lint and addr

Author: caternuson

I2C_Multiple_Same_Address/arduino/multi_bme280_2x/multi_bme280_2x.ino

@@ -18,8 +18,9 @@ void setup() {
 
   // In the call to begin, pass in the I2C address.
   // If left out, the default address is used.
-  bme1.begin();      // use the default address of 0x77
-  bme2.begin(0x76);  // specify the alternate address of 0x76
+  // But also OK to just be explicit and specify.
+  bme1.begin(0x77);  // address = 0x77 (default)
+  bme2.begin(0x76);  // address = 0x76 
 }
 
 

I2C_Multiple_Same_Address/circuitpython/multi_bme280_2x/code.py

@@ -9,9 +9,15 @@
 # Get the board's default I2C port
 i2c = board.I2C()
 
+#--------------------------------------------------------------------
+# NOTE!!! This is the "special" part of the code
+#
 # Create each sensor instance
-bme1 = adafruit_bme280.Adafruit_BME280_I2C(i2c)        # default 0x77 address
-bme2 = adafruit_bme280.Adafruit_BME280_I2C(i2c, 0x76)  # alternate 0x76 address
+# If left out, the default address is used.
+# But also OK to be explicit and specify address.
+bme1 = adafruit_bme280.Adafruit_BME280_I2C(i2c, 0x77)  # address = 0x77
+bme2 = adafruit_bme280.Adafruit_BME280_I2C(i2c, 0x76)  # address = 0x76
+#--------------------------------------------------------------------
 
 print("Two BME280 Example")
 
@@ -24,4 +30,4 @@
     print("BME280 #1 Pressure =", pressure1)
     print("BME280 #2 Pressure =", pressure2)
 
-    time.sleep(1)
+    time.sleep(1)

I2C_Multiple_Same_Address/circuitpython/multi_bme280_3x/code.py

@@ -17,9 +17,9 @@
 # NOTE!!! This is the "special" part of the code
 #
 # Create each BME280 using the TCA9548A channel instead of the I2C object
-bme1 = adafruit_bme280.Adafruit_BME280_I2C(tca[0])
-bme2 = adafruit_bme280.Adafruit_BME280_I2C(tca[1])
-bme3 = adafruit_bme280.Adafruit_BME280_I2C(tca[2])
+bme1 = adafruit_bme280.Adafruit_BME280_I2C(tca[0])   # TCA Channel 0
+bme2 = adafruit_bme280.Adafruit_BME280_I2C(tca[1])   # TCA Channel 1
+bme3 = adafruit_bme280.Adafruit_BME280_I2C(tca[2])   # TCA Channel 2
 #--------------------------------------------------------------------
 
 print("Three BME280 Example")
@@ -35,4 +35,4 @@
     print("BME280 #2 Pressure =", pressure2)
     print("BME280 #3 Pressure =", pressure3)
 
-    time.sleep(1)
+    time.sleep(1)

I2C_Multiple_Same_Address/circuitpython/multi_bme280_4x/code.py

@@ -17,10 +17,10 @@
 # NOTE!!! This is the "special" part of the code
 #
 # Create each BME280 using the TCA9548A channel instead of the I2C object
-bme1 = adafruit_bme280.Adafruit_BME280_I2C(tca[0])
-bme2 = adafruit_bme280.Adafruit_BME280_I2C(tca[1])
-bme3 = adafruit_bme280.Adafruit_BME280_I2C(tca[2])
-bme4 = adafruit_bme280.Adafruit_BME280_I2C(tca[3])
+bme1 = adafruit_bme280.Adafruit_BME280_I2C(tca[0])   # TCA Channel 0
+bme2 = adafruit_bme280.Adafruit_BME280_I2C(tca[1])   # TCA Channel 1
+bme3 = adafruit_bme280.Adafruit_BME280_I2C(tca[2])   # TCA Channel 2
+bme4 = adafruit_bme280.Adafruit_BME280_I2C(tca[3])   # TCA Channel 3
 #--------------------------------------------------------------------
 
 print("Four BME280 Example")
@@ -38,4 +38,4 @@
     print("BME280 #3 Pressure =", pressure3)
     print("BME280 #4 Pressure =", pressure4)
 
-    time.sleep(1)
+    time.sleep(1)