v10

examples/Example1_BasicReadings/Example1_BasicReadings.ino

@@ -15,7 +15,7 @@
 #include "SparkFun_Qwiic_Ultrasonic_Arduino_Library.h"
 
 // Create an ultrasonic sensor object
-QwiicUltrasonic myUltrasonic;
+QwiicUltrasonic myUltrasonic(kQwiicUltrasonicFWLatest);
 
 // Here we set the device address. Note that an older version of the Qwiic
 // Ultrasonic firmware used a default address of 0x00. If yours uses 0x00,

examples/Example2_OLED_Distance/Example2_OLED_Distance.ino

@@ -23,11 +23,8 @@
 #include "res/qw_fnt_8x16.h"
 #include "SparkFun_Qwiic_Ultrasonic_Arduino_Library.h"
 
-const int TRIG_PIN = 7;
-const int ECHO_PIN = 8;
-
 // Create an ultrasonic sensor object
-QwiicUltrasonic myUltrasonic;
+QwiicUltrasonic myUltrasonic(kQwiicUltrasonicFWLatest);
 // Creat an OLED object
 QwiicNarrowOLED myOLED;
 

examples/Example3_Trigger_Echo/Example3_Trigger_Echo.ino

@@ -31,7 +31,7 @@ const int echoPin = 8; // Echo Pin of Ultrasonic Sensor
 float distance = 0.0;
 float duration = 0.0;
 const float speedOfSound = 340.00; // Speed of sound in m/s
-const float convMilli= 1000.00; // Speed of sound in m/s
+const float millisPerSecond= 1000.00; // Number of milliseconds in a second
 
 void setup() {
 
@@ -64,7 +64,7 @@ void loop() {
   // Time until sound detected * speed of sound * conversion to mm 
   // Divide by two because we only want the time the wave traveled to the object, 
   // not to the object and back.
-  distance = (duration * speedOfSound * convMilli) / 2; 
+  distance = (duration * speedOfSound * millisPerSecond) / 2; 
 
   // Print measurement
   Serial.print("Distance (mm): ");

examples/Example4_ChangeAddress/Example4_ChangeAddress.ino

@@ -17,7 +17,7 @@
 #include "SparkFun_Qwiic_Ultrasonic_Arduino_Library.h"
 
 // Create an ultrasonic sensor object
-QwiicUltrasonic myUltrasonic;
+QwiicUltrasonic myUltrasonic(kQwiicUltrasonicFWLatest);
 
 // Here we set the device address. Note that an older version of the Qwiic
 // Ultrasonic firmware used a default address of 0x00. If yours uses 0x00,
@@ -27,9 +27,9 @@ uint8_t deviceAddress = kQwiicUltrasonicDefaultAddress; // 0x2F
 // uint8_t deviceAddress = 0x00;
 
 // New addres is 7-bit unshifted.
-uint8_t NEW_ADDR = 0x1E;
+uint8_t newAddr = 0x20;
 //If using an older version of the Qwiic Ultrasonic, your address range is: 0x20 - 0x2F
-//uint8_t NEW_ADDR = 0x2F;
+//uint8_t newAddr = 0x2F;
 
 
 void setup()
@@ -55,13 +55,11 @@ void setup()
   delay(1000);
 
   Serial.print("Changing Address To: ");
-  Serial.println(NEW_ADDR, HEX);
+  Serial.println(newAddr, HEX);
 
 
   // Call change address.....
-  sfeTkError_t err =  myUltrasonic.updateAddress(NEW_ADDR);
-  // If you have an older version of the Qwiic Ultrasonic, you'll need to use the following:
-  //sfeTkError_t err =  myUltrasonic.changeAddress(NEW_ADDR);
+  sfeTkError_t err =  myUltrasonic.changeAddress(newAddr);
 
   if(err)
   {
@@ -74,11 +72,8 @@ void setup()
   }
   delay(1000);
 
-  // I
-
-
   Serial.print("Load up example 1 with the new address at: ");
-  Serial.println(NEW_ADDR, HEX);
+  Serial.println(newAddr, HEX);
   Serial.println("Freezing....");
   while(1)
     ;

library.properties

@@ -7,4 +7,3 @@ paragraph=
 category=Sensors
 url=https://github.com/sparkfun/SparkFun_Qwiic_Ultrasonic_Arduino_Library
 architectures=*
-depends=SparkFun Toolkit

src/sfeQwiicUltrasonic.cpp

@@ -19,15 +19,18 @@ sfeTkError_t sfeQwiicUltrasonic::begin(sfeTkII2C *theBus)
         return kSTkErrFail;
 
     // Check the device address
-    if (theBus->address() < kQwiicUltrasonicMinAddress || theBus->address() > kQwiicUltrasonicMaxAddress)
+    if(_fwVersion == kQwiicUltrasonicFWOld)
     {
-        // An older version of the firmware used 0x00 as the default address.
-        // It's not really a valid address, but we need to allow it. Any other
-        // address can't be used
-        if (theBus->address() != 0x00)
-            return kSTkErrFail;
-    }
 
+        if (theBus->address() < kQwiicUltrasonicMinAddress || theBus->address() > kQwiicUltrasonicMaxAddress)
+        {
+            // An older version of the firmware used 0x00 as the default address.
+            // It's not really a valid address, but we need to allow it. Any other
+            // address can't be used
+            if (theBus->address() != 0x00)
+                return kSTkErrFail;
+        }
+    }
     // Set bus pointer
     _theBus = theBus;
 
@@ -48,7 +51,8 @@ sfeTkError_t sfeQwiicUltrasonic::getDistance(uint16_t &distance)
     uint8_t rawData[2] = {};
 
     // Get the distance
-    sfeTkError_t err = _theBus->readBlock(kUltrasonicDistanceReadCommand, rawData, numBytes, bytesRead);
+    //sfeTkError_t err = _theBus->readBlock(kUltrasonicDistanceReadCommand, rawData, numBytes, bytesRead);
+    sfeTkError_t err = _theBus->readRegisterRegion(kUltrasonicDistanceReadCommand, rawData, numBytes, bytesRead);
 
     // Check whether the read was successful
     if (err != kSTkErrOk)
@@ -61,41 +65,40 @@ sfeTkError_t sfeQwiicUltrasonic::getDistance(uint16_t &distance)
     return kSTkErrOk;
 }
 
-sfeTkError_t sfeQwiicUltrasonic::changeAddress(const uint8_t &address)
+sfeTkError_t sfeQwiicUltrasonic::changeAddress(uint8_t &address)
 {
     // Check whether the address is valid
-    if (address < kQwiicUltrasonicMinAddress || address > kQwiicUltrasonicMaxAddress)
-        return kSTkErrFail;
-
-    // Write the new address to the device. The first bit must be set to 1
-    sfeTkError_t err = _theBus->writeByte(address | 0x80);
-
-    // Check whether the write was successful
-    if (err != kSTkErrOk)
-        return err;
 
-    // Update the address in the bus
-    _theBus->setAddress(address);
+    sfeTkError_t err;
 
-    // Done!
-    return kSTkErrOk;
-}
+    if(_fwVersion == kQwiicUltrasonicFWOld)
+    {
+        // Old firmware only supports a limited range of addresses.
+        if (address < kQwiicUltrasonicMinAddress || address > kQwiicUltrasonicMaxAddress)
+            return kSTkErrFail;
 
-sfeTkError_t sfeQwiicUltrasonic::updateAddress(uint8_t &address)
-{
-    // Check whether the address is valid
-    sfeTkError_t err;
-    size_t numBytes = 2;
-    // We want to shift the address left before we send it. 
-
-    address <<= 1;
-    const uint8_t toWrite[2] = {kUltrasonicAddressChangeCommand, address};
+        // Write the new address to the device. The first bit must be set to 1
+        err = _theBus->writeByte(address | 0x80);
+    }
+    else if(_fwVersion == kQwiicUltrasonicFWLatest)
+    {
+        size_t numBytes = 2;
+        // Latest firmware versions supports all of the available I2C addresses.
+        if (address < kQwiicUltrasonicI2CAddressMin || address > kQwiicUltrasonicI2CAddressMax)
+            return kSTkErrFail;
 
-    if (address < kQwiicI2CAddressMin|| address > kQwiicI2CAddressMax)
-        return kSTkErrFail;
+        // We want to shift the address left before we send it.
+        address <<= 1;
+        const uint8_t toWrite[2] = {kUltrasonicAddressChangeCommand, address};
 
-    // Write the new address to the device. 
-    err = _theBus->writeBlock(toWrite, numBytes);
+        //Write the new address to the device
+        err = _theBus->writeBlock(toWrite, numBytes);
+    }
+    else {
+        //There was some error setting the version in the constructor
+        //return an error.
+        return kSTkErrOk;
+    }
 
     // Check whether the write was successful
     if (err != kSTkErrOk)

src/sfeQwiicUltrasonic.h

@@ -1,9 +1,9 @@
-/* SparkFun Ulrasonic Distance Sensor 
- * 
- * Product: 
+/* SparkFun Ulrasonic Distance Sensor
+ *
+ * Product:
  *  *  SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04 (SEN-1XXXX)
  *  *  https://www.sparkfun.com/1XXXX
- * 
+ *
  * SPDX-License-Identifier: MIT
  *
  * Copyright (c) 2024 SparkFun Electronics
@@ -12,20 +12,21 @@
 #pragma once
 
 #include "SparkFun_Toolkit.h"
-#include <stdint.h>
 
 // Available I2C addresses of the Qwiic Ultrasonic
 const uint8_t kQwiicUltrasonicDefaultAddress = 0x2F;
+
+const uint8_t kQwiicUltrasonicFWLatest = 0x01;
+const uint8_t kQwiicUltrasonicFWOld = 0x10;
+
 // These addresses are the min and max (respectively) of valid I2C addresses that can
 // be used for the newest revision of the Qwiic Ultrasonic sensor.
-const uint8_t kQwiicI2CAddressMin = 0x08;
-const uint8_t kQwiicI2CAddressMax = 0x7F;
+const uint8_t kQwiicUltrasonicI2CAddressMin = 0x08;
+const uint8_t kQwiicUltrasonicI2CAddressMax = 0x7F;
 // Available I2C addresses of the Qwiic Ultrasonic
-const uint8_t kQwiicUltrasonicAddresses[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
-                                             0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F};
-const uint8_t kQwiicUltrasonicNumAddresses = sizeof(kQwiicUltrasonicAddresses) / sizeof(uint8_t);
-const uint8_t kQwiicUltrasonicMinAddress = kQwiicUltrasonicAddresses[0];
-const uint8_t kQwiicUltrasonicMaxAddress = kQwiicUltrasonicAddresses[15];;
+const uint8_t kQwiicUltrasonicMinAddress = 0x20;
+const uint8_t kQwiicUltrasonicMaxAddress = 0x2F;
+;
 // I2C commands
 const uint8_t kUltrasonicDistanceReadCommand = 0x01;
 const uint8_t kUltrasonicAddressChangeCommand = 0x04;
@@ -34,10 +35,16 @@ class sfeQwiicUltrasonic
 {
   public:
     /// @brief Default constructor
-    sfeQwiicUltrasonic() : _theBus(nullptr)
+    sfeQwiicUltrasonic() : _theBus(nullptr), _fwVersion(kQwiicUltrasonicFWLatest)
     {
     }
 
+    /// @brief Default constructor
+   sfeQwiicUltrasonic(uint8_t fwVersion) : _theBus(nullptr), _fwVersion(fwVersion)
+   {
+   }
+
+
     /// @brief Begins the Qwiic Ultrasonic sensor
     /// @param theBus I2C bus to use for communication
     /// @return 0 for succuss, negative for errors, positive for warnings
@@ -55,17 +62,15 @@ class sfeQwiicUltrasonic
     /// @brief Changes the I2C address of older Qwiic Ultrasonic sensors.
     /// @param address New address, must be in the range 0x20 to 0x2F
     /// @return 0 for succuss, negative for errors, positive for warnings
-    sfeTkError_t changeAddress(const uint8_t &address);
-
-    /// @brief Changes the I2C address of the latest revision of the Qwiic Ultrasonic sensor.
-    /// @param address New address, must be in the range 0x20 to 0x2F
-    /// @return 0 for succuss, negative for errors, positive for warnings
-    sfeTkError_t updateAddress(uint8_t &address);
+    sfeTkError_t changeAddress(uint8_t &address);
 
     /// @brief Gets the current I2C address being used by the library for the Qwiic Ultrasonic sensor
     /// @return The current I2C address, 7-bit unshifted
     uint8_t getAddress();
 
   protected:
     sfeTkII2C *_theBus;
+
+  private:
+    uint8_t _fwVersion = 0x00;
 };