X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=std.c;fp=std.c;h=7dc020b999f736bd36d60628862dbd11f9065475;hb=23dc6661667b05a91b01ab6a6fa425aa57af6daf;hp=2b4dec3fc7903f5e474092e985c42acdfe3295cb;hpb=d43b090816f61e77d8054084e85202de1a1ebeb7;p=libsigrok.git

diff --git a/std.c b/std.c
index 2b4dec3f..7dc020b9 100644
--- a/std.c
+++ b/std.c
@@ -103,6 +103,32 @@ SR_PRIV int std_session_send_df_header(const struct sr_dev_inst *sdi,
 
 #ifdef HAVE_LIBSERIALPORT
 
+/*
+ * Standard serial driver dev_open() helper.
+ *
+ * This function can be used to implement the dev_open() driver API
+ * callback in drivers that use a serial port. The port is opened
+ * with the SERIAL_RDWR and SERIAL_NONBLOCK flags.
+ *
+ * If the open succeeded, the status field of the given sdi is set
+ * to SR_ST_ACTIVE.
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR Serial port open failed.
+ */
+SR_PRIV int std_serial_dev_open(struct sr_dev_inst *sdi)
+{
+	struct sr_serial_dev_inst *serial;
+
+	serial = sdi->conn;
+	if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+		return SR_ERR;
+
+	sdi->status = SR_ST_ACTIVE;
+
+	return SR_OK;
+}
+
 /*
  * Standard sr_session_stop() API helper.
  *