diff --git a/src_main/io/pispi.cpp b/src_main/io/pispi.cpp
index d90a553a..547966a4 100644
--- a/src_main/io/pispi.cpp
+++ b/src_main/io/pispi.cpp
@@ -40,6 +40,19 @@ void PISPI::setBits(uchar bits) {
 }
 
 
+void PISPI::setParameter(PISPI::Parameters parameter, bool on) {
+	PIFlags<Parameters> cp = (PIFlags<Parameters>)spi_mode;
+	cp.setFlag(parameter, on);
+	spi_mode = (int)cp;
+}
+
+
+bool PISPI::isParameterSet(PISPI::Parameters parameter) const {
+	PIFlags<Parameters> cp = (PIFlags<Parameters>)spi_mode;
+	return cp[parameter];
+}
+
+
 bool PISPI::openDevice() {
 #ifndef WINDOWS
 	int ret = 0;
diff --git a/src_main/io/pispi.h b/src_main/io/pispi.h
index 62349c87..4d5c21f5 100644
--- a/src_main/io/pispi.h
+++ b/src_main/io/pispi.h
@@ -13,9 +13,8 @@ public:
 
 	//! \brief Parameters of PISPI
 	enum Parameters {
-		ClockInverse /*! SPI clk polarity control check and generate */ = 0x1,
-		ParityOdd /*! Parity is odd instead of even */ = 0x2,
-		TwoStopBits /*! Two stop bits instead of one */ = 0x4
+		ClockInverse /*! SPI clk polarity control*/ = 0x1,
+		ClockPhaseShift /*! SPI clk phase control */ = 0x2,
 	};
 
 	void setSpeed(uint speed_hz);
@@ -24,6 +23,19 @@ public:
 	void setBits(uchar bits = 8);
 	uchar bits() const {return spi_bits;}
 
+	//! Set parameters to "parameters_"
+	void setParameters(PIFlags<PISPI::Parameters> parameters_) {spi_mode = (int)parameters_;}
+
+	//! Set parameter "parameter" to "on" state
+	void setParameter(PISPI::Parameters parameter, bool on = true);
+
+	//! Returns if parameter "parameter" is set
+	bool isParameterSet(PISPI::Parameters parameter) const;
+
+	//! Returns parameters
+	PIFlags<PISPI::Parameters> parameters() const {return spi_mode;}
+
+
 protected:
 	bool openDevice();
 	bool closeDevice();