Merge pull request #41 from josephduchesne/master

Added One-Shot Ranging trigger

Author: PPVJM

src/SparkFun_VL53L1X.cpp

@@ -133,6 +133,10 @@ void SFEVL53L1X::startRanging()
 	_device->VL53L1X_StartRanging();
 }
 
+void SFEVL53L1X::startOneshotRanging() {
+  	_device->VL53L1X_StartOneshotRanging();
+}
+
 void SFEVL53L1X::stopRanging()
 {
 	_device->VL53L1X_StopRanging();

src/SparkFun_VL53L1X.h

@@ -63,6 +63,7 @@ class SFEVL53L1X
 	void setInterruptPolarityLow(); //Set the polarity of an active interrupt to Low
 	uint8_t getInterruptPolarity(); //get the current interrupt polarity
 	void startRanging(); //Begins taking measurements
+	void startOneshotRanging();  // Start one-shot ranging
 	void stopRanging(); //Stops taking measurements
 	bool checkForDataReady(); //Checks the to see if data is ready
 	void setTimingBudgetInMs(uint16_t timingBudget); //Set the timing budget for a measurement

src/vl53l1x_class.cpp

@@ -223,11 +223,19 @@ VL53L1X_ERROR VL53L1X::VL53L1X_GetInterruptPolarity(uint8_t *pInterruptPolarity)
 VL53L1X_ERROR VL53L1X::VL53L1X_StartRanging()
 {
 	VL53L1X_ERROR status = 0;
-
+	// Consider: maybe also VL53L1_WrByte(Device, SYSTEM__INTERRUPT_CLEAR, 0x01); /* clear interrupt trigger */
 	status = VL53L1_WrByte(Device, SYSTEM__MODE_START, 0x40); /* Enable VL53L1X */
 	return status;
 }
 
+VL53L1X_ERROR VL53L1X::VL53L1X_StartOneshotRanging()
+{
+	VL53L1X_ERROR status = 0;
+	VL53L1_WrByte(Device, SYSTEM__INTERRUPT_CLEAR, 0x01); /*  clear interrupt trigger */
+	status = VL53L1_WrByte(Device, SYSTEM__MODE_START, 0x10); /* Enable VL53L1X one-shot ranging */
+	return status;
+}
+
 VL53L1X_ERROR VL53L1X::VL53L1X_StopRanging()
 {
 	VL53L1X_ERROR status = 0;

src/vl53l1x_class.h

@@ -304,6 +304,11 @@ class VL53L1X : public RangeSensor
 	 */
 	VL53L1X_ERROR VL53L1X_StartRanging();
 
+	/**
+	 * @brief This function starts a one-shot ranging distance operation\n
+	 */
+	VL53L1X_ERROR VL53L1X_StartOneshotRanging();
+
 	/**
 	 * @brief This function stops the ranging.
 	 */