diff --git a/src/hardware/pipistrello-ols/api.c b/src/hardware/pipistrello-ols/api.c
index 84965570..5423a320 100644
--- a/src/hardware/pipistrello-ols/api.c
+++ b/src/hardware/pipistrello-ols/api.c
@@ -501,6 +501,14 @@ static int set_trigger(const struct sr_dev_inst *sdi, int stage)
 	if (write_longcommand(devc, cmd, arg) != SR_OK)
 		return SR_ERR;
 
+	cmd = CMD_SET_TRIGGER_EDGE + stage * 4;
+	arg[0] = devc->trigger_edge[stage] & 0xff;
+	arg[1] = (devc->trigger_edge[stage] >> 8) & 0xff;
+	arg[2] = (devc->trigger_edge[stage] >> 16) & 0xff;
+	arg[3] = (devc->trigger_edge[stage] >> 24) & 0xff;
+	if (write_longcommand(devc, cmd, arg) != SR_OK)
+		return SR_ERR;
+
 	return SR_OK;
 }
 
@@ -583,13 +591,13 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 	arg[1] = ((readcount - 1) & 0xff00) >> 8;
 	arg[2] = ((readcount - 1) & 0xff0000) >> 16;
 	arg[3] = ((readcount - 1) & 0xff000000) >> 24;
-	if (write_longcommand(devc, CMD_CAPTURE_COUNT, arg) != SR_OK)
+	if (write_longcommand(devc, CMD_CAPTURE_DELAY, arg) != SR_OK)
 		return SR_ERR;
 	arg[0] = ((delaycount - 1) & 0xff);
 	arg[1] = ((delaycount - 1) & 0xff00) >> 8;
 	arg[2] = ((delaycount - 1) & 0xff0000) >> 16;
 	arg[3] = ((delaycount - 1) & 0xff000000) >> 24;
-	if (write_longcommand(devc, CMD_CAPTURE_DELAY, arg) != SR_OK)
+	if (write_longcommand(devc, CMD_CAPTURE_COUNT, arg) != SR_OK)
 		return SR_ERR;
 	/* Flag register. */
 	sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
diff --git a/src/hardware/pipistrello-ols/protocol.c b/src/hardware/pipistrello-ols/protocol.c
index 5e8d721f..bef76fba 100644
--- a/src/hardware/pipistrello-ols/protocol.c
+++ b/src/hardware/pipistrello-ols/protocol.c
@@ -167,6 +167,7 @@ SR_PRIV int p_ols_configure_channels(const struct sr_dev_inst *sdi)
 	for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 		devc->trigger_mask[i] = 0;
 		devc->trigger_value[i] = 0;
+		devc->trigger_edge[i] = 0;
 	}
 
 	devc->num_stages = 0;
@@ -194,8 +195,10 @@ SR_PRIV int p_ols_configure_channels(const struct sr_dev_inst *sdi)
 		stage = 0;
 		for (tc = ch->trigger; tc && *tc; tc++) {
 			devc->trigger_mask[stage] |= channel_bit;
-			if (*tc == '1')
+			if ((*tc == '1') || (*tc == 'r'))
 				devc->trigger_value[stage] |= channel_bit;
+			if ((*tc == 'r') || (*tc == 'f'))
+				devc->trigger_edge[stage] |= channel_bit;
 			stage++;
 			/* Only supporting parallel mode, with up to 4 stages. */
 			if (stage > 3)
diff --git a/src/hardware/pipistrello-ols/protocol.h b/src/hardware/pipistrello-ols/protocol.h
index e62d8ab2..819755ed 100644
--- a/src/hardware/pipistrello-ols/protocol.h
+++ b/src/hardware/pipistrello-ols/protocol.h
@@ -39,7 +39,7 @@
 
 #define NUM_CHANNELS           32
 #define NUM_TRIGGER_STAGES     4
-#define TRIGGER_TYPE           "01"
+#define TRIGGER_TYPE           "01rf"
 #define CLOCK_RATE             SR_MHZ(100)
 #define MIN_NUM_SAMPLES        4
 #define DEFAULT_SAMPLERATE     SR_MHZ(100)
@@ -57,6 +57,7 @@
 #define CMD_SET_TRIGGER_MASK       0xc0
 #define CMD_SET_TRIGGER_VALUE      0xc1
 #define CMD_SET_TRIGGER_CONFIG     0xc2
+#define CMD_SET_TRIGGER_EDGE       0xc3
 
 /* Trigger config */
 #define TRIGGER_START              (1 << 3)
@@ -97,6 +98,7 @@ struct dev_context {
 	uint32_t channel_mask;
 	uint32_t trigger_mask[4];
 	uint32_t trigger_value[4];
+	uint32_t trigger_edge[4];
 	int num_stages;
 	uint16_t flag_reg;