Adds software interrupt example

Author: edspark

examples/Ex3_SoftwareInterrupts/Ex3_SoftwareInterrupts.ino

@@ -0,0 +1,58 @@
+#include <Wire.h>
+#include "SparkFun_Qwiic_KX13X.h"
+
+QwiicKX132 kxAccel;
+outputData myData; // This will hold the accelerometer's output. 
+
+void setup() {
+
+  while(!Serial){
+    delay(50);
+  }
+
+  Serial.begin(115200);
+  Serial.println("Welcome.");
+
+  Wire.begin();
+  if( !kxAccel.begin() ){
+    Serial.println("Could not communicate with the the KX13X. Freezing.");
+    while(1);
+  }
+  else
+    Serial.println("Ready.");
+    
+
+
+  if( !kxAccel.initialize(SOFT_INT_SETTINGS)){
+    Serial.println("Could not initialize the chip. Freezing.");
+    while(1);
+  }
+  else
+    Serial.println("Initialized...");
+
+  // kxAccel.setRange(KX132_RANGE16G);
+
+}
+
+void loop() {
+  
+
+  if( kxAccel.dataTrigger() ) {
+    Serial.println("Data Ready.");
+    // Interrupt is cleared on reading registers.
+    myData = kxAccel.getAccelData();
+    Serial.print("X: ");
+    Serial.print(myData.xData, 4);
+    Serial.print("g ");
+    Serial.print(" Y: ");
+    Serial.print(myData.zData, 4);
+    Serial.print("g ");
+    Serial.print(" Z: ");
+    Serial.print(myData.zData, 4);
+    Serial.println("g ");
+  }
+  
+    
+  
+  delay(20); // Delay should be 1/ODR (Output Data Rate), default is 50Hz
+}

src/SparkFun_Qwiic_KX13X.cpp

@@ -255,12 +255,16 @@ bool QwiicKX13xCore::clearInterrupt(){
 // This function triggers collection of data by the KX13X.
 bool QwiicKX13xCore::dataTrigger(){
 
+  uint8_t tempRegVal;
   KX13X_STATUS_t returnError;
-  returnError = writeRegister(KX13X_INS2, 0xEF, true, 0);
-  if( returnError == KX13X_SUCCESS )
-    return true;
-  else
+  returnError = readRegister(&tempRegVal, KX13X_INS2);
+  if( returnError == KX13X_SUCCESS ){
+    if( tempRegVal & 0x10 )
+      return true;
+  }
+  else 
     return false;
+
 }
 
 // Address: 0x5E , bit[7:0]: default value is: unknown