X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fdemo%2Fapi.c;h=7d3e08872d07c21b38832845a138d5cf2bd3fe80;hb=f6ce25ec05e8707ee3783b111ea13779f237c3b3;hp=32ca88dd106d55da14ac7f5e03b58ddb90214e0c;hpb=31f69b096f8020d817ff26800231cb549f5ce11e;p=libsigrok.git

diff --git a/src/hardware/demo/api.c b/src/hardware/demo/api.c
index 32ca88dd..7d3e0887 100644
--- a/src/hardware/demo/api.c
+++ b/src/hardware/demo/api.c
@@ -143,6 +143,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 	devc->logic_pattern = DEFAULT_LOGIC_PATTERN;
 	devc->num_analog_channels = num_analog_channels;
 	devc->limit_frames = limit_frames;
+	devc->capture_ratio = 20;
+	devc->stl = NULL;
 
 	if (num_logic_channels > 0) {
 		/* Logic channels, all in one channel group. */
@@ -434,11 +436,33 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 	uint8_t mask;
 	GHashTableIter iter;
 	void *value;
+	struct sr_trigger *trigger;
 
 	devc = sdi->priv;
 	devc->sent_samples = 0;
 	devc->sent_frame_samples = 0;
 
+	/* Setup triggers */
+	if ((trigger = sr_session_trigger_get(sdi->session))) {
+		int pre_trigger_samples = 0;
+		if (devc->limit_samples > 0)
+			pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
+		devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
+		if (!devc->stl)
+			return SR_ERR_MALLOC;
+
+		/* Disable all analog channels since using them when there are logic
+		 * triggers set up would require having pre-trigger sample buffers
+		 * for analog sample data.
+		 */
+		for (l = sdi->channels; l; l = l->next) {
+			ch = l->data;
+			if (ch->type == SR_CHANNEL_ANALOG)
+				ch->enabled = FALSE;
+		}
+	}
+	devc->trigger_fired = FALSE;
+
 	/*
 	 * Determine the numbers of logic and analog channels that are
 	 * involved in the acquisition. Determine an offset and a mask to
@@ -514,6 +538,11 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 
 	std_session_send_df_end(sdi);
 
+	if (devc->stl) {
+		soft_trigger_logic_free(devc->stl);
+		devc->stl = NULL;
+	}
+
 	return SR_OK;
 }