Hi,
I'm getting two errors on my C++ code that I got as an example from the net.The other error is the initializing argument 3 of 'void SendList(int, Addr4882_t*, void*, long int, int)'..I was wondering if anyone could explain to me what it meant and how to rectify the errors.
I have also uploaded pictures to see clearer.. Did I even post the message in the correct forum?? or should this question be posted on a C++ forum? Please, I need serious help..
The code is posted below:
#include <windows.h>
#include "Decl-32.h"
#include <iostream>
#include <string>
using namespace std;
void gpib_error(int errnum, char *errmsg); //error-reporting function
const int BUF_SIZE = 1024; //the size of our input/output buffer
const int NUM_DEVICES = 31; //maximum number of devices on the bus
int main() {
char buffer[BUF_SIZE];
int i, num_listeners; //the number of listeners on the bus
unsigned short address; //the address of a listener
/* Arrays of possible instrument addresses, and actual addresses
The type Addr4882_t is a computer-dependent map to a built-in
data type that holds the number that is the address of a device. */
Addr4882_t instruments[NUM_DEVICES], result[NUM_DEVICES];
SendIFC(0);
//check for an error
if(ibsta & ERR)
gpib_error(1, "Could not send IFC");
for(i = 0; i < NUM_DEVICES - 1; i++)
instruments[i] = i + 1;
instruments[NUM_DEVICES - 1] = NOADDR;
cout << "Finding all listeners on the bus..." << endl;
FindLstn(0, instruments, result, NUM_DEVICES);
if(ibsta & ERR)
gpib_error(2, "Could not find listeners");
num_listeners = ibcnt;
result[num_listeners] = NOADDR;
cout << "Found " << num_listeners << " devices on the bus" << endl;
SendList(0, result, "*IDN?", 5L, NLend);
//check for error
if (ibsta & ERR)
gpib_error(3, "Could not send *IDN? to devices");
for(i = 0; i < num_listeners; i++) {
Receive(0, result[i], buffer, BUF_SIZE, STOPend);
//check for error
if(ibsta & ERR)
gpib_error(4, "Could not receive from device");
address = GetPAD(result[i]);
buffer[ibcnt] = '\0';
//Now output the results
cout << "Device #" << address << " has ID string: " << buffer;
}
//We're done with the program, so take the board off-line
ibonl (0,0);
}
void gpib_error(int errnum, char *errmsg) {
cout << "Error #" << errnum << ": " << errmsg << endl;
ibonl(0,0); //take the board offline
exit(1); //terminate program
}