238 lines
7.1 KiB
C
238 lines
7.1 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2013 Aurelien Jacobs <aurel@gnuage.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "protocol.h"
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#define STX 0x02
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#define ETX 0x03
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#define EOT 0x04
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#define LF 0x0A
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#define CR 0x0D
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static gboolean teleinfo_control_check(char *label, char *data, char control)
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{
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int sum = 0;
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while (*label)
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sum += *label++;
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sum += ' ';
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while (*data)
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sum += *data++;
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return ((sum & 0x3F) + ' ') == control;
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}
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static gint teleinfo_channel_compare(gconstpointer a, gconstpointer b)
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{
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const struct sr_channel *ch = a;
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const char *name = b;
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return strcmp(ch->name, name);
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}
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static struct sr_channel *teleinfo_find_channel(struct sr_dev_inst *sdi,
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const char *name)
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{
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GSList *elem = g_slist_find_custom(sdi->channels, name,
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teleinfo_channel_compare);
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return elem ? elem->data : NULL;
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}
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static void teleinfo_send_value(struct sr_dev_inst *sdi, const char *channel_name,
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float value, int mq, int unit)
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{
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struct dev_context *devc;
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struct sr_datafeed_packet packet;
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struct sr_datafeed_analog analog;
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struct sr_channel *ch;
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devc = sdi->priv;
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ch = teleinfo_find_channel(sdi, channel_name);
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if (!ch || !ch->enabled)
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return;
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memset(&analog, 0, sizeof(struct sr_datafeed_analog));
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analog.channels = g_slist_append(analog.channels, ch);
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analog.num_samples = 1;
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analog.mq = mq;
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analog.unit = unit;
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analog.data = &value;
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packet.type = SR_DF_ANALOG;
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packet.payload = &analog;
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sr_session_send(devc->session_cb_data, &packet);
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g_slist_free(analog.channels);
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}
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static void teleinfo_handle_mesurement(struct sr_dev_inst *sdi,
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const char *label, const char *data,
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char *optarif)
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{
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struct dev_context *devc;
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int v = atoi(data);
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if (!sdi || !(devc = sdi->priv)) {
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if (optarif && !strcmp(label, "OPTARIF"))
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strcpy(optarif, data);
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return;
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}
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if (!strcmp(label, "ADCO")) {
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devc->num_samples++;
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} else if (!strcmp(label, "BASE")) {
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teleinfo_send_value(sdi, "BASE", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "HCHP")) {
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teleinfo_send_value(sdi, "HP" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "HCHC")) {
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teleinfo_send_value(sdi, "HC" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "EJPHN")) {
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teleinfo_send_value(sdi, "HN" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "EJPHPM")) {
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teleinfo_send_value(sdi, "HPM" , v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHPJB")) {
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teleinfo_send_value(sdi, "HPJB", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHPJW")) {
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teleinfo_send_value(sdi, "HPJW", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHPJR")) {
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teleinfo_send_value(sdi, "HPJR", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHCJB")) {
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teleinfo_send_value(sdi, "HCJB", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHCJW")) {
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teleinfo_send_value(sdi, "HCJW", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "BBRHCJR")) {
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teleinfo_send_value(sdi, "HCJR", v, SR_MQ_POWER, SR_UNIT_WATT_HOUR);
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} else if (!strcmp(label, "IINST")) {
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teleinfo_send_value(sdi, "IINST", v, SR_MQ_CURRENT, SR_UNIT_AMPERE);
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} else if (!strcmp(label, "PAPP")) {
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teleinfo_send_value(sdi, "PAPP", v, SR_MQ_POWER, SR_UNIT_VOLT_AMPERE);
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}
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}
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static gboolean teleinfo_parse_group(struct sr_dev_inst *sdi,
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const uint8_t *group, char *optarif)
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{
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char label[9], data[13], control, cr;
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const char *str = (const char *)group;
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if (sscanf(str, "\x0A%8s %13s %c%c", label, data, &control, &cr) != 4
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|| cr != CR)
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return FALSE;
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if (!teleinfo_control_check(label, data, control))
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return FALSE;
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teleinfo_handle_mesurement(sdi, label, data, optarif);
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return TRUE;
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}
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static const uint8_t *teleinfo_parse_data(struct sr_dev_inst *sdi,
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const uint8_t *buf, int len,
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char *optarif)
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{
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const uint8_t *group_start, *group_end;
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group_start = memchr(buf, LF, len);
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if (!group_start)
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return NULL;
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group_end = memchr(group_start, CR, len - (group_start - buf));
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if (!group_end)
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return NULL;
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teleinfo_parse_group(sdi, group_start, optarif);
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return group_end + 1;
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}
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SR_PRIV int teleinfo_get_optarif(const uint8_t *buf)
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{
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const uint8_t *ptr = buf;
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char optarif[5] = { 0 };
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while ((ptr = teleinfo_parse_data(NULL, ptr, 292-(ptr-buf), optarif)));
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if (!strcmp(optarif, "BASE"))
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return OPTARIF_BASE;
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else if (!strcmp(optarif, "HC.."))
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return OPTARIF_HC;
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else if (!strcmp(optarif, "EJP."))
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return OPTARIF_EJP;
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else if (!strncmp(optarif, "BBR", 3))
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return OPTARIF_BBR;
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return OPTARIF_NONE;
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}
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SR_PRIV gboolean teleinfo_packet_valid(const uint8_t *buf)
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{
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return !!teleinfo_get_optarif(buf);
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}
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SR_PRIV int teleinfo_receive_data(int fd, int revents, void *cb_data)
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{
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struct sr_dev_inst *sdi;
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struct dev_context *devc;
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struct sr_serial_dev_inst *serial;
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const uint8_t *ptr, *next_ptr, *end_ptr;
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int len;
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int64_t time;
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(void)fd;
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if (!(sdi = cb_data) || !(devc = sdi->priv) || revents != G_IO_IN)
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return TRUE;
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serial = sdi->conn;
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/* Try to get as much data as the buffer can hold. */
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len = TELEINFO_BUF_SIZE - devc->buf_len;
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len = serial_read(serial, devc->buf + devc->buf_len, len);
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if (len < 1) {
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sr_err("Serial port read error: %d.", len);
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return FALSE;
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}
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devc->buf_len += len;
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/* Now look for packets in that data. */
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ptr = devc->buf;
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end_ptr = ptr + devc->buf_len;
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while ((next_ptr = teleinfo_parse_data(sdi, ptr, end_ptr - ptr, NULL)))
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ptr = next_ptr;
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/* If we have any data left, move it to the beginning of our buffer. */
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memmove(devc->buf, ptr, end_ptr - ptr);
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devc->buf_len -= ptr - devc->buf;
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/* If buffer is full and no valid packet was found, wipe buffer. */
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if (devc->buf_len >= TELEINFO_BUF_SIZE) {
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devc->buf_len = 0;
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return FALSE;
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}
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if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
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sr_info("Requested number of samples reached.");
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sdi->driver->dev_acquisition_stop(sdi, devc->session_cb_data);
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return TRUE;
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}
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if (devc->limit_msec) {
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time = (g_get_monotonic_time() - devc->start_time) / 1000;
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if (time > (int64_t)devc->limit_msec) {
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sr_info("Requested time limit reached.");
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sdi->driver->dev_acquisition_stop(sdi, devc->session_cb_data);
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return TRUE;
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}
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}
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return TRUE;
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}
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