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 #include <stdint.h>
   6
   7 #include "usbtmc.h"
   8 #include "scope.h"
   9
  10 /* Just USB for now... */
  11 int sendscpi(struct scope* sc, char* cmd, unsigned char *resp, int resplen)
  12 {
  13         return usbtmc_sendscpi(sc->usbdev, cmd, resp, resplen);
  14 }
  15
  16 void closescope(struct scope* sc)
  17 {
  18         return usbtmc_close(sc->usbdev);
  19 }
  20
  21 void claimscope(struct scope* sc)
  22 {
  23         return usbtmc_claim(sc->usbdev);
  24 }
  25
  26 void releasescope(struct scope* sc)
  27 {
  28         //Disable keylock, so the user doesn't have to press the 'force'-button
  29         sendscpi(sc, ":KEY:LOCK DISABLE",NULL,0);
  30         return usbtmc_release(sc->usbdev);
  31 }
  32
  33 struct scope* initscope(void)
  34 {
  35         struct usb_dev_handle *usbdev;
  36         struct scope *sc;
  37
  38         usbdev = usbtmc_initscope();
  39
  40         if (!usbdev) {
  41                 printf("No scope found.\n");
  42                 exit(EXIT_FAILURE);
  43         }
  44
  45         sc = calloc(1, sizeof(struct scope));
  46         if (sc == NULL) {
  47                 perror("malloc");
  48                 exit(EXIT_FAILURE);
  49         }
  50
  51         sc->usbdev = usbdev;
  52
  53         claimscope(sc);
  54         sendscpi(sc, "*IDN?", (unsigned char*)sc->idn, sizeof(sc->idn));
  55         releasescope(sc);
  56
  57         printf("Scope found (%s)\n", sc->idn);
  58
  59         return sc;
  60 }
  61
  62 char *scope_idn(struct scope *sc)
  63 {
  64         return sc->idn;
  65 }