- pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
- for (i = 0; pfd[i]; i++) {
- /* Handle USB events every 10ms. */
- sr_source_add(pfd[i]->fd, pfd[i]->events, 10,
- kecheng_kc_330b_handle_events, (void *)sdi);
- /* We'll need to remove this fd later. */
- devc->usbfd[i] = pfd[i]->fd;
+ if (devc->data_source == DATA_SOURCE_LIVE) {
+ /* Force configuration. */
+ kecheng_kc_330b_configure(sdi);
+
+ if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK)
+ return SR_ERR;
+ if (ret != DEVICE_ACTIVE) {
+ sr_err("Device is inactive");
+ /* Still continue though, since the device will
+ * just return 30.0 until the user hits the button
+ * on the device -- and then start feeding good
+ * samples back. */
+ }
+ } else {
+ if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK)
+ return SR_ERR;
+ stored_mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F;
+ stored_mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A;
+ devc->stored_samples = (buf[7] << 8) | buf[8];
+ if (devc->stored_samples == 0) {
+ /* Notify frontend of empty log by sending start/end packets. */
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+ return SR_OK;
+ }
+
+ if (devc->limit_samples && devc->limit_samples < devc->stored_samples)
+ devc->stored_samples = devc->limit_samples;
+
+ si = kecheng_kc_330b_sample_intervals[buf[1]];
+ rational[0] = g_variant_new_uint64(si[0]);
+ rational[1] = g_variant_new_uint64(si[1]);
+ gvar = g_variant_new_tuple(rational, 2);
+ src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar);
+ packet.type = SR_DF_META;
+ packet.payload = &meta;
+ meta.config = g_slist_append(NULL, src);
+ sr_session_send(devc->cb_data, &packet);
+ g_free(src);