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7dc55d93 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
7dc55d93 AG |
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 | ||
7dc55d93 AG |
21 | #include <stdlib.h> |
22 | #include <math.h> | |
23 | #include <string.h> | |
24 | #include <errno.h> | |
22f54192 | 25 | #include <glib.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 | ||
69e19dd7 | 38 | static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi, |
729b01f9 | 39 | int dmm, void *info) |
7dc55d93 | 40 | { |
8c1adf37 | 41 | float floatval; |
7dc55d93 | 42 | struct sr_datafeed_packet packet; |
7c8a9e1e | 43 | struct sr_datafeed_analog analog; |
69e19dd7 | 44 | struct dev_context *devc; |
7dc55d93 | 45 | |
6bef68a7 | 46 | log_dmm_packet(buf); |
69e19dd7 | 47 | devc = sdi->priv; |
6bef68a7 | 48 | |
7c8a9e1e | 49 | memset(&analog, 0, sizeof(struct sr_datafeed_analog)); |
bbabddbd | 50 | |
7c8a9e1e UH |
51 | analog.probes = sdi->probes; |
52 | analog.num_samples = 1; | |
53 | analog.mq = -1; | |
7dc55d93 | 54 | |
7c8a9e1e UH |
55 | dmms[dmm].packet_parse(buf, &floatval, &analog, info); |
56 | analog.data = &floatval; | |
be5c1d3b | 57 | |
22f54192 | 58 | /* If this DMM needs additional handling, call the resp. function. */ |
ce3777ad | 59 | if (dmms[dmm].dmm_details) |
7c8a9e1e | 60 | dmms[dmm].dmm_details(&analog, info); |
7dc55d93 | 61 | |
7c8a9e1e | 62 | if (analog.mq != -1) { |
7dc55d93 | 63 | /* Got a measurement. */ |
7dc55d93 | 64 | packet.type = SR_DF_ANALOG; |
7c8a9e1e | 65 | packet.payload = &analog; |
7dc55d93 AG |
66 | sr_session_send(devc->cb_data, &packet); |
67 | devc->num_samples++; | |
68 | } | |
7dc55d93 AG |
69 | } |
70 | ||
69e19dd7 | 71 | static void handle_new_data(struct sr_dev_inst *sdi, int dmm, void *info) |
7dc55d93 | 72 | { |
69e19dd7 | 73 | struct dev_context *devc; |
bbabddbd | 74 | int len, i, offset = 0; |
1e1bfcd0 | 75 | struct sr_serial_dev_inst *serial; |
bbabddbd | 76 | |
69e19dd7 | 77 | devc = sdi->priv; |
1e1bfcd0 | 78 | serial = sdi->conn; |
69e19dd7 | 79 | |
bbabddbd | 80 | /* Try to get as much data as the buffer can hold. */ |
7dc55d93 | 81 | len = DMM_BUFSIZE - devc->buflen; |
1e1bfcd0 | 82 | len = serial_read(serial, devc->buf + devc->buflen, len); |
7dc55d93 | 83 | if (len < 1) { |
bbabddbd | 84 | sr_err("Serial port read error: %d.", len); |
7dc55d93 AG |
85 | return; |
86 | } | |
87 | devc->buflen += len; | |
88 | ||
bbabddbd | 89 | /* Now look for packets in that data. */ |
729b01f9 UH |
90 | while ((devc->buflen - offset) >= dmms[dmm].packet_size) { |
91 | if (dmms[dmm].packet_valid(devc->buf + offset)) { | |
69e19dd7 | 92 | handle_packet(devc->buf + offset, sdi, dmm, info); |
729b01f9 | 93 | offset += dmms[dmm].packet_size; |
7dc55d93 AG |
94 | } else { |
95 | offset++; | |
96 | } | |
97 | } | |
98 | ||
bbabddbd UH |
99 | /* If we have any data left, move it to the beginning of our buffer. */ |
100 | for (i = 0; i < devc->buflen - offset; i++) | |
7dc55d93 AG |
101 | devc->buf[i] = devc->buf[offset + i]; |
102 | devc->buflen -= offset; | |
103 | } | |
104 | ||
729b01f9 | 105 | static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data) |
7dc55d93 | 106 | { |
642e9d62 | 107 | struct sr_dev_inst *sdi; |
7dc55d93 | 108 | struct dev_context *devc; |
1e1bfcd0 | 109 | struct sr_serial_dev_inst *serial; |
f9b9bd63 | 110 | int64_t time; |
ce3777ad | 111 | int ret; |
7dc55d93 | 112 | |
d35afa87 BV |
113 | (void)fd; |
114 | ||
7dc55d93 AG |
115 | if (!(sdi = cb_data)) |
116 | return TRUE; | |
117 | ||
118 | if (!(devc = sdi->priv)) | |
119 | return TRUE; | |
120 | ||
1e1bfcd0 UH |
121 | serial = sdi->conn; |
122 | ||
bbabddbd | 123 | if (revents == G_IO_IN) { |
7dc55d93 | 124 | /* Serial data arrived. */ |
69e19dd7 | 125 | handle_new_data(sdi, dmm, info); |
ce3777ad UH |
126 | } else { |
127 | /* Timeout, send another packet request (if DMM needs it). */ | |
128 | if (dmms[dmm].packet_request) { | |
1e1bfcd0 | 129 | ret = dmms[dmm].packet_request(serial); |
ce3777ad UH |
130 | if (ret < 0) { |
131 | sr_err("Failed to request packet: %d.", ret); | |
132 | return FALSE; | |
133 | } | |
134 | } | |
7dc55d93 AG |
135 | } |
136 | ||
d55c89f5 | 137 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) { |
35e199da | 138 | sr_info("Requested number of samples reached."); |
7dc55d93 AG |
139 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
140 | return TRUE; | |
141 | } | |
142 | ||
f9b9bd63 AG |
143 | if (devc->limit_msec) { |
144 | time = (g_get_monotonic_time() - devc->starttime) / 1000; | |
145 | if (time > (int64_t)devc->limit_msec) { | |
35e199da | 146 | sr_info("Requested time limit reached."); |
f9b9bd63 AG |
147 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
148 | return TRUE; | |
149 | } | |
150 | } | |
151 | ||
7dc55d93 AG |
152 | return TRUE; |
153 | } | |
729b01f9 | 154 | |
22f54192 | 155 | #define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \ |
dccfe015 UH |
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); } | |
159 | ||
160 | /* Driver-specific receive_data() wrappers */ | |
22f54192 UH |
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) | |
3864648b | 171 | RECEIVE_DATA(RADIOSHACK_22_805, metex14) |
22f54192 | 172 | RECEIVE_DATA(RADIOSHACK_22_812, rs9lcd) |
b38e08fb | 173 | RECEIVE_DATA(TECPEL_DMM_8061_SER, fs9721) |
5f2a4aff | 174 | RECEIVE_DATA(VOLTCRAFT_M3650D, metex14) |
14766619 | 175 | RECEIVE_DATA(VOLTCRAFT_VC820_SER, fs9721) |
6045b91a | 176 | RECEIVE_DATA(VOLTCRAFT_VC830_SER, fs9922) |
14766619 | 177 | RECEIVE_DATA(VOLTCRAFT_VC840_SER, fs9721) |
a7a163a7 FK |
178 | RECEIVE_DATA(UNI_T_UT60A_SER, fs9721) |
179 | RECEIVE_DATA(UNI_T_UT60E_SER, fs9721) | |
ae3a59de | 180 | RECEIVE_DATA(UNI_T_UT61D_SER, fs9922) |
986fde75 | 181 | RECEIVE_DATA(UNI_T_UT61E_SER, es51922) |