lsm6dsox: Add pedometer example code.

Signed-off-by: Sebastian Romero <s.romero@arduino.cc>

Author: sebromero

micropython/drivers/imu/lsm6dsox/lsm6dsox_pedometer.py

@@ -0,0 +1,55 @@
+"""
+LSM6DSOX IMU Pedometer Example.
+
+This example demonstrates how to use the built-in pedometer feature of the LSM6DSOX IMU.
+The pedometer counts the number of steps taken based on the accelerometer data
+and can generate interrupts when a step is detected.
+
+Copyright (C) Arduino s.r.l. and/or its affiliated companies
+"""
+
+import time
+from lsm6dsox import LSM6DSOX
+
+from machine import Pin, I2C
+
+lsm = LSM6DSOX(I2C(0))
+# Or init in SPI mode.
+# lsm = LSM6DSOX(SPI(5), cs=Pin(10))
+
+# Enable the pedometer feature, set debounce steps to 5, and enable interrupts on both INT1 and INT2.
+# Default debounce steps is 10. This means that after a step is detected, the pedometer
+# will ignore any new steps for the next 5 step detections. This can help to filter out
+# false positives and improve step counting accuracy.
+# If you just want to enable the pedometer, simply call lsm.pedometer_config(enable=True).
+lsm.pedometer_config(debounce=5, int1_enable=True, int2_enable=True)
+
+# Register interrupt handler on a Pin. e.g. D8
+# The interrupt pins are push-pull outputs by default that go low when a step is detected.
+# You can connect either INT1 or INT2 to the interrupt pin.
+interrupt_pin = Pin("D8", Pin.IN)  # Change this to your desired interrupt pin.
+interrupt_fired = False  # Flag to indicate if the interrupt has been fired.
+
+
+def on_step_detected(pin):
+    global interrupt_fired
+    interrupt_fired = True
+
+
+# Configure the interrupt pin to trigger on falling edge (active low) when a step is detected.
+interrupt_pin.irq(trigger=Pin.IRQ_FALLING, handler=on_step_detected)
+
+last_steps = None  # Keep track of the last step count to detect changes.
+
+while True:
+    if interrupt_fired:
+        print("Step detected!")
+        interrupt_fired = False  # Reset the flag after handling the interrupt.
+
+    steps = lsm.steps()
+
+    if steps != last_steps:
+        print(f"Steps: {steps}")
+        last_steps = steps
+
+    time.sleep_ms(100)