+ int ret;
+ char buf[100];
+ char **tokens;
+
+ if ((ret = send_cmd(sdi, "read\n", (char *)&buf, sizeof(buf))) < 0) {
+ sr_err("Error sending voltage/current query: %d.", ret);
+ return SR_ERR;
+ }
+
+ /* Reply: "read <current> <voltage>". */
+ tokens = g_strsplit((const char *)&buf, " ", 3);
+ if (voltage)
+ *voltage = g_ascii_strtod(tokens[2], NULL) / 1000;
+ if (current)
+ *current = g_ascii_strtod(tokens[1], NULL) / 1000;
+ g_strfreev(tokens);
+
+ return SR_OK;
+}
+
+static int send_config_update_key(const struct sr_dev_inst *sdi,
+ uint32_t key, GVariant *var)
+{
+ struct sr_config *cfg;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_meta meta;
+ int ret;
+
+ cfg = sr_config_new(key, var);
+ if (!cfg)
+ return SR_ERR;
+
+ memset(&meta, 0, sizeof(meta));
+
+ packet.type = SR_DF_META;
+ packet.payload = &meta;
+
+ meta.config = g_slist_append(meta.config, cfg);
+
+ ret = sr_session_send(sdi, &packet);
+ sr_config_free(cfg);
+
+ return ret;
+}
+
+static void handle_packet(const struct sr_dev_inst *sdi)
+{
+ float voltage, current;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ struct dev_context *devc;
+ char **tokens;
+ GSList *l;
+
+ devc = sdi->priv;
+
+ if (g_str_has_prefix((const char *)devc->buf, "overtemp")) {
+ sr_warn("Overtemperature condition!");
+ devc->otp_active = TRUE;
+ send_config_update_key(sdi, SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE,
+ g_variant_new_boolean(TRUE));
+ return;
+ }
+
+ if (g_str_has_prefix((const char *)devc->buf, "undervolt")) {
+ sr_warn("Undervoltage condition!");
+ devc->uvc_active = TRUE;
+ send_config_update_key(sdi, SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE,
+ g_variant_new_boolean(TRUE));
+ return;
+ }
+
+ if (g_str_has_prefix((const char *)devc->buf, "err ")) {
+ sr_err("Device replied with an error: '%s'.", devc->buf);
+ return;
+ }
+
+ if (g_str_has_prefix((const char *)devc->buf, "set ")) {
+ tokens = g_strsplit((const char *)devc->buf, " ", 2);
+ current = g_ascii_strtod(tokens[1], NULL) / 1000;
+ g_strfreev(tokens);
+ send_config_update_key(sdi, SR_CONF_CURRENT_LIMIT,
+ g_variant_new_double(current));
+ return;
+ }
+
+ if (!g_str_has_prefix((const char *)devc->buf, "read ")) {
+ sr_dbg("Unknown packet: '%s'.", devc->buf);
+ return;
+ }
+
+ tokens = g_strsplit((const char *)devc->buf, " ", 3);
+ voltage = g_ascii_strtod(tokens[2], NULL) / 1000;
+ current = g_ascii_strtod(tokens[1], NULL) / 1000;
+ g_strfreev(tokens);
+
+ /* Begin frame. */
+ packet.type = SR_DF_FRAME_BEGIN;
+ packet.payload = NULL;
+ sr_session_send(sdi, &packet);
+
+ sr_analog_init(&analog, &encoding, &meaning, &spec, 4);
+
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.num_samples = 1;
+
+ /* Voltage */
+ l = g_slist_copy(sdi->channels);
+ l = g_slist_remove_link(l, g_slist_nth(l, 1));
+ meaning.channels = l;
+ meaning.mq = SR_MQ_VOLTAGE;
+ meaning.mqflags = SR_MQFLAG_DC;
+ meaning.unit = SR_UNIT_VOLT;
+ analog.data = &voltage;
+ sr_session_send(sdi, &packet);
+ g_slist_free(l);
+
+ /* Current */
+ l = g_slist_copy(sdi->channels);
+ l = g_slist_remove_link(l, g_slist_nth(l, 0));
+ meaning.channels = l;
+ meaning.mq = SR_MQ_CURRENT;
+ meaning.mqflags = SR_MQFLAG_DC;
+ meaning.unit = SR_UNIT_AMPERE;
+ analog.data = ¤t;
+ sr_session_send(sdi, &packet);
+ g_slist_free(l);
+
+ /* End frame. */
+ packet.type = SR_DF_FRAME_END;
+ packet.payload = NULL;
+ sr_session_send(sdi, &packet);
+
+ sr_sw_limits_update_samples_read(&devc->limits, 1);
+}
+
+static void handle_new_data(const struct sr_dev_inst *sdi)
+{
+ int len;
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
+
+ devc = sdi->priv;
+ serial = sdi->conn;
+
+ /* Try to get as much data as the buffer can hold. */
+ len = RELOADPRO_BUFSIZE - devc->buflen;
+ len = serial_read_nonblocking(serial, devc->buf + devc->buflen, len);
+ if (len == 0)
+ return; /* No new bytes, nothing to do. */
+ if (len < 0) {
+ sr_err("Serial port read error: %d.", len);
+ return;
+ }
+ devc->buflen += len;
+
+ if (g_str_has_suffix((const char *)devc->buf, "\n")) {
+ handle_packet(sdi);
+ memset(devc->buf, 0, RELOADPRO_BUFSIZE);
+ devc->buflen = 0;
+ }
+}
+
+SR_PRIV int reloadpro_receive_data(int fd, int revents, void *cb_data)
+{
+ struct sr_dev_inst *sdi;