46 lines
957 B
Arduino
46 lines
957 B
Arduino
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/*********
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Rui Santos
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Complete project details at https://randomnerdtutorials.com
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*********/
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#include <Wire.h>
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void setup() {
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Wire.begin();
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Serial.begin(115200);
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Serial.println("\nI2C Scanner");
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}
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void loop() {
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byte error, address;
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int nDevices;
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Serial.println("Scanning...");
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nDevices = 0;
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for(address = 1; address < 127; address++ ) {
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Wire.beginTransmission(address);
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error = Wire.endTransmission();
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if (error == 0) {
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Serial.print("I2C device found at address 0x");
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if (address<16) {
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Serial.print("0");
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}
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Serial.println(address,HEX);
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nDevices++;
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}
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else if (error==4) {
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Serial.print("Unknow error at address 0x");
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if (address<16) {
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Serial.print("0");
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}
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Serial.println(address,HEX);
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}
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}
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if (nDevices == 0) {
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Serial.println("No I2C devices found\n");
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}
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else {
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Serial.println("done\n");
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}
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delay(5000);
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}
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