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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2017 Frank Stettner <frank-stettner@gmx.net> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include "scpi.h" | |
22 | #include "protocol.h" | |
23 | ||
24 | static const uint32_t scanopts[] = { | |
25 | SR_CONF_CONN, | |
26 | }; | |
27 | ||
28 | static const uint32_t drvopts[] = { | |
29 | SR_CONF_MULTIMETER, | |
30 | }; | |
31 | ||
32 | static const uint32_t devopts[] = { | |
33 | SR_CONF_CONTINUOUS, | |
34 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
35 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
36 | SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
37 | SR_CONF_RANGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
38 | }; | |
39 | ||
40 | static const struct { | |
41 | enum sr_mq mq; | |
42 | enum sr_mqflag mqflag; | |
43 | } mqopts[] = { | |
44 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC}, | |
45 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC}, | |
46 | {SR_MQ_CURRENT, SR_MQFLAG_DC}, | |
47 | {SR_MQ_CURRENT, SR_MQFLAG_AC}, | |
48 | {SR_MQ_RESISTANCE, 0}, | |
49 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE}, | |
50 | }; | |
51 | ||
52 | ||
53 | static const struct { | |
54 | enum sr_mq mq; | |
55 | enum sr_mqflag mqflag; | |
56 | int range_exp; | |
57 | const char *range_str; | |
58 | } rangeopts[] = { | |
59 | /* -99 is a dummy exponent for auto ranging. */ | |
60 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -99, "Auto"}, | |
61 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -2, "30mV"}, | |
62 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, -1, "300mV"}, | |
63 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 0, "3V"}, | |
64 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 1, "30V"}, | |
65 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC, 2, "300V"}, | |
66 | /* -99 is a dummy exponent for auto ranging. */ | |
67 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC, -99, "Auto"}, | |
68 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC, -1, "300mV"}, | |
69 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 0, "3V"}, | |
70 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 1, "30V"}, | |
71 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC, 2, "300V"}, | |
72 | /* -99 is a dummy exponent for auto ranging. */ | |
73 | {SR_MQ_CURRENT, SR_MQFLAG_DC, -99, "Auto"}, | |
74 | {SR_MQ_CURRENT, SR_MQFLAG_DC, -1, "300mV"}, | |
75 | {SR_MQ_CURRENT, SR_MQFLAG_DC, 0, "3V"}, | |
76 | /* -99 is a dummy exponent for auto ranging. */ | |
77 | {SR_MQ_CURRENT, SR_MQFLAG_AC, -99, "Auto"}, | |
78 | {SR_MQ_CURRENT, SR_MQFLAG_AC, -1, "300mV"}, | |
79 | {SR_MQ_CURRENT, SR_MQFLAG_AC, 0, "3V"}, | |
80 | /* -99 is a dummy exponent for auto ranging. */ | |
81 | {SR_MQ_RESISTANCE, 0, -99, "Auto"}, | |
82 | {SR_MQ_RESISTANCE, 0, 1, "30"}, | |
83 | {SR_MQ_RESISTANCE, 0, 2, "300"}, | |
84 | {SR_MQ_RESISTANCE, 0, 3, "3k"}, | |
85 | {SR_MQ_RESISTANCE, 0, 4, "30k"}, | |
86 | {SR_MQ_RESISTANCE, 0, 5, "300k"}, | |
87 | {SR_MQ_RESISTANCE, 0, 6, "3M"}, | |
88 | {SR_MQ_RESISTANCE, 0, 7, "30M"}, | |
89 | /* -99 is a dummy exponent for auto ranging. */ | |
90 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, -99, "Auto"}, | |
91 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 1, "30R"}, | |
92 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 2, "300R"}, | |
93 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 3, "3kR"}, | |
94 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 4, "30kR"}, | |
95 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 5, "300kR"}, | |
96 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 6, "3MR"}, | |
97 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, 7, "30MR"}, | |
98 | }; | |
99 | ||
100 | static struct sr_dev_driver hp_3478a_driver_info; | |
101 | ||
102 | static int create_front_channel(struct sr_dev_inst *sdi, int chan_idx) | |
103 | { | |
104 | struct sr_channel *channel; | |
105 | struct channel_context *chanc; | |
106 | ||
107 | chanc = g_malloc(sizeof(*chanc)); | |
108 | chanc->location = TERMINAL_FRONT; | |
109 | ||
110 | channel = sr_channel_new(sdi, chan_idx++, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
111 | channel->priv = chanc; | |
112 | ||
113 | return chan_idx; | |
114 | } | |
115 | ||
116 | static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi) | |
117 | { | |
118 | int ret; | |
119 | struct sr_dev_inst *sdi; | |
120 | struct dev_context *devc; | |
121 | ||
122 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
123 | sdi->vendor = g_strdup("Hewlett-Packard"); | |
124 | sdi->model = g_strdup("3478A"); | |
125 | sdi->conn = scpi; | |
126 | sdi->driver = &hp_3478a_driver_info; | |
127 | sdi->inst_type = SR_INST_SCPI; | |
128 | ||
129 | devc = g_malloc0(sizeof(struct dev_context)); | |
130 | sr_sw_limits_init(&devc->limits); | |
131 | sdi->priv = devc; | |
132 | ||
133 | /* Get actual status (function, digits, ...). */ | |
134 | ret = hp_3478a_get_status_bytes(sdi); | |
135 | if (ret != SR_OK) | |
136 | return NULL; | |
137 | ||
138 | create_front_channel(sdi, 0); | |
139 | ||
140 | return sdi; | |
141 | } | |
142 | ||
143 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
144 | { | |
145 | return sr_scpi_scan(di->context, options, probe_device); | |
146 | } | |
147 | ||
148 | static int dev_open(struct sr_dev_inst *sdi) | |
149 | { | |
150 | return sr_scpi_open(sdi->conn); | |
151 | } | |
152 | ||
153 | static int dev_close(struct sr_dev_inst *sdi) | |
154 | { | |
155 | return sr_scpi_close(sdi->conn); | |
156 | } | |
157 | ||
158 | static int config_get(uint32_t key, GVariant **data, | |
159 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
160 | { | |
161 | struct dev_context *devc; | |
162 | int ret; | |
163 | GVariant *arr[2]; | |
164 | unsigned int i; | |
165 | const char *range_str; | |
166 | ||
167 | (void)cg; | |
168 | ||
169 | devc = sdi->priv; | |
170 | ||
171 | switch (key) { | |
172 | case SR_CONF_LIMIT_SAMPLES: | |
173 | case SR_CONF_LIMIT_MSEC: | |
174 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
175 | case SR_CONF_MEASURED_QUANTITY: | |
176 | ret = hp_3478a_get_status_bytes(sdi); | |
177 | if (ret != SR_OK) | |
178 | return ret; | |
179 | arr[0] = g_variant_new_uint32(devc->measurement_mq); | |
180 | arr[1] = g_variant_new_uint64(devc->measurement_mq_flags); | |
181 | *data = g_variant_new_tuple(arr, 2); | |
182 | break; | |
183 | case SR_CONF_RANGE: | |
184 | ret = hp_3478a_get_status_bytes(sdi); | |
185 | if (ret != SR_OK) | |
186 | return ret; | |
187 | range_str = "Auto"; | |
188 | for (i = 0; i < ARRAY_SIZE(rangeopts); i++) { | |
189 | if (rangeopts[i].mq == devc->measurement_mq && | |
190 | rangeopts[i].mqflag == devc->measurement_mq_flags && | |
191 | rangeopts[i].range_exp == devc->range_exp) { | |
192 | range_str = rangeopts[i].range_str; | |
193 | break; | |
194 | } | |
195 | } | |
196 | *data = g_variant_new_string(range_str); | |
197 | break; | |
198 | default: | |
199 | return SR_ERR_NA; | |
200 | } | |
201 | ||
202 | return SR_OK; | |
203 | } | |
204 | ||
205 | static int config_set(uint32_t key, GVariant *data, | |
206 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
207 | { | |
208 | struct dev_context *devc; | |
209 | enum sr_mq mq; | |
210 | enum sr_mqflag mq_flags; | |
211 | GVariant *tuple_child; | |
212 | unsigned int i; | |
213 | const char *range_str; | |
214 | ||
215 | (void)cg; | |
216 | ||
217 | devc = sdi->priv; | |
218 | ||
219 | switch (key) { | |
220 | case SR_CONF_LIMIT_SAMPLES: | |
221 | case SR_CONF_LIMIT_MSEC: | |
222 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
223 | case SR_CONF_MEASURED_QUANTITY: | |
224 | tuple_child = g_variant_get_child_value(data, 0); | |
225 | mq = g_variant_get_uint32(tuple_child); | |
226 | tuple_child = g_variant_get_child_value(data, 1); | |
227 | mq_flags = g_variant_get_uint64(tuple_child); | |
228 | g_variant_unref(tuple_child); | |
229 | return hp_3478a_set_mq(sdi, mq, mq_flags); | |
230 | case SR_CONF_RANGE: | |
231 | range_str = g_variant_get_string(data, NULL); | |
232 | for (i = 0; i < ARRAY_SIZE(rangeopts); i++) { | |
233 | if (rangeopts[i].mq == devc->measurement_mq && | |
234 | rangeopts[i].mqflag == devc->measurement_mq_flags && | |
235 | g_strcmp0(rangeopts[i].range_str, range_str) == 0) { | |
236 | return hp_3478a_set_range(sdi, rangeopts[i].range_exp); | |
237 | } | |
238 | } | |
239 | return SR_ERR_NA; | |
240 | default: | |
241 | return SR_ERR_NA; | |
242 | } | |
243 | ||
244 | return SR_OK; | |
245 | } | |
246 | ||
247 | static int config_list(uint32_t key, GVariant **data, | |
248 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
249 | { | |
250 | struct dev_context *devc; | |
251 | int ret; | |
252 | unsigned int i; | |
253 | GVariant *gvar, *arr[2]; | |
254 | GVariantBuilder gvb; | |
255 | ||
256 | devc = sdi->priv; | |
257 | ||
258 | switch (key) { | |
259 | case SR_CONF_SCAN_OPTIONS: | |
260 | case SR_CONF_DEVICE_OPTIONS: | |
261 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
262 | case SR_CONF_MEASURED_QUANTITY: | |
263 | /* | |
264 | * TODO: move to std.c as | |
265 | * SR_PRIV GVariant *std_gvar_measured_quantities() | |
266 | */ | |
267 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
268 | for (i = 0; i < ARRAY_SIZE(mqopts); i++) { | |
269 | arr[0] = g_variant_new_uint32(mqopts[i].mq); | |
270 | arr[1] = g_variant_new_uint64(mqopts[i].mqflag); | |
271 | gvar = g_variant_new_tuple(arr, 2); | |
272 | g_variant_builder_add_value(&gvb, gvar); | |
273 | } | |
274 | *data = g_variant_builder_end(&gvb); | |
275 | break; | |
276 | case SR_CONF_RANGE: | |
277 | ret = hp_3478a_get_status_bytes(sdi); | |
278 | if (ret != SR_OK) | |
279 | return ret; | |
280 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
281 | for (i = 0; i < ARRAY_SIZE(rangeopts); i++) { | |
282 | if (rangeopts[i].mq == devc->measurement_mq && | |
283 | rangeopts[i].mqflag == devc->measurement_mq_flags) { | |
284 | g_variant_builder_add(&gvb, "s", rangeopts[i].range_str); | |
285 | } | |
286 | } | |
287 | *data = g_variant_builder_end(&gvb); | |
288 | break; | |
289 | default: | |
290 | return SR_ERR_NA; | |
291 | } | |
292 | ||
293 | return SR_OK; | |
294 | } | |
295 | ||
296 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
297 | { | |
298 | struct sr_scpi_dev_inst *scpi; | |
299 | struct dev_context *devc; | |
300 | ||
301 | scpi = sdi->conn; | |
302 | devc = sdi->priv; | |
303 | ||
304 | sr_sw_limits_acquisition_start(&devc->limits); | |
305 | std_session_send_df_header(sdi); | |
306 | ||
307 | /* | |
308 | * NOTE: For faster readings, there are some things one can do: | |
309 | * - Turn off the display: sr_scpi_send(scpi, "D3SIGROK"). | |
310 | * - Set the line frequency to 60Hz via switch (back of the unit). | |
311 | * - Set to 3.5 digits measurement (add config key SR_CONF_DIGITS). | |
312 | */ | |
313 | ||
314 | /* Set to internal trigger. */ | |
315 | sr_scpi_send(scpi, "T1"); | |
316 | /* Get device status. */ | |
317 | hp_3478a_get_status_bytes(sdi); | |
318 | ||
319 | return sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100, | |
320 | hp_3478a_receive_data, (void *)sdi); | |
321 | } | |
322 | ||
323 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
324 | { | |
325 | struct sr_scpi_dev_inst *scpi; | |
326 | ||
327 | scpi = sdi->conn; | |
328 | ||
329 | sr_scpi_source_remove(sdi->session, scpi); | |
330 | std_session_send_df_end(sdi); | |
331 | ||
332 | /* Set to internal trigger. */ | |
333 | sr_scpi_send(scpi, "T1"); | |
334 | /* Turn on display. */ | |
335 | sr_scpi_send(scpi, "D1"); | |
336 | ||
337 | return SR_OK; | |
338 | } | |
339 | ||
340 | static struct sr_dev_driver hp_3478a_driver_info = { | |
341 | .name = "hp-3478a", | |
342 | .longname = "HP 3478A", | |
343 | .api_version = 1, | |
344 | .init = std_init, | |
345 | .cleanup = std_cleanup, | |
346 | .scan = scan, | |
347 | .dev_list = std_dev_list, | |
348 | .dev_clear = std_dev_clear, | |
349 | .config_get = config_get, | |
350 | .config_set = config_set, | |
351 | .config_list = config_list, | |
352 | .dev_open = dev_open, | |
353 | .dev_close = dev_close, | |
354 | .dev_acquisition_start = dev_acquisition_start, | |
355 | .dev_acquisition_stop = dev_acquisition_stop, | |
356 | .context = NULL, | |
357 | }; | |
358 | SR_REGISTER_DEV_DRIVER(hp_3478a_driver_info); |