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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 | * | |
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 <glib.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | #include <fcntl.h> | |
25 | #include <string.h> | |
26 | #include <libsigrok/libsigrok.h> | |
27 | #include "libsigrok-internal.h" | |
28 | #include "protocol.h" | |
29 | ||
30 | static const uint32_t scanopts[] = { | |
31 | SR_CONF_CONN, | |
32 | SR_CONF_SERIALCOMM, | |
33 | }; | |
34 | ||
35 | static const uint32_t devopts[] = { | |
36 | SR_CONF_MULTIMETER, | |
37 | SR_CONF_CONTINUOUS, | |
38 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
39 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
40 | }; | |
41 | ||
42 | static const char *scan_conn[] = { | |
43 | /* 287/289 */ | |
44 | "115200/8n1", | |
45 | /* 187/189 */ | |
46 | "9600/8n1", | |
47 | /* Scopemeter 190 series */ | |
48 | "1200/8n1", | |
49 | NULL | |
50 | }; | |
51 | ||
52 | static const struct flukedmm_profile supported_flukedmm[] = { | |
53 | { FLUKE_187, "187", 100, 1000 }, | |
54 | { FLUKE_189, "189", 100, 1000 }, | |
55 | { FLUKE_287, "287", 100, 1000 }, | |
56 | { FLUKE_190, "199B", 1000, 3500 }, | |
57 | { FLUKE_289, "289", 100, 1000 }, | |
58 | }; | |
59 | ||
60 | static GSList *fluke_scan(struct sr_dev_driver *di, const char *conn, | |
61 | const char *serialcomm) | |
62 | { | |
63 | struct sr_dev_inst *sdi; | |
64 | struct dev_context *devc; | |
65 | struct sr_serial_dev_inst *serial; | |
66 | GSList *devices; | |
67 | int retry, len, i, s; | |
68 | char buf[128], *b, **tokens; | |
69 | ||
70 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
71 | ||
72 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
73 | return NULL; | |
74 | ||
75 | b = buf; | |
76 | retry = 0; | |
77 | devices = NULL; | |
78 | /* We'll try the discovery sequence three times in case the device | |
79 | * is not in an idle state when we send ID. */ | |
80 | while (!devices && retry < 3) { | |
81 | retry++; | |
82 | serial_flush(serial); | |
83 | if (serial_write_blocking(serial, "ID\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0) { | |
84 | sr_err("Unable to send ID string"); | |
85 | continue; | |
86 | } | |
87 | ||
88 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, | |
89 | * or '1' to signify an error. */ | |
90 | len = 128; | |
91 | serial_readline(serial, &b, &len, 150); | |
92 | if (len != 1) | |
93 | continue; | |
94 | if (buf[0] != '0') | |
95 | continue; | |
96 | ||
97 | /* If CMD_ACK was OK, ID string follows. */ | |
98 | len = 128; | |
99 | serial_readline(serial, &b, &len, 850); | |
100 | if (len < 10) | |
101 | continue; | |
102 | if (strcspn(buf, ",") < 15) | |
103 | /* Looks like it's comma-separated. */ | |
104 | tokens = g_strsplit(buf, ",", 3); | |
105 | else | |
106 | /* Fluke 199B, at least, uses semicolon. */ | |
107 | tokens = g_strsplit(buf, ";", 3); | |
108 | if (!strncmp("FLUKE", tokens[0], 5) | |
109 | && tokens[1] && tokens[2]) { | |
110 | for (i = 0; supported_flukedmm[i].model; i++) { | |
111 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
112 | continue; | |
113 | /* Skip leading spaces in version number. */ | |
114 | for (s = 0; tokens[1][s] == ' '; s++); | |
115 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
116 | sdi->status = SR_ST_INACTIVE; | |
117 | sdi->vendor = g_strdup("Fluke"); | |
118 | sdi->model = g_strdup(tokens[0] + 6); | |
119 | sdi->version = g_strdup(tokens[1] + s); | |
120 | devc = g_malloc0(sizeof(struct dev_context)); | |
121 | sr_sw_limits_init(&devc->limits); | |
122 | devc->profile = &supported_flukedmm[i]; | |
123 | sdi->inst_type = SR_INST_SERIAL; | |
124 | sdi->conn = serial; | |
125 | sdi->priv = devc; | |
126 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
127 | devices = g_slist_append(devices, sdi); | |
128 | break; | |
129 | } | |
130 | } | |
131 | g_strfreev(tokens); | |
132 | if (devices) | |
133 | /* Found one. */ | |
134 | break; | |
135 | } | |
136 | serial_close(serial); | |
137 | if (!devices) | |
138 | sr_serial_dev_inst_free(serial); | |
139 | ||
140 | return std_scan_complete(di, devices); | |
141 | } | |
142 | ||
143 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
144 | { | |
145 | struct sr_config *src; | |
146 | GSList *l, *devices; | |
147 | int i; | |
148 | const char *conn, *serialcomm; | |
149 | ||
150 | conn = serialcomm = NULL; | |
151 | for (l = options; l; l = l->next) { | |
152 | src = l->data; | |
153 | switch (src->key) { | |
154 | case SR_CONF_CONN: | |
155 | conn = g_variant_get_string(src->data, NULL); | |
156 | break; | |
157 | case SR_CONF_SERIALCOMM: | |
158 | serialcomm = g_variant_get_string(src->data, NULL); | |
159 | break; | |
160 | } | |
161 | } | |
162 | if (!conn) | |
163 | return NULL; | |
164 | ||
165 | devices = NULL; | |
166 | if (serialcomm) { | |
167 | /* Use the provided comm specs. */ | |
168 | devices = fluke_scan(di, conn, serialcomm); | |
169 | } else { | |
170 | for (i = 0; scan_conn[i]; i++) { | |
171 | if ((devices = fluke_scan(di, conn, scan_conn[i]))) | |
172 | break; | |
173 | /* The Scopemeter 199B, at least, requires this | |
174 | * after all the 115k/9.6k confusion. */ | |
175 | g_usleep(5 * 1000); | |
176 | } | |
177 | } | |
178 | ||
179 | return devices; | |
180 | } | |
181 | ||
182 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
183 | const struct sr_channel_group *cg) | |
184 | { | |
185 | struct dev_context *devc; | |
186 | ||
187 | (void)cg; | |
188 | ||
189 | if (sdi->status != SR_ST_ACTIVE) | |
190 | return SR_ERR_DEV_CLOSED; | |
191 | ||
192 | devc = sdi->priv; | |
193 | ||
194 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
195 | } | |
196 | ||
197 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
198 | const struct sr_channel_group *cg) | |
199 | { | |
200 | (void)sdi; | |
201 | (void)cg; | |
202 | ||
203 | switch (key) { | |
204 | case SR_CONF_SCAN_OPTIONS: | |
205 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
206 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
207 | break; | |
208 | case SR_CONF_DEVICE_OPTIONS: | |
209 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
210 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
211 | break; | |
212 | default: | |
213 | return SR_ERR_NA; | |
214 | } | |
215 | ||
216 | return SR_OK; | |
217 | } | |
218 | ||
219 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
220 | { | |
221 | struct dev_context *devc; | |
222 | struct sr_serial_dev_inst *serial; | |
223 | ||
224 | if (sdi->status != SR_ST_ACTIVE) | |
225 | return SR_ERR_DEV_CLOSED; | |
226 | ||
227 | devc = sdi->priv; | |
228 | ||
229 | sr_sw_limits_acquisition_start(&devc->limits); | |
230 | std_session_send_df_header(sdi); | |
231 | ||
232 | /* Poll every 100ms, or whenever some data comes in. */ | |
233 | serial = sdi->conn; | |
234 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
235 | fluke_receive_data, (void *)sdi); | |
236 | ||
237 | if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0) { | |
238 | sr_err("Unable to send QM."); | |
239 | return SR_ERR; | |
240 | } | |
241 | devc->cmd_sent_at = g_get_monotonic_time() / 1000; | |
242 | devc->expect_response = TRUE; | |
243 | ||
244 | return SR_OK; | |
245 | } | |
246 | ||
247 | static struct sr_dev_driver flukedmm_driver_info = { | |
248 | .name = "fluke-dmm", | |
249 | .longname = "Fluke 18x/28x series DMMs", | |
250 | .api_version = 1, | |
251 | .init = std_init, | |
252 | .cleanup = std_cleanup, | |
253 | .scan = scan, | |
254 | .dev_list = std_dev_list, | |
255 | .dev_clear = NULL, | |
256 | .config_get = NULL, | |
257 | .config_set = config_set, | |
258 | .config_list = config_list, | |
259 | .dev_open = std_serial_dev_open, | |
260 | .dev_close = std_serial_dev_close, | |
261 | .dev_acquisition_start = dev_acquisition_start, | |
262 | .dev_acquisition_stop = std_serial_dev_acquisition_stop, | |
263 | .context = NULL, | |
264 | }; | |
265 | SR_REGISTER_DEV_DRIVER(flukedmm_driver_info); |