git.zerfleddert.de Git - rigol/blob - scope.c

   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... */
  10 int sendscpi(struct scope* sc, char* cmd, unsigned char *resp, int resplen)
  11 {
  12         return usbtmc_sendscpi(sc->usbdev, cmd, resp, resplen);
  13 }
  14
  15 void closescope(struct scope* sc)
  16 {
  17         return usbtmc_close(sc->usbdev);
  18 }
  19
  20 void claimscope(struct scope* sc)
  21 {
  22         return usbtmc_claim(sc->usbdev);
  23 }
  24
  25 void 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
  32 struct 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
  59 char *scope_idn(struct scope *sc)
  60 {
  61         return sc->idn;
  62 }