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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 | }; | |
38 | ||
39 | static const struct { | |
40 | enum sr_mq mq; | |
41 | enum sr_mqflag mqflag; | |
42 | } mqopts[] = { | |
43 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC}, | |
44 | {SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_AUTORANGE}, | |
45 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC | SR_MQFLAG_RMS}, | |
46 | {SR_MQ_VOLTAGE, SR_MQFLAG_AC | SR_MQFLAG_RMS | SR_MQFLAG_AUTORANGE}, | |
47 | {SR_MQ_CURRENT, SR_MQFLAG_DC}, | |
48 | {SR_MQ_CURRENT, SR_MQFLAG_DC | SR_MQFLAG_AUTORANGE}, | |
49 | {SR_MQ_CURRENT, SR_MQFLAG_AC | SR_MQFLAG_RMS}, | |
50 | {SR_MQ_CURRENT, SR_MQFLAG_AC | SR_MQFLAG_RMS | SR_MQFLAG_AUTORANGE}, | |
51 | {SR_MQ_RESISTANCE, 0}, | |
52 | {SR_MQ_RESISTANCE, 0 | SR_MQFLAG_AUTORANGE}, | |
53 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE}, | |
54 | {SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE | SR_MQFLAG_AUTORANGE}, | |
55 | }; | |
56 | ||
57 | SR_PRIV struct sr_dev_driver hp_3478a_driver_info; | |
58 | ||
59 | static int create_front_channel(struct sr_dev_inst *sdi, int chan_idx) | |
60 | { | |
61 | struct sr_channel *channel; | |
62 | struct channel_context *chanc; | |
63 | ||
64 | chanc = g_malloc(sizeof(*chanc)); | |
65 | chanc->location = TERMINAL_FRONT; | |
66 | ||
67 | channel = sr_channel_new(sdi, chan_idx++, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
68 | channel->priv = chanc; | |
69 | ||
70 | return chan_idx; | |
71 | } | |
72 | ||
73 | static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi) | |
74 | { | |
75 | int ret; | |
76 | struct sr_dev_inst *sdi; | |
77 | struct dev_context *devc; | |
78 | ||
79 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
80 | sdi->vendor = g_strdup("Hewlett-Packard"); | |
81 | sdi->model = g_strdup("3478A"); | |
82 | sdi->conn = scpi; | |
83 | sdi->driver = &hp_3478a_driver_info; | |
84 | sdi->inst_type = SR_INST_SCPI; | |
85 | ||
86 | devc = g_malloc0(sizeof(struct dev_context)); | |
87 | sr_sw_limits_init(&devc->limits); | |
88 | sdi->priv = devc; | |
89 | ||
90 | /* Get actual status (function, digits, ...). */ | |
91 | ret = hp_3478a_get_status_bytes(sdi); | |
92 | if (ret != SR_OK) | |
93 | return NULL; | |
94 | ||
95 | create_front_channel(sdi, 0); | |
96 | ||
97 | return sdi; | |
98 | } | |
99 | ||
100 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
101 | { | |
102 | return sr_scpi_scan(di->context, options, probe_device); | |
103 | } | |
104 | ||
105 | static int dev_open(struct sr_dev_inst *sdi) | |
106 | { | |
107 | return sr_scpi_open(sdi->conn); | |
108 | } | |
109 | ||
110 | static int dev_close(struct sr_dev_inst *sdi) | |
111 | { | |
112 | return sr_scpi_close(sdi->conn); | |
113 | } | |
114 | ||
115 | static int config_get(uint32_t key, GVariant **data, | |
116 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
117 | { | |
118 | struct dev_context *devc; | |
119 | int ret; | |
120 | GVariant *arr[2]; | |
121 | ||
122 | (void)cg; | |
123 | ||
124 | devc = sdi->priv; | |
125 | ||
126 | switch (key) { | |
127 | case SR_CONF_LIMIT_SAMPLES: | |
128 | case SR_CONF_LIMIT_MSEC: | |
129 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
130 | case SR_CONF_MEASURED_QUANTITY: | |
131 | ret = hp_3478a_get_status_bytes(sdi); | |
132 | if (ret != SR_OK) | |
133 | return ret; | |
134 | arr[0] = g_variant_new_uint32(devc->measurement_mq); | |
135 | arr[1] = g_variant_new_uint64(devc->measurement_mq_flags); | |
136 | *data = g_variant_new_tuple(arr, 2); | |
137 | break; | |
138 | default: | |
139 | return SR_ERR_NA; | |
140 | } | |
141 | ||
142 | return SR_OK; | |
143 | } | |
144 | ||
145 | static int config_set(uint32_t key, GVariant *data, | |
146 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
147 | { | |
148 | struct dev_context *devc; | |
149 | enum sr_mq mq; | |
150 | enum sr_mqflag mq_flags; | |
151 | GVariant *tuple_child; | |
152 | ||
153 | (void)cg; | |
154 | ||
155 | devc = sdi->priv; | |
156 | ||
157 | switch (key) { | |
158 | case SR_CONF_LIMIT_SAMPLES: | |
159 | case SR_CONF_LIMIT_MSEC: | |
160 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
161 | case SR_CONF_MEASURED_QUANTITY: | |
162 | tuple_child = g_variant_get_child_value(data, 0); | |
163 | mq = g_variant_get_uint32(tuple_child); | |
164 | tuple_child = g_variant_get_child_value(data, 1); | |
165 | mq_flags = g_variant_get_uint64(tuple_child); | |
166 | g_variant_unref(tuple_child); | |
167 | return hp_3478a_set_mq(sdi, mq, mq_flags); | |
168 | default: | |
169 | return SR_ERR_NA; | |
170 | } | |
171 | ||
172 | return SR_OK; | |
173 | } | |
174 | ||
175 | static int config_list(uint32_t key, GVariant **data, | |
176 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
177 | { | |
178 | unsigned int i; | |
179 | GVariant *gvar, *arr[2]; | |
180 | GVariantBuilder gvb; | |
181 | ||
182 | switch (key) { | |
183 | case SR_CONF_SCAN_OPTIONS: | |
184 | case SR_CONF_DEVICE_OPTIONS: | |
185 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
186 | case SR_CONF_MEASURED_QUANTITY: | |
187 | /* | |
188 | * TODO: move to std.c as | |
189 | * SR_PRIV GVariant *std_gvar_measured_quantities() | |
190 | */ | |
191 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
192 | for (i = 0; i < ARRAY_SIZE(mqopts); i++) { | |
193 | arr[0] = g_variant_new_uint32(mqopts[i].mq); | |
194 | arr[1] = g_variant_new_uint64(mqopts[i].mqflag); | |
195 | gvar = g_variant_new_tuple(arr, 2); | |
196 | g_variant_builder_add_value(&gvb, gvar); | |
197 | } | |
198 | *data = g_variant_builder_end(&gvb); | |
199 | break; | |
200 | default: | |
201 | return SR_ERR_NA; | |
202 | } | |
203 | ||
204 | return SR_OK; | |
205 | } | |
206 | ||
207 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
208 | { | |
209 | struct sr_scpi_dev_inst *scpi; | |
210 | struct dev_context *devc; | |
211 | ||
212 | scpi = sdi->conn; | |
213 | devc = sdi->priv; | |
214 | ||
215 | sr_sw_limits_acquisition_start(&devc->limits); | |
216 | std_session_send_df_header(sdi); | |
217 | ||
218 | /* | |
219 | * NOTE: For faster readings, there are some things one can do: | |
220 | * - Turn off the display: sr_scpi_send(scpi, "D3SIGROK"). | |
221 | * - Set the line frequency to 60Hz via switch (back of the unit). | |
222 | * - Set to 3.5 digits measurement (add config key SR_CONF_DIGITS). | |
223 | */ | |
224 | ||
225 | /* Set to internal trigger. */ | |
226 | sr_scpi_send(scpi, "T1"); | |
227 | /* Get device status. */ | |
228 | hp_3478a_get_status_bytes(sdi); | |
229 | ||
230 | return sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100, | |
231 | hp_3478a_receive_data, (void *)sdi); | |
232 | } | |
233 | ||
234 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
235 | { | |
236 | struct sr_scpi_dev_inst *scpi; | |
237 | ||
238 | scpi = sdi->conn; | |
239 | ||
240 | sr_scpi_source_remove(sdi->session, scpi); | |
241 | std_session_send_df_end(sdi); | |
242 | ||
243 | /* Set to internal trigger. */ | |
244 | sr_scpi_send(scpi, "T1"); | |
245 | /* Turn on display. */ | |
246 | sr_scpi_send(scpi, "D1"); | |
247 | ||
248 | return SR_OK; | |
249 | } | |
250 | ||
251 | SR_PRIV struct sr_dev_driver hp_3478a_driver_info = { | |
252 | .name = "hp-3478a", | |
253 | .longname = "HP 3478A", | |
254 | .api_version = 1, | |
255 | .init = std_init, | |
256 | .cleanup = std_cleanup, | |
257 | .scan = scan, | |
258 | .dev_list = std_dev_list, | |
259 | .dev_clear = std_dev_clear, | |
260 | .config_get = config_get, | |
261 | .config_set = config_set, | |
262 | .config_list = config_list, | |
263 | .dev_open = dev_open, | |
264 | .dev_close = dev_close, | |
265 | .dev_acquisition_start = dev_acquisition_start, | |
266 | .dev_acquisition_stop = dev_acquisition_stop, | |
267 | .context = NULL, | |
268 | }; | |
269 | ||
270 | SR_REGISTER_DEV_DRIVER(hp_3478a_driver_info); |