X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fserial.c;h=34d7cbea3f9b40b965d588b8c4a6003a8d54cc24;hb=3f8453b274d7776ff4f0bb7a869eb6211364c190;hp=8ffba7956b09cd4e248627528d72bd56c674fd0a;hpb=b1184024fed838ec67d3cb2de097b66b6c48d9c7;p=libsigrok.git

diff --git a/src/serial.c b/src/serial.c
index 8ffba795..34d7cbea 100644
--- a/src/serial.c
+++ b/src/serial.c
@@ -561,6 +561,37 @@ SR_PRIV int serial_set_params(struct sr_serial_dev_inst *serial,
 	return ret;
 }
 
+/**
+ * Manipulate handshake state for the specified serial port.
+ *
+ * @param serial Previously initialized serial port structure.
+ * @param[in] rts Status of RTS line (0 or 1; or -1 to ignore).
+ * @param[in] dtr Status of DTR line (0 or 1; or -1 to ignore).
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR Failure.
+ *
+ * @private
+ */
+SR_PRIV int serial_set_handshake(struct sr_serial_dev_inst *serial,
+	int rts, int dtr)
+{
+	int ret;
+
+	if (!serial) {
+		sr_dbg("Invalid serial port.");
+		return SR_ERR;
+	}
+
+	sr_spew("Modifying serial parameters on port %s.", serial->port);
+
+	if (!serial->lib_funcs || !serial->lib_funcs->set_handshake)
+		return SR_ERR_NA;
+	ret = serial->lib_funcs->set_handshake(serial, rts, dtr);
+
+	return ret;
+}
+
 /**
  * Set serial parameters for the specified serial port from parameter string.
  *