add BNO055 and BMP280 BFF examples

adding circuitpython and arduino examples for BNO055 BMP280 BFF. also updating adg728 example to flip between two channels

ADG72x_Examples/CircuitPython_ADG728/code.py

@@ -14,12 +14,13 @@ switch = adafruit_adg72x.ADG72x(i2c)
 
 c = 0
 switch_time = 2
+channels = [0, 4]
 clock = time.monotonic()
 while True:
     if (time.monotonic() - clock) > switch_time:
-        print(f"Selecting channel {c + 1}")
-        switch.channel = c
-        c = (c + 1) % 8
+        print(f"Selecting channel {channels[c] + 1}")
+        switch.channel = channels[c]
+        c = (c + 1) % 2
         clock = time.monotonic()
     print((analog_in.value,))
     time.sleep(0.1)

BNO055_BMP280_BFF_Examples/BNO055_BMP280_BFF_Arduino_Demo/BNO055_BMP280_BFF_Arduino_Demo.ino

@@ -0,0 +1,133 @@
+// SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+// BNO055 + BMP280 BFF Demo
+
+#include <Wire.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BMP280.h>
+#include <Adafruit_BNO055.h>
+#include <utility/imumaths.h>
+
+Adafruit_BNO055 bno = Adafruit_BNO055(55, 0x28, &Wire);
+Adafruit_BMP280 bmp;
+
+void setup(void)
+{
+  Serial.begin(115200);
+
+  while (!Serial) delay(10);  // wait for serial port to open!
+
+  Serial.println("Adafruit BNO055 + BMP280 BFF Demo");
+
+  /* Initialise the sensor */
+  if (!bno.begin())
+  {
+    /* There was a problem detecting the BNO055 ... check your connections */
+    Serial.print("Ooops, no BNO055 detected ... Check your wiring or I2C ADDR!");
+    while (1);
+  }
+  if (!bmp.begin()) {
+    Serial.print("Ooops, no BMP280 detected ... Check your wiring or I2C ADDR!");
+    while (1);
+  }
+  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
+                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
+                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
+                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
+                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
+  Serial.println("Found BNO055 and BMP280 sensors!");
+  Serial.println();
+  delay(1000);
+}
+
+void loop(void)
+{
+  //could add VECTOR_ACCELEROMETER, VECTOR_MAGNETOMETER,VECTOR_GRAVITY...
+  sensors_event_t orientationData , angVelocityData , linearAccelData, magnetometerData, accelerometerData, gravityData;
+  bno.getEvent(&orientationData, Adafruit_BNO055::VECTOR_EULER);
+  bno.getEvent(&angVelocityData, Adafruit_BNO055::VECTOR_GYROSCOPE);
+  bno.getEvent(&linearAccelData, Adafruit_BNO055::VECTOR_LINEARACCEL);
+  bno.getEvent(&magnetometerData, Adafruit_BNO055::VECTOR_MAGNETOMETER);
+  bno.getEvent(&accelerometerData, Adafruit_BNO055::VECTOR_ACCELEROMETER);
+  bno.getEvent(&gravityData, Adafruit_BNO055::VECTOR_GRAVITY);
+  Serial.println("BNO055 data:");
+  printEvent(&orientationData);
+  printEvent(&angVelocityData);
+  printEvent(&linearAccelData);
+  printEvent(&magnetometerData);
+  printEvent(&accelerometerData);
+  printEvent(&gravityData);
+  Serial.println("--");
+  Serial.println("BMP280 data:");
+  Serial.print(F("Temperature = "));
+  Serial.print(bmp.readTemperature());
+  Serial.println(" *C");
+
+  Serial.print(F("Pressure = "));
+  Serial.print(bmp.readPressure());
+  Serial.println(" Pa");
+
+  Serial.print(F("Approx altitude = "));
+  Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
+  Serial.println(" m");
+
+  Serial.println();
+  delay(2000);
+}
+
+void printEvent(sensors_event_t* event) {
+  double x = -1000000, y = -1000000 , z = -1000000; //dumb values, easy to spot problem
+  if (event->type == SENSOR_TYPE_ACCELEROMETER) {
+    Serial.print("Accl:");
+    x = event->acceleration.x;
+    y = event->acceleration.y;
+    z = event->acceleration.z;
+  }
+  else if (event->type == SENSOR_TYPE_ORIENTATION) {
+    Serial.print("Orient:");
+    x = event->orientation.x;
+    y = event->orientation.y;
+    z = event->orientation.z;
+  }
+  else if (event->type == SENSOR_TYPE_MAGNETIC_FIELD) {
+    Serial.print("Mag:");
+    x = event->magnetic.x;
+    y = event->magnetic.y;
+    z = event->magnetic.z;
+  }
+  else if (event->type == SENSOR_TYPE_GYROSCOPE) {
+    Serial.print("Gyro:");
+    x = event->gyro.x;
+    y = event->gyro.y;
+    z = event->gyro.z;
+  }
+  else if (event->type == SENSOR_TYPE_ROTATION_VECTOR) {
+    Serial.print("Rot:");
+    x = event->gyro.x;
+    y = event->gyro.y;
+    z = event->gyro.z;
+  }
+  else if (event->type == SENSOR_TYPE_LINEAR_ACCELERATION) {
+    Serial.print("Linear:");
+    x = event->acceleration.x;
+    y = event->acceleration.y;
+    z = event->acceleration.z;
+  }
+  else if (event->type == SENSOR_TYPE_GRAVITY) {
+    Serial.print("Gravity:");
+    x = event->acceleration.x;
+    y = event->acceleration.y;
+    z = event->acceleration.z;
+  }
+  else {
+    Serial.print("Unk:");
+  }
+
+  Serial.print("\tx= ");
+  Serial.print(x);
+  Serial.print(" |\ty= ");
+  Serial.print(y);
+  Serial.print(" |\tz= ");
+  Serial.println(z);
+}

BNO055_BMP280_BFF_Examples/CircuitPython/code.py

@@ -0,0 +1,30 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+#
+# BNO055 + BMP280 BFF Demo
+
+import time
+import board
+import adafruit_bno055
+import adafruit_bmp280
+
+i2c = board.I2C()  # uses board.SCL and board.SDA
+bno055 = adafruit_bno055.BNO055_I2C(i2c)
+
+bmp280 = adafruit_bmp280.Adafruit_BMP280_I2C(i2c)
+bmp280.sea_level_pressure = 1013.25
+
+while True:
+    print(f"Temperature: {bmp280.temperature:0.1f} C")
+    print(f"Pressure: {bmp280.pressure:0.1f} hPa")
+    print(f"Altitude = {bmp280.altitude:0.2f} meters")
+    print(f"Accelerometer (m/s^2): {bno055.acceleration}")
+    print(f"Magnetometer (microteslas): {bno055.magnetic}")
+    print(f"Gyroscope (rad/sec): {bno055.gyro}")
+    print(f"Euler angle: {bno055.euler}")
+    print(f"Quaternion: {bno055.quaternion}")
+    print(f"Linear acceleration (m/s^2): {bno055.linear_acceleration}")
+    print(f"Gravity (m/s^2): {bno055.gravity}")
+    print()
+
+    time.sleep(1)