X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fserial-lcr%2Fprotocol.c;h=f0e997317de3d9d4fcabe11f56eb412ddf80243f;hb=0ccc6f7cdf3ce1a3ac1f9116b1524f2b326dd6be;hp=645769724bb1a4b8d4e81d6ab1a60aae873867ef;hpb=92499a9c78b63e6a93d67de1883180d40fee7739;p=libsigrok.git

diff --git a/src/hardware/serial-lcr/protocol.c b/src/hardware/serial-lcr/protocol.c
index 64576972..f0e99731 100644
--- a/src/hardware/serial-lcr/protocol.c
+++ b/src/hardware/serial-lcr/protocol.c
@@ -31,7 +31,6 @@ static void send_frame_start(struct sr_dev_inst *sdi)
 	struct lcr_parse_info *info;
 	uint64_t freq;
 	const char *model;
-	struct sr_datafeed_packet packet;
 
 	devc = sdi->priv;
 	info = &devc->parse_info;
@@ -51,8 +50,7 @@ static void send_frame_start(struct sr_dev_inst *sdi)
 	}
 
 	/* Data is about to get sent. Start a new frame. */
-	packet.type = SR_DF_FRAME_BEGIN;
-	sr_session_send(sdi, &packet);
+	std_session_send_df_frame_begin(sdi);
 }
 
 static int handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt)
@@ -98,7 +96,7 @@ static int handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt)
 		g_slist_free(analog.meaning->channels);
 	}
 	if (frame) {
-		std_session_send_frame_end(sdi);
+		std_session_send_df_frame_end(sdi);
 		sr_sw_limits_update_frames_read(&devc->limits, 1);
 	}
 
@@ -148,10 +146,42 @@ static int handle_new_data(struct sr_dev_inst *sdi)
 	return SR_OK;
 }
 
+static int handle_timeout(struct sr_dev_inst *sdi)
+{
+	struct dev_context *devc;
+	const struct lcr_info *lcr;
+	struct sr_serial_dev_inst *serial;
+	int64_t now;
+	int ret;
+
+	devc = sdi->priv;
+	lcr = devc->lcr_info;
+
+	if (!lcr->packet_request)
+		return SR_OK;
+
+	now = g_get_monotonic_time();
+	if (devc->req_next_at && now < devc->req_next_at)
+		return SR_OK;
+
+	serial = sdi->conn;
+	ret = lcr->packet_request(serial);
+	if (ret < 0) {
+		sr_err("Failed to request packet: %d.", ret);
+		return ret;
+	}
+
+	if (lcr->req_timeout_ms)
+		devc->req_next_at = now + lcr->req_timeout_ms * 1000;
+
+	return SR_OK;
+}
+
 SR_PRIV int lcr_receive_data(int fd, int revents, void *cb_data)
 {
 	struct sr_dev_inst *sdi;
 	struct dev_context *devc;
+	int ret;
 
 	(void)fd;
 
@@ -161,10 +191,13 @@ SR_PRIV int lcr_receive_data(int fd, int revents, void *cb_data)
 		return TRUE;
 
 	if (revents == G_IO_IN)
-		handle_new_data(sdi);
-
+		ret = handle_new_data(sdi);
+	else
+		ret = handle_timeout(sdi);
 	if (sr_sw_limits_check(&devc->limits))
 		sr_dev_acquisition_stop(sdi);
+	if (ret != SR_OK)
+		return FALSE;
 
 	return TRUE;
 }