nesso_n1: enable INT pin

Author: facchinm

src/BMI270.cpp

@@ -39,6 +39,16 @@ void BoschSensorClass::onInterrupt(mbed::Callback<void(void)> cb)
   irq.rise(mbed::callback(this, &BoschSensorClass::interrupt_handler));
 }
 #endif
+#ifdef ARDUINO_ARCH_ESP32
+void BoschSensorClass::onInterrupt(void (*cb)(void))
+{
+  if (BMI270_INT1 == -1) {
+    return;
+  }
+  pinMode(BMI270_INT1, INPUT_PULLUP);
+  attachInterrupt(BMI270_INT1, cb, FALLING);
+}
+#endif
 int BoschSensorClass::begin(CfgBoshSensor_t cfg) {
 
   _wire->begin();

src/BoschSensorClass.h

@@ -150,6 +150,17 @@ class BoschSensorClass {
     }
     PinName BMI270_INT1 = NC;
     #endif
+    #ifdef ARDUINO_ARCH_ESP32
+    void onInterrupt(void (*)(void));
+    void setInterruptPin(int irq_pin) {
+      BMI270_INT1 = irq_pin;
+    }
+    #if defined(ARDUINO_ARDUINO_NESSO_N1)
+    int BMI270_INT1 = 3;
+    #else
+    int BMI270_INT1 = -1;
+    #endif
+    #endif
     // Accelerometer
     virtual int readAcceleration(float& x, float& y, float& z); // Results are in G (earth gravity).
     virtual int accelerationAvailable(); // Number of samples in the FIFO.