_t STETHER_Send(NGifnet *netp, NGbuf *bufp)

Description:

This function sends new message buffer data to the device. It copies data from system memory to

the 78Q8430 data buffers and then triggers a 78Q8430 transmit event.

Parameters:

netp network interface type NGethifnet_tsc

Returns:

ST_NO_ERROR if no errors are encountered.

ST_ERROR_NO_MEMORY if no TX FDs are available from the driver core.

tsccpy

tscReadReg_BUS16

tscWriteReg_BUS16

STETHER_Send

Figure 11: STETHER_Send Call Graph

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Maxim-integrated 78Q8430 ST 5100/OS-20 with NexGen TCP/IP Stack Manual do Utilizador Página 18