From 90d4343c153585b995289f4207f75afd9b5323db Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Fri, 28 Nov 2025 15:39:45 +0100
Subject: [PATCH 1/3] esp32: fix min macro

---
 src/BoschSensorClass.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/BoschSensorClass.h b/src/BoschSensorClass.h
index 0af91de..d7fa604 100644
--- a/src/BoschSensorClass.h
+++ b/src/BoschSensorClass.h
@@ -79,7 +79,7 @@ class ContinuousMode {
     if (ret != 0) {
       return 0;
     }
-    _available = min(status, sizeof(fifoData)) / (6 + 6); // 6 bytes per accel sample
+    _available = min((size_t)status, sizeof(fifoData)) / (6 + 6); // 6 bytes per accel sample
     _availableG = _available;
     _availableA = _available;
     ret = bmi2_extract_accel(accel_data, &_available, &fifoFrame, bmi2);

From e8b6b1bb939803a1121049d4999fa7f054dc01b6 Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Fri, 28 Nov 2025 15:40:01 +0100
Subject: [PATCH 2/3] nesso_n1: enable INT pin

---
 src/BMI270.cpp         | 10 ++++++++++
 src/BoschSensorClass.h | 11 +++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/BMI270.cpp b/src/BMI270.cpp
index 6f869b1..9dc4eb1 100644
--- a/src/BMI270.cpp
+++ b/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();
diff --git a/src/BoschSensorClass.h b/src/BoschSensorClass.h
index d7fa604..4290d7c 100644
--- a/src/BoschSensorClass.h
+++ b/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.

From ff237b5230bf6712f9610e4b993295d68c720ede Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Fri, 28 Nov 2025 15:48:55 +0100
Subject: [PATCH 3/3] nesso_n1: fix interrupt example

---
 .../Interrupts_subclassing.ino                     | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/examples/Interrupts_subclassing/Interrupts_subclassing.ino b/examples/Interrupts_subclassing/Interrupts_subclassing.ino
index c88bff0..988e6c8 100644
--- a/examples/Interrupts_subclassing/Interrupts_subclassing.ino
+++ b/examples/Interrupts_subclassing/Interrupts_subclassing.ino
@@ -14,7 +14,11 @@ class MyBoschSensor: public BoschSensorClass {
       struct bmi2_int_pin_config int_pin_cfg;
       int_pin_cfg.pin_type = BMI2_INT1;
       int_pin_cfg.int_latch = BMI2_INT_NON_LATCH;
+    #if defined(ARDUINO_ARDUINO_NESSO_N1)
+      int_pin_cfg.pin_cfg[0].lvl = BMI2_INT_ACTIVE_LOW;
+    #else
       int_pin_cfg.pin_cfg[0].lvl = BMI2_INT_ACTIVE_HIGH;
+    #endif
       int_pin_cfg.pin_cfg[0].od = BMI2_INT_PUSH_PULL;
       int_pin_cfg.pin_cfg[0].output_en = BMI2_INT_OUTPUT_ENABLE;
       int_pin_cfg.pin_cfg[0].input_en = BMI2_INT_INPUT_DISABLE;
@@ -52,7 +56,11 @@ class MyBoschSensor: public BoschSensorClass {
     }
 };
 
+#if defined(ARDUINO_ARDUINO_NESSO_N1)
+MyBoschSensor myIMU(Wire);
+#else
 MyBoschSensor myIMU(Wire1);
+#endif
 
 void print_data() {
   // we can also read accelerometer / gyro data here!
@@ -65,7 +73,11 @@ void setup() {
   while (!Serial);
   myIMU.debug(Serial);
   myIMU.onInterrupt(print_data);
-  myIMU.begin();
+#if defined(ARDUINO_ARDUINO_NESSO_N1)
+  myIMU.begin(BOSCH_ACCEL_ONLY);
+#else
+  myIMU.begin(BOSCH_ACCEL_AND_GYRO);
+#endif
 
   Serial.print("Accelerometer sample rate = ");
   Serial.println(myIMU.accelerationSampleRate());