]>
Commit | Line | Data |
---|---|---|
1 | #include <stdio.h> | |
2 | #include <stdlib.h> | |
3 | #include <unistd.h> | |
4 | #include <stdint.h> | |
5 | #include <string.h> | |
6 | #include <strings.h> | |
7 | ||
8 | #include "scope.h" | |
9 | #include "usbtmc.h" | |
10 | ||
11 | /* Just USB for now... */ | |
12 | int sendscpi(struct scope* sc, char* cmd, unsigned char *resp, int resplen) | |
13 | { | |
14 | return usbtmc_sendscpi(sc, cmd, resp, resplen); | |
15 | } | |
16 | ||
17 | void closescope(struct scope* sc) | |
18 | { | |
19 | return usbtmc_close(sc); | |
20 | } | |
21 | ||
22 | void claimscope(struct scope* sc) | |
23 | { | |
24 | return usbtmc_claim(sc); | |
25 | } | |
26 | ||
27 | void releasescope(struct scope* sc) | |
28 | { | |
29 | /* Disable keylock, so the user doesn't have to press the 'force'-button */ | |
30 | sendscpi(sc, ":KEY:LOCK DISABLE",NULL,0); | |
31 | return usbtmc_release(sc); | |
32 | } | |
33 | ||
34 | void resetscope(struct scope* sc) | |
35 | { | |
36 | return usbtmc_reset(sc); | |
37 | } | |
38 | ||
39 | struct scope* initscope(void) | |
40 | { | |
41 | struct scope *sc; | |
42 | ||
43 | sc = usbtmc_initscope(); | |
44 | ||
45 | if (!sc) { | |
46 | printf("No scope found.\n"); | |
47 | exit(EXIT_FAILURE); | |
48 | } | |
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 | } | |
63 | ||
64 | #define COPY_SCOPE_STRING(sc, cmd, dst) { \ | |
65 | char *buf; \ | |
66 | buf = scope_get_string(sc, cmd, sizeof(dst)); \ | |
67 | if (buf) { \ | |
68 | strcpy(dst, buf); \ | |
69 | free(buf); \ | |
70 | }\ | |
71 | } | |
72 | ||
73 | char *scope_get_string(struct scope *sc, char *cmd, int maxlen) | |
74 | { | |
75 | unsigned char *buf; | |
76 | int res; | |
77 | ||
78 | buf = malloc(maxlen+1); | |
79 | if (buf == NULL) { | |
80 | perror("malloc(scope_get_strings)"); | |
81 | exit(EXIT_FAILURE); | |
82 | } | |
83 | ||
84 | res = sendscpi(sc, cmd, buf, maxlen); | |
85 | if (res < 0) { | |
86 | fprintf(stderr, "Command %s failed with %d\n", cmd, res); | |
87 | free(buf); | |
88 | return NULL; | |
89 | } | |
90 | ||
91 | buf[res] = 0; | |
92 | ||
93 | return (char*)buf; | |
94 | } | |
95 | ||
96 | int scope_get_truth_value(struct scope *sc, char *cmd) | |
97 | { | |
98 | char buf[128]; | |
99 | int res; | |
100 | ||
101 | bzero(buf, sizeof(buf)); | |
102 | res = sendscpi(sc, cmd, (unsigned char*)buf, sizeof(buf)-1); | |
103 | if (res < 0) { | |
104 | fprintf(stderr, "Command %s failed with %d\n", cmd, res); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | printf("%s %s\n", cmd, buf); | |
109 | ||
110 | if (strcasecmp(buf, "on") == 0) { | |
111 | return 1; | |
112 | } else if (strcasecmp(buf, "enable") == 0) { | |
113 | return 1; | |
114 | } | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | int scope_get_int(struct scope *sc, char *cmd) | |
120 | { | |
121 | char buf[128]; | |
122 | int res; | |
123 | ||
124 | bzero(buf, sizeof(buf)); | |
125 | res = sendscpi(sc, cmd, (unsigned char*)buf, sizeof(buf)-1); | |
126 | if (res < 0) { | |
127 | fprintf(stderr, "Command %s failed with %d\n", cmd, res); | |
128 | return 0; | |
129 | } | |
130 | ||
131 | return atoi(buf); | |
132 | } | |
133 | ||
134 | double scope_get_double(struct scope *sc, char*cmd) | |
135 | { | |
136 | char buf[128]; | |
137 | int res; | |
138 | double ret; | |
139 | ||
140 | bzero(buf, sizeof(buf)); | |
141 | res = sendscpi(sc, cmd, (unsigned char*)buf, sizeof(buf)-1); | |
142 | if (res < 0) { | |
143 | fprintf(stderr, "Command %s failed with %d\n", cmd, res); | |
144 | return 0.0; | |
145 | } | |
146 | ||
147 | ret = strtod(buf, NULL); | |
148 | ||
149 | return ret; | |
150 | } | |
151 | ||
152 | int update_scope_status(struct scope *sc) | |
153 | { | |
154 | bzero(&(sc->status), sizeof(sc->status)); | |
155 | ||
156 | COPY_SCOPE_STRING(sc, ":INFO:LANG?", sc->status.system.lang); | |
157 | ||
158 | sc->status.system.counter_enabled = scope_get_truth_value(sc, ":COUN:ENAB?"); | |
159 | sc->status.system.beep_enabled = scope_get_truth_value(sc, ":BEEP:ENAB?"); | |
160 | ||
161 | sc->status.keyboard.key_lock = scope_get_truth_value(sc, ":KEY:LOCK?"); | |
162 | ||
163 | COPY_SCOPE_STRING(sc, ":ACQ:TYPE?", sc->status.acquire.type); | |
164 | COPY_SCOPE_STRING(sc, ":ACQ:MODE?", sc->status.acquire.mode); | |
165 | ||
166 | sc->status.acquire.averages = scope_get_int(sc, ":ACQ:AVER?"); | |
167 | sc->status.acquire.srate_chan1 = scope_get_double(sc, ":ACQ:SAMP? CHAN1"); | |
168 | sc->status.acquire.srate_chan2 = scope_get_double(sc, ":ACQ:SAMP? CHAN2"); | |
169 | sc->status.acquire.srate_digital = scope_get_double(sc, ":ACQ:SAMP? DIGITAL"); | |
170 | ||
171 | COPY_SCOPE_STRING(sc, ":TIM:MODE?", sc->status.timebase.mode); | |
172 | sc->status.timebase.offset = scope_get_double(sc, ":TIM:OFFS?"); | |
173 | sc->status.timebase.delayed_offset = scope_get_double(sc, ":TIM:DEL:OFFS?"); | |
174 | sc->status.timebase.scale = scope_get_double(sc, ":TIM:SCAL?"); | |
175 | COPY_SCOPE_STRING(sc, ":TIM:FORM?", sc->status.timebase.format); | |
176 | ||
177 | return 0; | |
178 | } |