Limit I2C address range

For some reason, the ATTiny85 on the board seems to brick itself when using any address in the range of 0x40 to 0x77. Have not been able to determine the root cause, but this workaround should help prevent that.

Author: sfe-SparkFro

examples/Example2-Change_I2C_Address.py

@@ -44,10 +44,13 @@
 import time
 import sys
 
+# If you've already changed the I2C address, change this to the current address!
+currentAddress = qwiic_soil_moisture_sensor.SOIL_MOISTURE_SENSOR_DEFAULT_ADDRESS
+
 def runExample():
 
 	print("\nSparkFun Qwiic Soil Moisture Sensor Example 2 - Change I2C Address\n")
-	mySoilSensor = qwiic_soil_moisture_sensor.QwiicSoilMoistureSensor()
+	mySoilSensor = qwiic_soil_moisture_sensor.QwiicSoilMoistureSensor(currentAddress)
 
 	if mySoilSensor.is_connected() == False:
 		print("The Qwiic Soil Moisture Sensor device isn't connected to the system. Please check your connection", \
@@ -56,17 +59,17 @@ def runExample():
 
 	mySoilSensor.begin()
 
-	print("\nReady!")
-	print("\nEnter a new I2C address for the Qwiic Soil Moisture Sensor to use.")
-	print("\nDon't use the 0x prefix. For instance if you wanted to")
-	print("\nchange the address to 0x5B, you would type 5B and hit enter.")
-	
+	print("Ready!")
+	print("Enter a new I2C address for the Qwiic Soil Moisture Sensor to use.")
+	print("Any address from 0x08 to 0x3F works.")
+	print("Don't use the 0x prefix. For instance if you wanted to")
+	print("change the address to 0x3B, you would type 3B and hit enter.")
 
 	newAddress = input("\nNew Address: ")
 	newAddress = int(newAddress, 16)
 
 	# Check if the user entered a valid address
-	if newAddress > 0x08 and newAddress < 0x77:
+	if newAddress >= 0x08 and newAddress <= 0x3F:
 		print("\nCharacters received and new address valid!")
 		print("\nAttempting to set Soil Moisture Sensor address...")
 

qwiic_soil_moisture_sensor.py

@@ -36,7 +36,7 @@
 # Some devices have multiple available addresses - this is a list of these addresses.
 # NOTE: The first address in this list is considered the default I2C address for the
 # device.
-_FULL_ADDRESS_LIST = list(range(0x08,0x77+1))					# Full I2C Address List (excluding resrved addresses)
+_FULL_ADDRESS_LIST = list(range(0x08,0x40))				    	# Full I2C Address List (excluding resrved addresses)
 _FULL_ADDRESS_LIST.remove(SOIL_MOISTURE_SENSOR_DEFAULT_ADDRESS) # Remove Default Address of Soil Moisture Sensor from list
 _AVAILABLE_I2C_ADDRESS = [SOIL_MOISTURE_SENSOR_DEFAULT_ADDRESS]	# Initialize with Default Address of Soil Moisture Sensor
 _AVAILABLE_I2C_ADDRESS.extend(_FULL_ADDRESS_LIST)				# Add Full Range of I2C Addresses
@@ -173,8 +173,8 @@ def change_address(self, newAddress):
             :param newAddress: the new address to set the Soil Moisture Sensor reader to
             :rtype: bool
         """
-        if newAddress < 0x07 or newAddress > 0x78:
             return false
+        if newAddress < 0x08 or newAddress > 0x3F:
 
         self._i2c.writeByte(self.address, COMMAND_CHANGE_ADDRESS, newAddress)