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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2017 John Chajecki <subs@qcontinuum.plus.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <glib.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <string.h> | |
27 | #include <stdint.h> | |
28 | #include <stdbool.h> | |
29 | #include <libsigrok/libsigrok.h> | |
30 | #include "libsigrok-internal.h" | |
31 | #include "scpi.h" | |
32 | #include "protocol.h" | |
33 | ||
34 | /* | |
35 | * This test violates the SCPI protocol, and confuses other devices. | |
36 | * Disable it for now, until a better location was found. | |
37 | */ | |
38 | #define ECHO_TEST 0 | |
39 | ||
40 | static const uint32_t scanopts[] = { | |
41 | SR_CONF_CONN, | |
42 | SR_CONF_SERIALCOMM, | |
43 | }; | |
44 | ||
45 | static const uint32_t drvopts[] = { | |
46 | SR_CONF_MULTIMETER, | |
47 | }; | |
48 | ||
49 | static const uint32_t devopts[] = { | |
50 | SR_CONF_CONTINUOUS, | |
51 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
52 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
53 | }; | |
54 | ||
55 | /* Vendor, model, number of channels, poll period */ | |
56 | static const struct fluke_scpi_dmm_model supported_models[] = { | |
57 | { "FLUKE", "45", 2, 0 }, | |
58 | }; | |
59 | ||
60 | static struct sr_dev_driver fluke_45_driver_info; | |
61 | ||
62 | static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi) | |
63 | { | |
64 | struct dev_context *devc; | |
65 | struct sr_dev_inst *sdi; | |
66 | struct sr_scpi_hw_info *hw_info; | |
67 | const struct scpi_command *cmdset = fluke_45_cmdset; | |
68 | unsigned int i; | |
69 | const struct fluke_scpi_dmm_model *model = NULL; | |
70 | gchar *channel_name; | |
71 | #if ECHO_TEST | |
72 | char *response; | |
73 | #endif | |
74 | ||
75 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
76 | sdi->conn = scpi; | |
77 | ||
78 | #if ECHO_TEST | |
79 | /* Test for serial port ECHO enabled. */ | |
80 | response = NULL; | |
81 | sr_scpi_get_string(scpi, "ECHO-TEST", &response); | |
82 | if (response && strcmp(response, "ECHO-TEST") == 0) { | |
83 | sr_err("Serial port ECHO is ON. Please turn it OFF!"); | |
84 | return NULL; | |
85 | } | |
86 | #endif | |
87 | ||
88 | /* Get device IDN. */ | |
89 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
90 | sr_info("Couldn't get IDN response, retrying."); | |
91 | sr_scpi_close(scpi); | |
92 | sr_scpi_open(scpi); | |
93 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
94 | sr_info("Couldn't get IDN response."); | |
95 | return NULL; | |
96 | } | |
97 | } | |
98 | ||
99 | /* Check IDN. */ | |
100 | for (i = 0; i < ARRAY_SIZE(supported_models); i++) { | |
101 | if (!g_ascii_strcasecmp(hw_info->manufacturer, | |
102 | supported_models[i].vendor) && | |
103 | !strcmp(hw_info->model, supported_models[i].model)) { | |
104 | model = &supported_models[i]; | |
105 | break; | |
106 | } | |
107 | } | |
108 | if (!model) { | |
109 | sr_scpi_hw_info_free(hw_info); | |
110 | return NULL; | |
111 | } | |
112 | ||
113 | /* Set up device parameters. */ | |
114 | sdi->vendor = g_strdup(model->vendor); | |
115 | sdi->model = g_strdup(model->model); | |
116 | sdi->version = g_strdup(hw_info->firmware_version); | |
117 | sdi->serial_num = g_strdup(hw_info->serial_number); | |
118 | sdi->conn = scpi; | |
119 | sdi->driver = &fluke_45_driver_info; | |
120 | sdi->inst_type = SR_INST_SCPI; | |
121 | ||
122 | devc = g_malloc0(sizeof(struct dev_context)); | |
123 | devc->num_channels = model->num_channels; | |
124 | devc->cmdset = cmdset; | |
125 | ||
126 | /* Create channels. */ | |
127 | for (i = 0; i < devc->num_channels; i++) { | |
128 | channel_name = g_strdup_printf("P%d", i + 1); | |
129 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, channel_name); | |
130 | } | |
131 | ||
132 | sdi->priv = devc; | |
133 | ||
134 | return sdi; | |
135 | } | |
136 | ||
137 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
138 | { | |
139 | return sr_scpi_scan(di->context, options, probe_device); | |
140 | } | |
141 | ||
142 | static int dev_open(struct sr_dev_inst *sdi) | |
143 | { | |
144 | struct sr_scpi_dev_inst *scpi; | |
145 | int ret; | |
146 | ||
147 | scpi = sdi->conn; | |
148 | ||
149 | if ((ret = sr_scpi_open(scpi) < 0)) { | |
150 | sr_err("Failed to open SCPI device: %s.", sr_strerror(ret)); | |
151 | return SR_ERR; | |
152 | } | |
153 | ||
154 | return SR_OK; | |
155 | } | |
156 | ||
157 | static int dev_close(struct sr_dev_inst *sdi) | |
158 | { | |
159 | struct sr_scpi_dev_inst *scpi; | |
160 | ||
161 | scpi = sdi->conn; | |
162 | ||
163 | if (!scpi) | |
164 | return SR_ERR_BUG; | |
165 | ||
166 | return sr_scpi_close(scpi); | |
167 | } | |
168 | ||
169 | static int config_set(uint32_t key, GVariant *data, | |
170 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
171 | { | |
172 | struct dev_context *devc; | |
173 | ||
174 | (void)cg; | |
175 | ||
176 | devc = sdi->priv; | |
177 | ||
178 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
179 | } | |
180 | ||
181 | static int config_list(uint32_t key, GVariant **data, | |
182 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
183 | { | |
184 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
185 | } | |
186 | ||
187 | static int config_get(uint32_t key, GVariant **data, | |
188 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
189 | { | |
190 | struct dev_context *devc = sdi->priv; | |
191 | ||
192 | (void)cg; | |
193 | ||
194 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
195 | } | |
196 | ||
197 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
198 | { | |
199 | struct sr_scpi_dev_inst *scpi; | |
200 | struct dev_context *devc; | |
201 | int ret; | |
202 | ||
203 | scpi = sdi->conn; | |
204 | devc = sdi->priv; | |
205 | ||
206 | sr_sw_limits_acquisition_start(&devc->limits); | |
207 | std_session_send_df_header(sdi); | |
208 | ||
209 | if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10, | |
210 | fl45_scpi_receive_data, (void *)sdi)) != SR_OK) | |
211 | return ret; | |
212 | ||
213 | return SR_OK; | |
214 | } | |
215 | ||
216 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
217 | { | |
218 | struct sr_scpi_dev_inst *scpi; | |
219 | double d; | |
220 | ||
221 | scpi = sdi->conn; | |
222 | ||
223 | /* | |
224 | * A requested value is certainly on the way. Retrieve it now, | |
225 | * to avoid leaving the device in a state where it's not expecting | |
226 | * commands. | |
227 | */ | |
228 | sr_scpi_get_double(scpi, NULL, &d); | |
229 | sr_scpi_source_remove(sdi->session, scpi); | |
230 | ||
231 | std_session_send_df_end(sdi); | |
232 | ||
233 | return SR_OK; | |
234 | } | |
235 | ||
236 | static struct sr_dev_driver fluke_45_driver_info = { | |
237 | .name = "fluke-45", | |
238 | .longname = "Fluke 45", | |
239 | .api_version = 1, | |
240 | .init = std_init, | |
241 | .cleanup = std_cleanup, | |
242 | .scan = scan, | |
243 | .dev_list = std_dev_list, | |
244 | .dev_clear = std_dev_clear, | |
245 | .config_get = config_get, | |
246 | .config_set = config_set, | |
247 | .config_list = config_list, | |
248 | .dev_open = dev_open, | |
249 | .dev_close = dev_close, | |
250 | .dev_acquisition_start = dev_acquisition_start, | |
251 | .dev_acquisition_stop = dev_acquisition_stop, | |
252 | .context = NULL, | |
253 | }; | |
254 | SR_REGISTER_DEV_DRIVER(fluke_45_driver_info); |