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