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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 | ||
729b01f9 UH |
38 | SR_PRIV void dmm_details_tp4000zc(struct sr_datafeed_analog *analog, void *info) |
39 | { | |
40 | struct fs9721_info *info_local; | |
41 | ||
42 | info_local = (struct fs9721_info *)info; | |
43 | ||
44 | /* User-defined FS9721_LP3 flag 'c2c1_10' means temperature. */ | |
45 | if (info_local->is_c2c1_10) { | |
46 | analog->mq = SR_MQ_TEMPERATURE; | |
47 | /* No Kelvin or Fahrenheit from the device, just Celsius. */ | |
48 | analog->unit = SR_UNIT_CELSIUS; | |
49 | } | |
50 | } | |
51 | ||
52 | static void handle_packet(const uint8_t *buf, struct dev_context *devc, | |
53 | int dmm, void *info) | |
7dc55d93 | 54 | { |
8c1adf37 | 55 | float floatval; |
7dc55d93 AG |
56 | struct sr_datafeed_packet packet; |
57 | struct sr_datafeed_analog *analog; | |
58 | ||
6bef68a7 UH |
59 | log_dmm_packet(buf); |
60 | ||
bbabddbd | 61 | if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog)))) { |
8c1adf37 | 62 | sr_err("Analog packet malloc failed."); |
7dc55d93 AG |
63 | return; |
64 | } | |
bbabddbd | 65 | |
bbabddbd | 66 | analog->num_samples = 1; |
7dc55d93 AG |
67 | analog->mq = -1; |
68 | ||
729b01f9 | 69 | dmms[dmm].packet_parse(buf, &floatval, analog, info); |
d84fc9cb | 70 | analog->data = &floatval; |
be5c1d3b | 71 | |
729b01f9 | 72 | dmms[dmm].dmm_details(analog, info); |
7dc55d93 | 73 | |
7dc55d93 AG |
74 | if (analog->mq != -1) { |
75 | /* Got a measurement. */ | |
7dc55d93 AG |
76 | packet.type = SR_DF_ANALOG; |
77 | packet.payload = analog; | |
78 | sr_session_send(devc->cb_data, &packet); | |
79 | devc->num_samples++; | |
80 | } | |
bbabddbd | 81 | |
7dc55d93 AG |
82 | g_free(analog); |
83 | } | |
84 | ||
729b01f9 | 85 | static void handle_new_data(struct dev_context *devc, int dmm, void *info) |
7dc55d93 | 86 | { |
bbabddbd | 87 | int len, i, offset = 0; |
bbabddbd UH |
88 | |
89 | /* Try to get as much data as the buffer can hold. */ | |
7dc55d93 | 90 | len = DMM_BUFSIZE - devc->buflen; |
d35afa87 | 91 | len = serial_read(devc->serial, devc->buf + devc->buflen, len); |
7dc55d93 | 92 | if (len < 1) { |
bbabddbd | 93 | sr_err("Serial port read error: %d.", len); |
7dc55d93 AG |
94 | return; |
95 | } | |
96 | devc->buflen += len; | |
97 | ||
bbabddbd | 98 | /* Now look for packets in that data. */ |
729b01f9 UH |
99 | while ((devc->buflen - offset) >= dmms[dmm].packet_size) { |
100 | if (dmms[dmm].packet_valid(devc->buf + offset)) { | |
101 | handle_packet(devc->buf + offset, devc, dmm, info); | |
102 | offset += dmms[dmm].packet_size; | |
7dc55d93 AG |
103 | } else { |
104 | offset++; | |
105 | } | |
106 | } | |
107 | ||
bbabddbd UH |
108 | /* If we have any data left, move it to the beginning of our buffer. */ |
109 | for (i = 0; i < devc->buflen - offset; i++) | |
7dc55d93 AG |
110 | devc->buf[i] = devc->buf[offset + i]; |
111 | devc->buflen -= offset; | |
112 | } | |
113 | ||
729b01f9 | 114 | static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data) |
7dc55d93 | 115 | { |
642e9d62 | 116 | struct sr_dev_inst *sdi; |
7dc55d93 AG |
117 | struct dev_context *devc; |
118 | ||
d35afa87 BV |
119 | (void)fd; |
120 | ||
7dc55d93 AG |
121 | if (!(sdi = cb_data)) |
122 | return TRUE; | |
123 | ||
124 | if (!(devc = sdi->priv)) | |
125 | return TRUE; | |
126 | ||
bbabddbd | 127 | if (revents == G_IO_IN) { |
7dc55d93 | 128 | /* Serial data arrived. */ |
729b01f9 | 129 | handle_new_data(devc, dmm, info); |
7dc55d93 AG |
130 | } |
131 | ||
132 | if (devc->num_samples >= devc->limit_samples) { | |
6bef68a7 | 133 | sr_info("Requested number of samples reached, stopping."); |
7dc55d93 AG |
134 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
135 | return TRUE; | |
136 | } | |
137 | ||
138 | return TRUE; | |
139 | } | |
729b01f9 UH |
140 | |
141 | SR_PRIV int tekpower_tp4000zc_receive_data(int fd, int revents, void *cb_data) | |
142 | { | |
143 | struct fs9721_info info; | |
144 | ||
145 | return receive_data(fd, revents, TEKPOWER_TP4000ZC, &info, cb_data); | |
146 | } |