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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 | |
ba7dd8bb | 51 | analog.channels = sdi->channels; |
7c8a9e1e UH |
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 | ||
2baac44d MH |
71 | /** Request packet, if required. */ |
72 | SR_PRIV int req_packet(struct sr_dev_inst *sdi, int dmm) | |
73 | { | |
74 | struct dev_context *devc; | |
75 | struct sr_serial_dev_inst *serial; | |
76 | int ret; | |
77 | ||
78 | if (!dmms[dmm].packet_request) | |
79 | return SR_OK; | |
80 | ||
81 | devc = sdi->priv; | |
82 | serial = sdi->conn; | |
83 | ||
84 | if (devc->req_next_at && (devc->req_next_at > g_get_monotonic_time())) { | |
85 | sr_spew("Not requesting new packet yet, %" PRIi64 " ms left.", | |
86 | ((devc->req_next_at - g_get_monotonic_time()) / 1000)); | |
87 | return SR_OK; | |
88 | } | |
89 | ||
90 | ret = dmms[dmm].packet_request(serial); | |
91 | if (ret < 0) { | |
92 | sr_err("Failed to request packet: %d.", ret); | |
93 | return ret; | |
94 | } | |
95 | ||
96 | if (dmms[dmm].req_timeout_ms) | |
97 | devc->req_next_at = g_get_monotonic_time() + (dmms[dmm].req_timeout_ms * 1000); | |
98 | ||
99 | return SR_OK; | |
100 | } | |
101 | ||
69e19dd7 | 102 | static void handle_new_data(struct sr_dev_inst *sdi, int dmm, void *info) |
7dc55d93 | 103 | { |
69e19dd7 | 104 | struct dev_context *devc; |
bbabddbd | 105 | int len, i, offset = 0; |
1e1bfcd0 | 106 | struct sr_serial_dev_inst *serial; |
bbabddbd | 107 | |
69e19dd7 | 108 | devc = sdi->priv; |
1e1bfcd0 | 109 | serial = sdi->conn; |
69e19dd7 | 110 | |
bbabddbd | 111 | /* Try to get as much data as the buffer can hold. */ |
7dc55d93 | 112 | len = DMM_BUFSIZE - devc->buflen; |
1e1bfcd0 | 113 | len = serial_read(serial, devc->buf + devc->buflen, len); |
66a43576 UH |
114 | if (len == 0) |
115 | return; /* No new bytes, nothing to do. */ | |
116 | if (len < 0) { | |
bbabddbd | 117 | sr_err("Serial port read error: %d.", len); |
7dc55d93 AG |
118 | return; |
119 | } | |
120 | devc->buflen += len; | |
121 | ||
bbabddbd | 122 | /* Now look for packets in that data. */ |
729b01f9 UH |
123 | while ((devc->buflen - offset) >= dmms[dmm].packet_size) { |
124 | if (dmms[dmm].packet_valid(devc->buf + offset)) { | |
69e19dd7 | 125 | handle_packet(devc->buf + offset, sdi, dmm, info); |
729b01f9 | 126 | offset += dmms[dmm].packet_size; |
2baac44d MH |
127 | |
128 | /* Request next packet, if required. */ | |
129 | if (!dmms[dmm].packet_request) | |
130 | break; | |
131 | if (dmms[dmm].req_timeout_ms || dmms[dmm].req_delay_ms) | |
132 | devc->req_next_at = g_get_monotonic_time() + | |
133 | dmms[dmm].req_delay_ms * 1000; | |
134 | req_packet(sdi, dmm); | |
7dc55d93 AG |
135 | } else { |
136 | offset++; | |
137 | } | |
138 | } | |
139 | ||
bbabddbd UH |
140 | /* If we have any data left, move it to the beginning of our buffer. */ |
141 | for (i = 0; i < devc->buflen - offset; i++) | |
7dc55d93 AG |
142 | devc->buf[i] = devc->buf[offset + i]; |
143 | devc->buflen -= offset; | |
144 | } | |
145 | ||
729b01f9 | 146 | static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data) |
7dc55d93 | 147 | { |
642e9d62 | 148 | struct sr_dev_inst *sdi; |
7dc55d93 | 149 | struct dev_context *devc; |
f9b9bd63 | 150 | int64_t time; |
7dc55d93 | 151 | |
d35afa87 BV |
152 | (void)fd; |
153 | ||
7dc55d93 AG |
154 | if (!(sdi = cb_data)) |
155 | return TRUE; | |
156 | ||
157 | if (!(devc = sdi->priv)) | |
158 | return TRUE; | |
159 | ||
bbabddbd | 160 | if (revents == G_IO_IN) { |
7dc55d93 | 161 | /* Serial data arrived. */ |
69e19dd7 | 162 | handle_new_data(sdi, dmm, info); |
ce3777ad | 163 | } else { |
2baac44d MH |
164 | /* Timeout; send another packet request if DMM needs it. */ |
165 | if (dmms[dmm].packet_request && (req_packet(sdi, dmm) < 0)) | |
166 | return FALSE; | |
7dc55d93 AG |
167 | } |
168 | ||
d55c89f5 | 169 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) { |
35e199da | 170 | sr_info("Requested number of samples reached."); |
7dc55d93 AG |
171 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
172 | return TRUE; | |
173 | } | |
174 | ||
f9b9bd63 AG |
175 | if (devc->limit_msec) { |
176 | time = (g_get_monotonic_time() - devc->starttime) / 1000; | |
177 | if (time > (int64_t)devc->limit_msec) { | |
35e199da | 178 | sr_info("Requested time limit reached."); |
f9b9bd63 AG |
179 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
180 | return TRUE; | |
181 | } | |
182 | } | |
183 | ||
7dc55d93 AG |
184 | return TRUE; |
185 | } | |
729b01f9 | 186 | |
22f54192 | 187 | #define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \ |
dccfe015 UH |
188 | SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \ |
189 | struct DMM_DRIVER##_info info; \ | |
190 | return receive_data(fd, revents, ID_UPPER, &info, cb_data); } | |
191 | ||
192 | /* Driver-specific receive_data() wrappers */ | |
825da8b2 | 193 | RECEIVE_DATA(BBCGM_M2110, metex14) /* metex14_info used as a dummy. */ |
22f54192 UH |
194 | RECEIVE_DATA(DIGITEK_DT4000ZC, fs9721) |
195 | RECEIVE_DATA(TEKPOWER_TP4000ZC, fs9721) | |
196 | RECEIVE_DATA(METEX_ME31, metex14) | |
197 | RECEIVE_DATA(PEAKTECH_3410, metex14) | |
198 | RECEIVE_DATA(MASTECH_MAS345, metex14) | |
199 | RECEIVE_DATA(VA_VA18B, fs9721) | |
d327972b | 200 | RECEIVE_DATA(VA_VA40B, fs9721) |
22f54192 | 201 | RECEIVE_DATA(METEX_M3640D, metex14) |
88f544f2 | 202 | RECEIVE_DATA(METEX_M4650CR, metex14) |
22f54192 UH |
203 | RECEIVE_DATA(PEAKTECH_4370, metex14) |
204 | RECEIVE_DATA(PCE_PCE_DM32, fs9721) | |
205 | RECEIVE_DATA(RADIOSHACK_22_168, metex14) | |
3864648b | 206 | RECEIVE_DATA(RADIOSHACK_22_805, metex14) |
22f54192 | 207 | RECEIVE_DATA(RADIOSHACK_22_812, rs9lcd) |
b38e08fb | 208 | RECEIVE_DATA(TECPEL_DMM_8061_SER, fs9721) |
e83437ae | 209 | RECEIVE_DATA(VOLTCRAFT_M3650CR, metex14) |
5f2a4aff | 210 | RECEIVE_DATA(VOLTCRAFT_M3650D, metex14) |
2b83d7fe | 211 | RECEIVE_DATA(VOLTCRAFT_M4650CR, metex14) |
1656e47d | 212 | RECEIVE_DATA(VOLTCRAFT_ME42, metex14) |
14766619 | 213 | RECEIVE_DATA(VOLTCRAFT_VC820_SER, fs9721) |
6045b91a | 214 | RECEIVE_DATA(VOLTCRAFT_VC830_SER, fs9922) |
14766619 | 215 | RECEIVE_DATA(VOLTCRAFT_VC840_SER, fs9721) |
a7a163a7 FK |
216 | RECEIVE_DATA(UNI_T_UT60A_SER, fs9721) |
217 | RECEIVE_DATA(UNI_T_UT60E_SER, fs9721) | |
4104ef81 | 218 | RECEIVE_DATA(UNI_T_UT60G_SER, es519xx) |
7cb69b18 | 219 | RECEIVE_DATA(UNI_T_UT61B_SER, fs9922) |
5f985df2 | 220 | RECEIVE_DATA(UNI_T_UT61C_SER, fs9922) |
ae3a59de | 221 | RECEIVE_DATA(UNI_T_UT61D_SER, fs9922) |
d97824e5 | 222 | RECEIVE_DATA(UNI_T_UT61E_SER, es519xx) |
df6b0f99 | 223 | RECEIVE_DATA(ISO_TECH_IDM103N, es519xx) |
2710cb53 | 224 | RECEIVE_DATA(TENMA_72_7745_SER, fs9721) |
d9e79c51 | 225 | RECEIVE_DATA(TENMA_72_7750_SER, es519xx) |
a24c3f4a | 226 | RECEIVE_DATA(BRYMEN_BM25X_SER, bm25x) |