Prosoft-technology MVI69-ADMNET Uživatelský manuál stáhnout pdf (Strana 72)

Application Development Function Library - ADMNET API MVI-ADMNET ♦ 'C' Programmable

Developer's Guide 'C' Programmable Application Development Module with Ethernet

Page 72 of 122 ProSoft Technology, Inc.

February 20, 2013

5.5 ADMNET API Receive Socket Functions

This section describes the ADMNET API Receive Socket functions.

ADM_receive_socket

Syntax

int ADM_receive_socket(char *skName, char *holdRecPtr, int *readLen, int

protocol);

Parameters

skName

Name of the socket that has been initialized and used to receive data.

holdRecPtr

Pointer to a buffer to hold data that will be received by the API.

readLen

Length of data received by the API.

protocol

Specified protocol to receive over Ethernet (USE_TCP or USE_UDP).

Description

To simplify a program, this function opens connection and receives message.

Return Value

SK_SUCCESS

Socket is successfully sent.

SK_NOT_FOUND

Socket could not be found.

SK_PROCESS_SOCKET

Socket is in the process of sending.

Example

char hold[5000];

int readLen;

int se, i;

se = ADM _receive_socket("receiveSK", holdingReg, &readLen, USE_UDP);

if(se == SK_SUCCESS)

{

printf("Length == %d\n", readLen);

for (i=0; i<readLen; i++)

{

printf("%02X ", *(holdingReg+i));

if(i%10 == 0) printf("\n");

}

printf("\n");

}

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Prosoft-technology MVI69-ADMNET Uživatelský manuál Strana 72