Need an example to acquire an Agilent E5071B waveform
Hi all
As a new user, I need one or several examples to get on the right track to acquire a waveform (or read an analyzied result) of Agilent E5071B. I installed the driver-"agena".
See you soon
I managed to read data of 5071B with the rountine of 'find the bandwidth', and also found the sample application included in the pilot of the aircraft has not completed and would not read the data without tracking setting.
Thanks Den.
Tags: NI Hardware
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/*******************************************************
Simplification of Windows HIDAlan Ott
Software signal 1122/08/2009
Copyright 2009, all rights reserved.
The contents of this file can be used by anyone
for any other reason without conditions and can be
used as a starting point for your own applications
that appeal to HIDAPI.
********************************************************/#include
#include
#include
#include
#include "hidapi.h".The headers needed to sleep.
#ifdef _WIN32
#include
#else
#include
#endifint main (int argc, char * argv)
{
int RES;
unsigned char buf [256];
#define MAX_STR 255
WSTR wchar_t [MAX_STR];
hid_device * handle;
int i;WIN32 #ifdef
UNREFERENCED_PARAMETER (ARGC);
UNREFERENCED_PARAMETER (argv);
#endifstruct hid_device_info * devs, * cur_dev;
devs = hid_enumerate (0x0, 0x0);
printf ("id=%d\tsproduct id = %d\n",devs-> vendor_id provider, devs-> product_id ");
cur_dev = devs;
so that {(cur_dev)
printf ("detecte\n device type: % 04hx %04hx\n path: %s\n Serial_number: %ls", cur_dev-> vendor_id, cur_dev-> cur_dev-> path, product_id, cur_dev-> Serial_number);
printf ("\n");
printf ("manufacturer: %ls\n", cur_dev-> manufacturer_string ");
printf ("product: %ls\n", cur_dev-> product_string ");
printf ("output: %hx\n", cur_dev-> release_number ");
printf ("Interface: %d\n", cur_dev-> interface_number);
printf ("\n");
cur_dev = cur_dev-> next;
}
hid_free_enumeration (devs);To implement the command buffer.
Memset (buf, 0x00, sizeof (BUF));
buf [0] = 0x01;
buf [1] = 0x81;Open the unit by using the VID, PID,
and possibly the serial number.
handle = hid_open (0x4d8, 0x3f, L "12345");
handle = hid_open (0 x 0461, 0x4d81, NULL);
If (! handle) {}
printf ("cannot open device\n");
Return 1;
}Read the manufacturer string
WSTR [0] = 0x0000;
RES = hid_get_manufacturer_string (handle, wstr, MAX_STR);
If (res<>
printf ("could not read the manufacturer string\n");
printf ("string of the manufacturer: %ls\n", wstr ");Read the product chain
WSTR [0] = 0x0000;
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If (res<>
printf ("cannot read string\n product");
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WSTR [0] = 0x0000;
RES = hid_get_serial_number_string (handle, wstr, MAX_STR);
If (res<>
printf ("could not read the serial number string\n");
printf ("string of serial number: (%d) %ls', wstr [0], wstr");
printf ("\n");Read the indexed string 1
WSTR [0] = 0x0000;
RES = hid_get_indexed_string (handle, 1, wstr, MAX_STR);
If (res<>
printf ("could not read the string indexed 1\n");
printf ("indexed 1 string: %ls\n", wstr);Define the function hid_read() as non-blocking.
hid_set_nonblocking (handle, 1);
Try reading from the device. It is and must be without
given here, but enforcement should not block.
RES = hid_read (handle, buf, 17);Send a report on the device
buf [0] = 0x2;
buf [1] = 0xa0;
buf [2] = 0x0a;
buf [3] = 0x00;
buf [4] = 0x00;
RES = hid_send_feature_report (handle, buf, 17);
If (res< 0)="">
printf ("cannot send a feature report. \n") ;
}Memset (buf, 0, sizeof (BUF));
Read a report of the device
buf [0] = 0x2;
RES = hid_get_feature_report (handle, buf, sizeof (buf));
If (res< 0)="">
printf ("failed to get a feature report. \n") ;
printf ("%ls", hid_error (handle));
}
else {}
Print the buffer returned.
printf ("function Report\n");
for (i = 0; i< res;="">
printf ("% 02hhx", buf [i]);
printf ("\n");
}Memset (buf, 0, sizeof (BUF));
LED toggle (cmd 0x80). The first byte is the report number (0 x 1).
buf [0] = 0x1;
buf [1] = 0x80;
RES = hid_write (handle, buf, 17);
If (res< 0)="">
printf ("could not write () \n");
printf ("error: %ls\n", hid_error (handle));
}Status request (cmd 0x81). The first byte is the report number (0 x 1).
buf [0] = 0x1;
buf [1] = 0x81;
hid_write (handle, buf, 17);
If (res<>
printf ("impossible to write() (2) \n" ");Read the requested State. hid_read() has been set to be
non-blocking by the call to hid_set_nonblocking() above.
This loop shows the non-blocking of hid_read() nature.
Res = 0;
While (res == 0) {}
RES = hid_read (handle, buf, sizeof (buf));
If (res == 0)
printf("waiting...\n");
If (res<>
printf ("could not read () \n");
WIN32 #ifdef
Sleep (500);
#else
usleep(500*1000);
#endif
}printf ("read data: \n");
Print the buffer returned.
for (i = 0; i< res;="">
printf ("% 02hhx", buf [i]);
printf ("\n");hid_close (handle);
/ * Free of static objects of HIDAPI. */
hid_exit();WIN32 #ifdef
System ("pause");
#endifreturn 0;
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