Update Example6_ChangeI2CAddress.ino

Co-Authored-By: Fischer Moseley <[email protected]>

Author: FischerMoseley

examples/Example6_ChangeI2CAddress/Example6_ChangeI2CAddress.ino

@@ -22,106 +22,71 @@ QwiicButton device;
 void setup(){
     Serial.begin(115200);
     Wire.begin(); //Join I2C bus
-    Wire.setClock(400000); //Set I2C clock speed to 400kHz
+    Wire.setClock(400000);
+    device.begin(DEFAULT_BUTTON_ADDRESS); // Initialize our button! Set to DEFAULT_SWITCH_ADDRESS if you're using a
+                                          // switch, or whatever the I2C address of your device is
 
     //check if button will acknowledge over I2C
-    if(device.isConnected()){
+    if(device.isConnected()) {
         Serial.println("Device will acknowledge!");
     }
 
     else {
         Serial.println("Device did not acknowledge! Freezing.");
         while(1);
     }
-}
-
-void loop() {
-    //print an introduction
-    Serial.println("Howdy stranger! This configurator will help you change");
-    Serial.println("The I2C address of your attached Qwiic Button/Switch.");
-    Serial.println();
-    Serial.println("Also, make sure that your Line Ending in the Serial Monitor");
-    Serial.println("is set to 'Both NL & CR'");
     Serial.println();
-    Serial.println("To begin, let's scan for a device. Disconnect all other Qwiic or");
-    Serial.println("I2C devices from your microcontroller, and then send any character");
-    Serial.println("to begin the scan.");
-
-    while(!Serial.available()); //wait for the user to send a character
-    while(Serial.available()) Serial.read(); //flush the readbuffer
-
-    Serial.println("Beginning scan...");
-    uint8_t address = scanForDevices();
-    
-    if(address == -1) { //if the function returned with error, freeze
-        Serial.println("No devices found! Freezing.");
-        while(1);
-    }
-    
-    //if we got to here, it means that we haven't frozen, so we print that we found a device
-    Serial.print("Device found at address: 0x");
-    Serial.println(address, HEX);
-
-    device.begin(address);    
-
-    //Inform the user that they'll have to pick out a new address
-    Serial.println();
-    Serial.println("Enter a new I2C address for the Qwiic Button to use (in hex)!");
+    Serial.println("Enter a new I2C address for the Qwiic Button/Switch to use!");
     Serial.println("Don't use the 0x prefix. For instance, if you wanted to");
     Serial.println("change the address to 0x5B, you would enter 5B and press enter.");
+    Serial.println();
+    Serial.println("One more thing! Make sure your line ending is set to 'Both NL & CR'");
+    Serial.println("in the Serial Monitor.");
+    Serial.println();
+}
 
-    while(!Serial.available()); //wait until the user sends some characters
-
-    //Read the buffer and parse it for a valid hex address
-    String stringBuffer = Serial.readStringUntil('\r');
-    char charBuffer[10];
-    stringBuffer.toCharArray(charBuffer, 10);
-    uint8_t newAddress = 0;
-    uint8_t success = sscanf(charBuffer, "%x", &newAddress);
-
-    //if precisely 1 valid hex number was found in the string, begin setting address
-    if(success == 1) {
-        //check that the address is valid
-        if(newAddress > 0x08 && newAddress < 0x77) {
-            Serial.println("Character recieved, and device address is valid!");
-            Serial.print("Attempting to set device address to: ");
-            Serial.println(newAddress, HEX);
-            
-            device.setI2Caddress(newAddress);
-            delay(10); //give the button/switch some time to restart its I2C hardware
-
-            if(device.isConnected()) {
-                //Job is done, print that we're finished
-                Serial.print("Address successfully changed! Device will respond at: ");
-                Serial.println(device.getI2Caddress(), HEX);
-
-                Serial.println();
-                Serial.println("Job done, freezing.");
-                while(1);
+void loop(){
+    //check if button is pressed, and tell us if it is!
+    if(Serial.available()) {
+        uint8_t newAddress = 0;
+        String stringBuffer = Serial.readStringUntil('\r');
+        char charBuffer[10];
+        stringBuffer.toCharArray(charBuffer, 10);
+        uint8_t success = sscanf(charBuffer, "%x", &newAddress);
+
+        if(success) {
+            if(newAddress > 0x08 && newAddress < 0x77) {
+                Serial.println("Character recieved, and device address is valid!");
+                Serial.print("Attempting to set device address to 0x");
+                Serial.println(newAddress, HEX);
+
+                if(device.setI2Caddress(newAddress) == 0) {
+                    Serial.println("Device address set succeeded!");
+                }
+
+                else {
+                    Serial.println("Device address set failed!");
+                }
+
+                delay(100); //give the hardware time to do whatever configuration it needs to do\
+
+                if(device.isConnected()) {
+                    Serial.println("Device will acknowledge on new I2C address!");
+                }
+
+                else {
+                    Serial.println("Device will not acknowledge on new I2C address.");
+                }
             }
 
             else {
-                Serial.print("Address change was not successfull! Reset and try again.");
+                Serial.println("Address out of range! Try an adress between 0x08 and 0x77");
             }
         }
 
         else {
-            Serial.println("Address out of range! Try an adress between 0x08 and 0x77");
-        }
-    }
-
-    else {
-        Serial.print("Invalid Text! Try again.");
-    }
-}
-
-//returns the I2C address of the connected device, or -1 if there's no device found
-int16_t scanForDevices() {
-    for(uint8_t addr = 0; addr < 127; addr++) {
-        Wire.beginTransmission(addr);
-        if(Wire.endTransmission() == 0) {
-            return addr;
+            Serial.print("Invalid Text! Try again.");
         }
+        
     }
-    return -1;
 }