2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
5 * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
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.
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.
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/>.
26 #include "libsigrok.h"
27 #include "libsigrok-internal.h"
30 static void log_dmm_packet(const uint8_t *buf)
32 sr_dbg("DMM packet: %02x %02x %02x %02x %02x %02x %02x"
33 " %02x %02x %02x %02x %02x %02x %02x",
34 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6],
35 buf[7], buf[8], buf[9], buf[10], buf[11], buf[12], buf[13]);
38 SR_PRIV void dmm_details_dt4000zc(struct sr_datafeed_analog *analog, void *info)
40 dmm_details_tp4000zc(analog, info); /* Same as TP4000ZC. */
43 SR_PRIV void dmm_details_tp4000zc(struct sr_datafeed_analog *analog, void *info)
45 struct fs9721_info *info_local;
47 info_local = (struct fs9721_info *)info;
49 /* User-defined FS9721_LP3 flag 'c2c1_10' means temperature. */
50 if (info_local->is_c2c1_10) {
51 analog->mq = SR_MQ_TEMPERATURE;
52 analog->unit = SR_UNIT_CELSIUS;
56 SR_PRIV void dmm_details_va18b(struct sr_datafeed_analog *analog, void *info)
58 struct fs9721_info *info_local;
60 info_local = (struct fs9721_info *)info;
62 /* User-defined FS9721_LP3 flag 'c2c1_01' means temperature. */
63 if (info_local->is_c2c1_01) {
64 analog->mq = SR_MQ_TEMPERATURE;
65 analog->unit = SR_UNIT_CELSIUS;
69 SR_PRIV void dmm_details_pce_dm32(struct sr_datafeed_analog *analog, void *info)
71 struct fs9721_info *info_local;
73 info_local = (struct fs9721_info *)info;
75 /* User-defined FS9721_LP3 flag 'c2c1_01' means temperature (F). */
76 if (info_local->is_c2c1_01) {
77 analog->mq = SR_MQ_TEMPERATURE;
78 analog->unit = SR_UNIT_FAHRENHEIT;
81 /* User-defined FS9721_LP3 flag 'c2c1_10' means temperature (C). */
82 if (info_local->is_c2c1_10) {
83 analog->mq = SR_MQ_TEMPERATURE;
84 analog->unit = SR_UNIT_CELSIUS;
88 static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
92 struct sr_datafeed_packet packet;
93 struct sr_datafeed_analog analog;
94 struct dev_context *devc;
99 memset(&analog, 0, sizeof(struct sr_datafeed_analog));
101 analog.probes = sdi->probes;
102 analog.num_samples = 1;
105 dmms[dmm].packet_parse(buf, &floatval, &analog, info);
106 analog.data = &floatval;
108 /* If this DMM needs additional handling, call the resp. function. */
109 if (dmms[dmm].dmm_details)
110 dmms[dmm].dmm_details(&analog, info);
112 if (analog.mq != -1) {
113 /* Got a measurement. */
114 packet.type = SR_DF_ANALOG;
115 packet.payload = &analog;
116 sr_session_send(devc->cb_data, &packet);
121 static void handle_new_data(struct sr_dev_inst *sdi, int dmm, void *info)
123 struct dev_context *devc;
124 int len, i, offset = 0;
128 /* Try to get as much data as the buffer can hold. */
129 len = DMM_BUFSIZE - devc->buflen;
130 len = serial_read(devc->serial, devc->buf + devc->buflen, len);
132 sr_err("Serial port read error: %d.", len);
137 /* Now look for packets in that data. */
138 while ((devc->buflen - offset) >= dmms[dmm].packet_size) {
139 if (dmms[dmm].packet_valid(devc->buf + offset)) {
140 handle_packet(devc->buf + offset, sdi, dmm, info);
141 offset += dmms[dmm].packet_size;
147 /* If we have any data left, move it to the beginning of our buffer. */
148 for (i = 0; i < devc->buflen - offset; i++)
149 devc->buf[i] = devc->buf[offset + i];
150 devc->buflen -= offset;
153 static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
155 struct sr_dev_inst *sdi;
156 struct dev_context *devc;
162 if (!(sdi = cb_data))
165 if (!(devc = sdi->priv))
168 if (revents == G_IO_IN) {
169 /* Serial data arrived. */
170 handle_new_data(sdi, dmm, info);
172 /* Timeout, send another packet request (if DMM needs it). */
173 if (dmms[dmm].packet_request) {
174 ret = dmms[dmm].packet_request(devc->serial);
176 sr_err("Failed to request packet: %d.", ret);
182 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
183 sr_info("Requested number of samples reached.");
184 sdi->driver->dev_acquisition_stop(sdi, cb_data);
188 if (devc->limit_msec) {
189 time = (g_get_monotonic_time() - devc->starttime) / 1000;
190 if (time > (int64_t)devc->limit_msec) {
191 sr_info("Requested time limit reached.");
192 sdi->driver->dev_acquisition_stop(sdi, cb_data);
200 #define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \
201 SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \
202 struct DMM_DRIVER##_info info; \
203 return receive_data(fd, revents, ID_UPPER, &info, cb_data); }
205 /* Driver-specific receive_data() wrappers */
206 RECEIVE_DATA(DIGITEK_DT4000ZC, fs9721)
207 RECEIVE_DATA(TEKPOWER_TP4000ZC, fs9721)
208 RECEIVE_DATA(METEX_ME31, metex14)
209 RECEIVE_DATA(PEAKTECH_3410, metex14)
210 RECEIVE_DATA(MASTECH_MAS345, metex14)
211 RECEIVE_DATA(VA_VA18B, fs9721)
212 RECEIVE_DATA(METEX_M3640D, metex14)
213 RECEIVE_DATA(PEAKTECH_4370, metex14)
214 RECEIVE_DATA(PCE_PCE_DM32, fs9721)
215 RECEIVE_DATA(RADIOSHACK_22_168, metex14)
216 RECEIVE_DATA(RADIOSHACK_22_812, rs9lcd)
217 RECEIVE_DATA(VOLTCRAFT_VC820_SER, fs9721)
218 RECEIVE_DATA(VOLTCRAFT_VC840_SER, fs9721)
219 RECEIVE_DATA(UNI_T_UT61E_SER, es51922)