add abstraction for scope-access
[rigol] / scope.c
CommitLineData
713be7a4
MG
1#include <usb.h>
2#include <stdio.h>
3#include <stdlib.h>
4#include <unistd.h>
5
6#include "usbtmc.h"
7#include "scope.h"
8
9/* Just USB for now... */
10int sendscpi(struct scope* sc, char* cmd, unsigned char *resp, int resplen)
11{
12 return usbtmc_sendscpi(sc->usbdev, cmd, resp, resplen);
13}
14
15void closescope(struct scope* sc)
16{
17 return usbtmc_close(sc->usbdev);
18}
19
20void claimscope(struct scope* sc)
21{
22 return usbtmc_claim(sc->usbdev);
23}
24
25void releasescope(struct scope* sc)
26{
27 //Disable keylock, so the user doesn't have to press the 'force'-button
28 sendscpi(sc, ":KEY:LOCK DISABLE",NULL,0);
29 return usbtmc_release(sc->usbdev);
30}
31
32struct scope* initscope(void)
33{
34 struct usb_dev_handle *usbdev;
35 struct scope *sc;
36
37 usbdev = usbtmc_initscope();
38
39 if (!usbdev)
40 return NULL;
41
42 sc = calloc(1, sizeof(struct scope));
43 if (sc == NULL) {
44 perror("malloc");
45 exit(EXIT_FAILURE);
46 }
47
48 sc->usbdev = usbdev;
49
50 claimscope(sc);
51 sendscpi(sc, "*IDN?", (unsigned char*)sc->idn, sizeof(sc->idn));
52 releasescope(sc);
53
54 printf("Scope found (%s)\n", sc->idn);
55
56 return sc;
57}
58
59char *scope_idn(struct scope *sc)
60{
61 return sc->idn;
62}
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