2 * This file is part of the libsigrok 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 static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
42 struct sr_datafeed_packet packet;
43 struct sr_datafeed_analog analog;
44 struct dev_context *devc;
49 memset(&analog, 0, sizeof(struct sr_datafeed_analog));
51 analog.probes = sdi->probes;
52 analog.num_samples = 1;
55 dmms[dmm].packet_parse(buf, &floatval, &analog, info);
56 analog.data = &floatval;
58 /* If this DMM needs additional handling, call the resp. function. */
59 if (dmms[dmm].dmm_details)
60 dmms[dmm].dmm_details(&analog, info);
62 if (analog.mq != -1) {
63 /* Got a measurement. */
64 packet.type = SR_DF_ANALOG;
65 packet.payload = &analog;
66 sr_session_send(devc->cb_data, &packet);
71 static void handle_new_data(struct sr_dev_inst *sdi, int dmm, void *info)
73 struct dev_context *devc;
74 int len, i, offset = 0;
75 struct sr_serial_dev_inst *serial;
80 /* Try to get as much data as the buffer can hold. */
81 len = DMM_BUFSIZE - devc->buflen;
82 len = serial_read(serial, devc->buf + devc->buflen, len);
84 sr_err("Serial port read error: %d.", len);
89 /* Now look for packets in that data. */
90 while ((devc->buflen - offset) >= dmms[dmm].packet_size) {
91 if (dmms[dmm].packet_valid(devc->buf + offset)) {
92 handle_packet(devc->buf + offset, sdi, dmm, info);
93 offset += dmms[dmm].packet_size;
99 /* If we have any data left, move it to the beginning of our buffer. */
100 for (i = 0; i < devc->buflen - offset; i++)
101 devc->buf[i] = devc->buf[offset + i];
102 devc->buflen -= offset;
105 static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
107 struct sr_dev_inst *sdi;
108 struct dev_context *devc;
109 struct sr_serial_dev_inst *serial;
115 if (!(sdi = cb_data))
118 if (!(devc = sdi->priv))
123 if (revents == G_IO_IN) {
124 /* Serial data arrived. */
125 handle_new_data(sdi, dmm, info);
127 /* Timeout, send another packet request (if DMM needs it). */
128 if (dmms[dmm].packet_request) {
129 ret = dmms[dmm].packet_request(serial);
131 sr_err("Failed to request packet: %d.", ret);
137 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
138 sr_info("Requested number of samples reached.");
139 sdi->driver->dev_acquisition_stop(sdi, cb_data);
143 if (devc->limit_msec) {
144 time = (g_get_monotonic_time() - devc->starttime) / 1000;
145 if (time > (int64_t)devc->limit_msec) {
146 sr_info("Requested time limit reached.");
147 sdi->driver->dev_acquisition_stop(sdi, cb_data);
155 #define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \
156 SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \
157 struct DMM_DRIVER##_info info; \
158 return receive_data(fd, revents, ID_UPPER, &info, cb_data); }
160 /* Driver-specific receive_data() wrappers */
161 RECEIVE_DATA(DIGITEK_DT4000ZC, fs9721)
162 RECEIVE_DATA(TEKPOWER_TP4000ZC, fs9721)
163 RECEIVE_DATA(METEX_ME31, metex14)
164 RECEIVE_DATA(PEAKTECH_3410, metex14)
165 RECEIVE_DATA(MASTECH_MAS345, metex14)
166 RECEIVE_DATA(VA_VA18B, fs9721)
167 RECEIVE_DATA(METEX_M3640D, metex14)
168 RECEIVE_DATA(PEAKTECH_4370, metex14)
169 RECEIVE_DATA(PCE_PCE_DM32, fs9721)
170 RECEIVE_DATA(RADIOSHACK_22_168, metex14)
171 RECEIVE_DATA(RADIOSHACK_22_805, metex14)
172 RECEIVE_DATA(RADIOSHACK_22_812, rs9lcd)
173 RECEIVE_DATA(TECPEL_DMM_8060_SER, fs9721)
174 RECEIVE_DATA(TECPEL_DMM_8061_SER, fs9721)
175 RECEIVE_DATA(VOLTCRAFT_M3650D, metex14)
176 RECEIVE_DATA(VOLTCRAFT_VC820_SER, fs9721)
177 RECEIVE_DATA(VOLTCRAFT_VC830_SER, fs9922)
178 RECEIVE_DATA(VOLTCRAFT_VC840_SER, fs9721)
179 RECEIVE_DATA(UNI_T_UT60A_SER, fs9721)
180 RECEIVE_DATA(UNI_T_UT60E_SER, fs9721)
181 RECEIVE_DATA(UNI_T_UT61D_SER, fs9922)
182 RECEIVE_DATA(UNI_T_UT61E_SER, es51922)