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1 | /* | |
2 | * This file is part of the sigrok 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 <glib.h> | |
21 | #include "libsigrok.h" | |
22 | #include "libsigrok-internal.h" | |
23 | #include "config.h" | |
24 | #include "fluke-dmm.h" | |
25 | #include <stdlib.h> | |
26 | #include <math.h> | |
27 | #include <string.h> | |
28 | #include <errno.h> | |
29 | ||
30 | ||
31 | static struct sr_datafeed_analog *handle_qm_v2(const struct sr_dev_inst *sdi, | |
32 | char **tokens) | |
33 | { | |
34 | struct sr_datafeed_analog *analog; | |
35 | float fvalue; | |
36 | char *eptr; | |
37 | ||
38 | (void)sdi; | |
39 | fvalue = strtof(tokens[0], &eptr); | |
40 | if (fvalue == 0.0 && eptr == tokens[0]) { | |
41 | sr_err("fluke-dmm: invalid float"); | |
42 | return NULL; | |
43 | } | |
44 | ||
45 | analog = g_try_malloc0(sizeof(struct sr_datafeed_analog)); | |
46 | analog->num_samples = 1; | |
47 | analog->data = g_try_malloc(sizeof(float)); | |
48 | *analog->data = fvalue; | |
49 | analog->mq = -1; | |
50 | ||
51 | if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) { | |
52 | analog->mq = SR_MQ_VOLTAGE; | |
53 | analog->unit = SR_UNIT_VOLT; | |
54 | if (!strcmp(tokens[2], "NORMAL")) { | |
55 | if (tokens[1][1] == 'A') { | |
56 | analog->mqflags |= SR_MQFLAG_AC; | |
57 | analog->mqflags |= SR_MQFLAG_RMS; | |
58 | } else | |
59 | analog->mqflags |= SR_MQFLAG_DC; | |
60 | } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) { | |
61 | *analog->data = NAN; | |
62 | } else | |
63 | analog->mq = -1; | |
64 | } if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) { | |
65 | if (!strcmp(tokens[2], "NORMAL")) { | |
66 | analog->mq = SR_MQ_TEMPERATURE; | |
67 | if (tokens[1][0] == 'C') | |
68 | analog->unit = SR_UNIT_CELSIUS; | |
69 | else | |
70 | analog->unit = SR_UNIT_FAHRENHEIT; | |
71 | } | |
72 | } if (!strcmp(tokens[1], "OHM")) { | |
73 | if (!strcmp(tokens[3], "NONE")) { | |
74 | analog->mq = SR_MQ_RESISTANCE; | |
75 | analog->unit = SR_UNIT_OHM; | |
76 | if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) { | |
77 | *analog->data = INFINITY; | |
78 | } else if (strcmp(tokens[2], "NORMAL")) | |
79 | analog->mq = -1; | |
80 | } else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) { | |
81 | analog->mq = SR_MQ_CONTINUITY; | |
82 | analog->unit = SR_UNIT_BOOLEAN; | |
83 | *analog->data = 0.0; | |
84 | } else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) { | |
85 | analog->mq = SR_MQ_CONTINUITY; | |
86 | analog->unit = SR_UNIT_BOOLEAN; | |
87 | *analog->data = 1.0; | |
88 | } | |
89 | } if (!strcmp(tokens[1], "F") | |
90 | && !strcmp(tokens[2], "NORMAL") | |
91 | && !strcmp(tokens[3], "NONE")) { | |
92 | analog->mq = SR_MQ_CAPACITANCE; | |
93 | analog->unit = SR_UNIT_FARAD; | |
94 | } else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) { | |
95 | analog->mq = SR_MQ_CURRENT; | |
96 | analog->unit = SR_UNIT_AMPERE; | |
97 | analog->mqflags = SR_MQFLAG_RMS; | |
98 | if (!strcmp(tokens[2], "NORMAL")) { | |
99 | if (tokens[1][1] == 'A') { | |
100 | analog->mqflags |= SR_MQFLAG_AC; | |
101 | analog->mqflags |= SR_MQFLAG_RMS; | |
102 | } else | |
103 | analog->mqflags |= SR_MQFLAG_DC; | |
104 | } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) { | |
105 | *analog->data = NAN; | |
106 | } else | |
107 | analog->mq = -1; | |
108 | } if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) { | |
109 | analog->mq = SR_MQ_FREQUENCY; | |
110 | analog->unit = SR_UNIT_HERTZ; | |
111 | } if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) { | |
112 | analog->mq = SR_MQ_DUTY_CYCLE; | |
113 | analog->unit = SR_UNIT_PERCENTAGE; | |
114 | } if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) { | |
115 | analog->mq = SR_MQ_PULSE_WIDTH; | |
116 | analog->unit = SR_UNIT_SECOND; | |
117 | } if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) { | |
118 | analog->mq = SR_MQ_CONDUCTANCE; | |
119 | analog->unit = SR_UNIT_SIEMENS; | |
120 | } | |
121 | ||
122 | ||
123 | if (analog->mq == -1) { | |
124 | /* Not a valid measurement. */ | |
125 | g_free(analog->data); | |
126 | g_free(analog); | |
127 | analog = NULL; | |
128 | } | |
129 | ||
130 | return analog; | |
131 | } | |
132 | ||
133 | static void handle_line(const struct sr_dev_inst *sdi) | |
134 | { | |
135 | struct dev_context *devc; | |
136 | struct sr_datafeed_packet packet; | |
137 | struct sr_datafeed_analog *analog; | |
138 | char **tokens; | |
139 | ||
140 | devc = sdi->priv; | |
141 | sr_spew("fluke-dmm: received line '%s' (%d)", devc->buf, devc->buflen); | |
142 | ||
143 | if (devc->buflen == 1) { | |
144 | if (devc->buf[0] != '0') { | |
145 | /* Not just a CMD_ACK from the query command. */ | |
146 | sr_dbg("fluke-dmm: got CMD_ACK '%c'", devc->buf[0]); | |
147 | devc->expect_response = FALSE; | |
148 | } | |
149 | devc->buflen = 0; | |
150 | return; | |
151 | } | |
152 | ||
153 | analog = NULL; | |
154 | tokens = g_strsplit(devc->buf, ",", 0); | |
155 | if (devc->profile->model == FLUKE_187) { | |
156 | if (!strcmp(tokens[0], "QM")) { | |
157 | /* Yes, this is the response to the query. */ | |
158 | devc->expect_response = FALSE; | |
159 | sr_spew("187 line"); | |
160 | /* TODO */ | |
161 | devc->buflen = 0; | |
162 | } | |
163 | } else if (devc->profile->model == FLUKE_287) { | |
164 | devc->expect_response = FALSE; | |
165 | analog = handle_qm_v2(sdi, tokens); | |
166 | } | |
167 | g_strfreev(tokens); | |
168 | devc->buflen = 0; | |
169 | ||
170 | if (analog) { | |
171 | /* Got a measurement. */ | |
172 | sr_dbg("val %f", *analog->data); | |
173 | packet.type = SR_DF_ANALOG; | |
174 | packet.payload = analog; | |
175 | sr_session_send(devc->cb_data, &packet); | |
176 | devc->num_samples++; | |
177 | g_free(analog->data); | |
178 | g_free(analog); | |
179 | } | |
180 | ||
181 | } | |
182 | ||
183 | SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data) | |
184 | { | |
185 | const struct sr_dev_inst *sdi; | |
186 | struct dev_context *devc; | |
187 | int len; | |
188 | int64_t now, elapsed; | |
189 | ||
190 | if (!(sdi = cb_data)) | |
191 | return TRUE; | |
192 | ||
193 | if (!(devc = sdi->priv)) | |
194 | return TRUE; | |
195 | ||
196 | if (revents == G_IO_IN) { | |
197 | /* Serial data arrived. */ | |
198 | while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) { | |
199 | len = serial_read(fd, devc->buf + devc->buflen, 1); | |
200 | if (len < 1) | |
201 | break; | |
202 | devc->buflen++; | |
203 | *(devc->buf + devc->buflen) = '\0'; | |
204 | if (*(devc->buf + devc->buflen - 1) == '\r') { | |
205 | *(devc->buf + --devc->buflen) = '\0'; | |
206 | handle_line(sdi); | |
207 | break; | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | if (devc->num_samples >= devc->limit_samples) { | |
213 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
214 | return TRUE; | |
215 | } | |
216 | ||
217 | now = g_get_monotonic_time() / 1000; | |
218 | elapsed = now - devc->cmd_sent_at; | |
219 | /* Send query command at poll_period interval, or after 1 second | |
220 | * has elapsed. This will make it recover from any out-of-sync | |
221 | * or temporary disconnect issues. */ | |
222 | if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period) | |
223 | || elapsed > 1000) { | |
224 | sr_spew("fluke-dmm: sending QM"); | |
225 | if (serial_write(devc->serial->fd, "QM\r", 3) == -1) | |
226 | sr_err("fluke-dmm: unable to send QM: %s", strerror(errno)); | |
227 | devc->cmd_sent_at = now; | |
228 | devc->expect_response = TRUE; | |
229 | } | |
230 | ||
231 | return TRUE; | |
232 | } | |
233 | ||
234 |