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7dc55d93 AG |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com> | |
729b01f9 | 5 | * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de> |
7dc55d93 AG |
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 <glib.h> | |
7dc55d93 AG |
22 | #include <stdlib.h> |
23 | #include <math.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
bbabddbd UH |
26 | #include "libsigrok.h" |
27 | #include "libsigrok-internal.h" | |
28 | #include "protocol.h" | |
7dc55d93 | 29 | |
6bef68a7 UH |
30 | static void log_dmm_packet(const uint8_t *buf) |
31 | { | |
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]); | |
36 | } | |
37 | ||
f086b830 UH |
38 | SR_PRIV void dmm_details_dt4000zc(struct sr_datafeed_analog *analog, void *info) |
39 | { | |
40 | dmm_details_tp4000zc(analog, info); /* Same as TP4000ZC. */ | |
41 | } | |
42 | ||
729b01f9 UH |
43 | SR_PRIV void dmm_details_tp4000zc(struct sr_datafeed_analog *analog, void *info) |
44 | { | |
45 | struct fs9721_info *info_local; | |
46 | ||
47 | info_local = (struct fs9721_info *)info; | |
48 | ||
49 | /* User-defined FS9721_LP3 flag 'c2c1_10' means temperature. */ | |
50 | if (info_local->is_c2c1_10) { | |
51 | analog->mq = SR_MQ_TEMPERATURE; | |
6dca2f16 UH |
52 | analog->unit = SR_UNIT_CELSIUS; |
53 | } | |
54 | } | |
55 | ||
56 | SR_PRIV void dmm_details_va18b(struct sr_datafeed_analog *analog, void *info) | |
57 | { | |
58 | struct fs9721_info *info_local; | |
59 | ||
60 | info_local = (struct fs9721_info *)info; | |
61 | ||
62 | /* User-defined FS9721_LP3 flag 'c2c1_01' means temperature. */ | |
63 | if (info_local->is_c2c1_01) { | |
64 | analog->mq = SR_MQ_TEMPERATURE; | |
729b01f9 UH |
65 | analog->unit = SR_UNIT_CELSIUS; |
66 | } | |
67 | } | |
68 | ||
69 | static void handle_packet(const uint8_t *buf, struct dev_context *devc, | |
70 | int dmm, void *info) | |
7dc55d93 | 71 | { |
8c1adf37 | 72 | float floatval; |
7dc55d93 AG |
73 | struct sr_datafeed_packet packet; |
74 | struct sr_datafeed_analog *analog; | |
75 | ||
6bef68a7 UH |
76 | log_dmm_packet(buf); |
77 | ||
bbabddbd | 78 | if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog)))) { |
8c1adf37 | 79 | sr_err("Analog packet malloc failed."); |
7dc55d93 AG |
80 | return; |
81 | } | |
bbabddbd | 82 | |
bbabddbd | 83 | analog->num_samples = 1; |
7dc55d93 AG |
84 | analog->mq = -1; |
85 | ||
729b01f9 | 86 | dmms[dmm].packet_parse(buf, &floatval, analog, info); |
d84fc9cb | 87 | analog->data = &floatval; |
be5c1d3b | 88 | |
ce3777ad UH |
89 | if (dmms[dmm].dmm_details) |
90 | dmms[dmm].dmm_details(analog, info); | |
7dc55d93 | 91 | |
7dc55d93 AG |
92 | if (analog->mq != -1) { |
93 | /* Got a measurement. */ | |
7dc55d93 AG |
94 | packet.type = SR_DF_ANALOG; |
95 | packet.payload = analog; | |
96 | sr_session_send(devc->cb_data, &packet); | |
97 | devc->num_samples++; | |
98 | } | |
bbabddbd | 99 | |
7dc55d93 AG |
100 | g_free(analog); |
101 | } | |
102 | ||
729b01f9 | 103 | static void handle_new_data(struct dev_context *devc, int dmm, void *info) |
7dc55d93 | 104 | { |
bbabddbd | 105 | int len, i, offset = 0; |
bbabddbd UH |
106 | |
107 | /* Try to get as much data as the buffer can hold. */ | |
7dc55d93 | 108 | len = DMM_BUFSIZE - devc->buflen; |
d35afa87 | 109 | len = serial_read(devc->serial, devc->buf + devc->buflen, len); |
7dc55d93 | 110 | if (len < 1) { |
bbabddbd | 111 | sr_err("Serial port read error: %d.", len); |
7dc55d93 AG |
112 | return; |
113 | } | |
114 | devc->buflen += len; | |
115 | ||
bbabddbd | 116 | /* Now look for packets in that data. */ |
729b01f9 UH |
117 | while ((devc->buflen - offset) >= dmms[dmm].packet_size) { |
118 | if (dmms[dmm].packet_valid(devc->buf + offset)) { | |
119 | handle_packet(devc->buf + offset, devc, dmm, info); | |
120 | offset += dmms[dmm].packet_size; | |
7dc55d93 AG |
121 | } else { |
122 | offset++; | |
123 | } | |
124 | } | |
125 | ||
bbabddbd UH |
126 | /* If we have any data left, move it to the beginning of our buffer. */ |
127 | for (i = 0; i < devc->buflen - offset; i++) | |
7dc55d93 AG |
128 | devc->buf[i] = devc->buf[offset + i]; |
129 | devc->buflen -= offset; | |
130 | } | |
131 | ||
729b01f9 | 132 | static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data) |
7dc55d93 | 133 | { |
642e9d62 | 134 | struct sr_dev_inst *sdi; |
7dc55d93 | 135 | struct dev_context *devc; |
ce3777ad | 136 | int ret; |
7dc55d93 | 137 | |
d35afa87 BV |
138 | (void)fd; |
139 | ||
7dc55d93 AG |
140 | if (!(sdi = cb_data)) |
141 | return TRUE; | |
142 | ||
143 | if (!(devc = sdi->priv)) | |
144 | return TRUE; | |
145 | ||
bbabddbd | 146 | if (revents == G_IO_IN) { |
7dc55d93 | 147 | /* Serial data arrived. */ |
729b01f9 | 148 | handle_new_data(devc, dmm, info); |
ce3777ad UH |
149 | } else { |
150 | /* Timeout, send another packet request (if DMM needs it). */ | |
151 | if (dmms[dmm].packet_request) { | |
152 | ret = dmms[dmm].packet_request(devc->serial); | |
153 | if (ret < 0) { | |
154 | sr_err("Failed to request packet: %d.", ret); | |
155 | return FALSE; | |
156 | } | |
157 | } | |
7dc55d93 AG |
158 | } |
159 | ||
160 | if (devc->num_samples >= devc->limit_samples) { | |
6bef68a7 | 161 | sr_info("Requested number of samples reached, stopping."); |
7dc55d93 AG |
162 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
163 | return TRUE; | |
164 | } | |
165 | ||
166 | return TRUE; | |
167 | } | |
729b01f9 | 168 | |
f086b830 UH |
169 | SR_PRIV int digitek_dt4000zc_receive_data(int fd, int revents, void *cb_data) |
170 | { | |
171 | struct fs9721_info info; | |
f086b830 UH |
172 | return receive_data(fd, revents, DIGITEK_DT4000ZC, &info, cb_data); |
173 | } | |
174 | ||
729b01f9 UH |
175 | SR_PRIV int tekpower_tp4000zc_receive_data(int fd, int revents, void *cb_data) |
176 | { | |
177 | struct fs9721_info info; | |
729b01f9 UH |
178 | return receive_data(fd, revents, TEKPOWER_TP4000ZC, &info, cb_data); |
179 | } | |
ce3777ad UH |
180 | |
181 | SR_PRIV int metex_me31_receive_data(int fd, int revents, void *cb_data) | |
182 | { | |
183 | struct metex14_info info; | |
ce3777ad UH |
184 | return receive_data(fd, revents, METEX_ME31, &info, cb_data); |
185 | } | |
f0ac4929 UH |
186 | |
187 | SR_PRIV int peaktech_3410_receive_data(int fd, int revents, void *cb_data) | |
188 | { | |
189 | struct metex14_info info; | |
f0ac4929 UH |
190 | return receive_data(fd, revents, PEAKTECH_3410, &info, cb_data); |
191 | } | |
5887c9cc UH |
192 | |
193 | SR_PRIV int mastech_mas345_receive_data(int fd, int revents, void *cb_data) | |
194 | { | |
195 | struct metex14_info info; | |
5887c9cc UH |
196 | return receive_data(fd, revents, MASTECH_MAS345, &info, cb_data); |
197 | } | |
6dca2f16 UH |
198 | |
199 | SR_PRIV int va_va18b_receive_data(int fd, int revents, void *cb_data) | |
200 | { | |
201 | struct fs9721_info info; | |
6dca2f16 UH |
202 | return receive_data(fd, revents, VA_VA18B, &info, cb_data); |
203 | } | |
a53da082 UH |
204 | |
205 | SR_PRIV int metex_m3640d_receive_data(int fd, int revents, void *cb_data) | |
206 | { | |
207 | struct metex14_info info; | |
208 | return receive_data(fd, revents, METEX_M3640D, &info, cb_data); | |
209 | } | |
a376ffea UH |
210 | |
211 | SR_PRIV int peaktech_4370_receive_data(int fd, int revents, void *cb_data) | |
212 | { | |
213 | struct metex14_info info; | |
214 | return receive_data(fd, revents, PEAKTECH_4370, &info, cb_data); | |
215 | } |