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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Aurelien Jacobs <aurel@gnuage.org> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <glib.h> | |
24 | #include "protocol.h" | |
25 | ||
26 | #define STX 0x02 | |
27 | #define ETX 0x03 | |
28 | #define EOT 0x04 | |
29 | #define LF 0x0A | |
30 | #define CR 0x0D | |
31 | ||
32 | static gboolean teleinfo_control_check(char *label, char *data, char control) | |
33 | { | |
34 | int sum = 0; | |
35 | while (*label) | |
36 | sum += *label++; | |
37 | sum += ' '; | |
38 | while (*data) | |
39 | sum += *data++; | |
40 | return ((sum & 0x3F) + ' ') == control; | |
41 | } | |
42 | ||
43 | static gint teleinfo_channel_compare(gconstpointer a, gconstpointer b) | |
44 | { | |
45 | const struct sr_channel *ch = a; | |
46 | const char *name = b; | |
47 | return strcmp(ch->name, name); | |
48 | } | |
49 | ||
50 | static struct sr_channel *teleinfo_find_channel(struct sr_dev_inst *sdi, | |
51 | const char *name) | |
52 | { | |
53 | GSList *elem = g_slist_find_custom(sdi->channels, name, | |
54 | teleinfo_channel_compare); | |
55 | return elem ? elem->data : NULL; | |
56 | } | |
57 | ||
58 | static void teleinfo_send_value(struct sr_dev_inst *sdi, const char *channel_name, | |
59 | float value, enum sr_mq mq, enum sr_unit unit) | |
60 | { | |
61 | struct sr_datafeed_packet packet; | |
62 | struct sr_datafeed_analog analog; | |
63 | struct sr_analog_encoding encoding; | |
64 | struct sr_analog_meaning meaning; | |
65 | struct sr_analog_spec spec; | |
66 | struct sr_channel *ch; | |
67 | ||
68 | ch = teleinfo_find_channel(sdi, channel_name); | |
69 | ||
70 | if (!ch || !ch->enabled) | |
71 | return; | |
72 | ||
73 | /* Note: digits/spec_digits is actually really 0 for this device! */ | |
74 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
75 | analog.meaning->channels = g_slist_append(analog.meaning->channels, ch); | |
76 | analog.num_samples = 1; | |
77 | analog.meaning->mq = mq; | |
78 | analog.meaning->unit = unit; | |
79 | analog.data = &value; | |
80 | ||
81 | packet.type = SR_DF_ANALOG; | |
82 | packet.payload = &analog; | |
83 | sr_session_send(sdi, &packet); | |
84 | g_slist_free(analog.meaning->channels); | |
85 | } | |
86 | ||
87 | static void teleinfo_handle_measurement(struct sr_dev_inst *sdi, | |
88 | const char *label, const char *data, char *optarif) | |
89 | { | |
90 | struct dev_context *devc; | |
91 | int v = atoi(data); | |
92 | ||
93 | if (!sdi || !(devc = sdi->priv)) { | |
94 | if (optarif && !strcmp(label, "OPTARIF")) | |
95 | strcpy(optarif, data); | |
96 | return; | |
97 | } | |
98 | ||
99 | if (!strcmp(label, "ADCO")) { | |
100 | sr_sw_limits_update_samples_read(&devc->sw_limits, 1); | |
101 | } else if (!strcmp(label, "BASE")) { | |
102 | teleinfo_send_value(sdi, "BASE", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
103 | } else if (!strcmp(label, "HCHP")) { | |
104 | teleinfo_send_value(sdi, "HP" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
105 | } else if (!strcmp(label, "HCHC")) { | |
106 | teleinfo_send_value(sdi, "HC" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
107 | } else if (!strcmp(label, "EJPHN")) { | |
108 | teleinfo_send_value(sdi, "HN" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
109 | } else if (!strcmp(label, "EJPHPM")) { | |
110 | teleinfo_send_value(sdi, "HPM" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
111 | } else if (!strcmp(label, "BBRHPJB")) { | |
112 | teleinfo_send_value(sdi, "HPJB", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
113 | } else if (!strcmp(label, "BBRHPJW")) { | |
114 | teleinfo_send_value(sdi, "HPJW", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
115 | } else if (!strcmp(label, "BBRHPJR")) { | |
116 | teleinfo_send_value(sdi, "HPJR", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
117 | } else if (!strcmp(label, "BBRHCJB")) { | |
118 | teleinfo_send_value(sdi, "HCJB", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
119 | } else if (!strcmp(label, "BBRHCJW")) { | |
120 | teleinfo_send_value(sdi, "HCJW", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
121 | } else if (!strcmp(label, "BBRHCJR")) { | |
122 | teleinfo_send_value(sdi, "HCJR", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR); | |
123 | } else if (!strcmp(label, "IINST")) { | |
124 | teleinfo_send_value(sdi, "IINST", v, SR_MQ_CURRENT, SR_UNIT_AMPERE); | |
125 | } else if (!strcmp(label, "PAPP")) { | |
126 | teleinfo_send_value(sdi, "PAPP", v, SR_MQ_POWER, SR_UNIT_VOLT_AMPERE); | |
127 | } | |
128 | } | |
129 | ||
130 | static gboolean teleinfo_parse_group(struct sr_dev_inst *sdi, | |
131 | const uint8_t *group, char *optarif) | |
132 | { | |
133 | char label[9], data[13], control, cr; | |
134 | const char *str = (const char *)group; | |
135 | if (sscanf(str, "\x0A%8s %13s %c%c", label, data, &control, &cr) != 4 | |
136 | || cr != CR) | |
137 | return FALSE; | |
138 | if (!teleinfo_control_check(label, data, control)) | |
139 | return FALSE; | |
140 | teleinfo_handle_measurement(sdi, label, data, optarif); | |
141 | return TRUE; | |
142 | } | |
143 | ||
144 | static const uint8_t *teleinfo_parse_data(struct sr_dev_inst *sdi, | |
145 | const uint8_t *buf, int len, | |
146 | char *optarif) | |
147 | { | |
148 | const uint8_t *group_start, *group_end; | |
149 | ||
150 | group_start = memchr(buf, LF, len); | |
151 | if (!group_start) | |
152 | return NULL; | |
153 | ||
154 | group_end = memchr(group_start, CR, len - (group_start - buf)); | |
155 | if (!group_end) | |
156 | return NULL; | |
157 | ||
158 | teleinfo_parse_group(sdi, group_start, optarif); | |
159 | return group_end + 1; | |
160 | } | |
161 | ||
162 | SR_PRIV int teleinfo_get_optarif(const uint8_t *buf) | |
163 | { | |
164 | const uint8_t *ptr = buf; | |
165 | char optarif[5] = { 0 }; | |
166 | ||
167 | while ((ptr = teleinfo_parse_data(NULL, ptr, 292-(ptr-buf), optarif))); | |
168 | if (!strcmp(optarif, "BASE")) | |
169 | return OPTARIF_BASE; | |
170 | else if (!strcmp(optarif, "HC..")) | |
171 | return OPTARIF_HC; | |
172 | else if (!strcmp(optarif, "EJP.")) | |
173 | return OPTARIF_EJP; | |
174 | else if (!strncmp(optarif, "BBR", 3)) | |
175 | return OPTARIF_BBR; | |
176 | return OPTARIF_NONE; | |
177 | } | |
178 | ||
179 | SR_PRIV gboolean teleinfo_packet_valid(const uint8_t *buf) | |
180 | { | |
181 | return !!teleinfo_get_optarif(buf); | |
182 | } | |
183 | ||
184 | SR_PRIV int teleinfo_receive_data(int fd, int revents, void *cb_data) | |
185 | { | |
186 | struct sr_dev_inst *sdi; | |
187 | struct dev_context *devc; | |
188 | struct sr_serial_dev_inst *serial; | |
189 | const uint8_t *ptr, *next_ptr, *end_ptr; | |
190 | int len; | |
191 | ||
192 | (void)fd; | |
193 | ||
194 | if (!(sdi = cb_data) || !(devc = sdi->priv) || revents != G_IO_IN) | |
195 | return TRUE; | |
196 | serial = sdi->conn; | |
197 | ||
198 | /* Try to get as much data as the buffer can hold. */ | |
199 | len = TELEINFO_BUF_SIZE - devc->buf_len; | |
200 | len = serial_read_nonblocking(serial, devc->buf + devc->buf_len, len); | |
201 | if (len < 1) { | |
202 | sr_err("Serial port read error: %d.", len); | |
203 | return FALSE; | |
204 | } | |
205 | devc->buf_len += len; | |
206 | ||
207 | /* Now look for packets in that data. */ | |
208 | ptr = devc->buf; | |
209 | end_ptr = ptr + devc->buf_len; | |
210 | while ((next_ptr = teleinfo_parse_data(sdi, ptr, end_ptr - ptr, NULL))) | |
211 | ptr = next_ptr; | |
212 | ||
213 | /* If we have any data left, move it to the beginning of our buffer. */ | |
214 | memmove(devc->buf, ptr, end_ptr - ptr); | |
215 | devc->buf_len -= ptr - devc->buf; | |
216 | ||
217 | /* If buffer is full and no valid packet was found, wipe buffer. */ | |
218 | if (devc->buf_len >= TELEINFO_BUF_SIZE) { | |
219 | devc->buf_len = 0; | |
220 | return FALSE; | |
221 | } | |
222 | ||
223 | if (sr_sw_limits_check(&devc->sw_limits)) | |
224 | sdi->driver->dev_acquisition_stop(sdi); | |
225 | ||
226 | return TRUE; | |
227 | } |