58 lines
1.3 KiB
Arduino
58 lines
1.3 KiB
Arduino
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/**
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* @file I2CScan.ino
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* @author Lewis He (lewishe@outlook.com)
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* @license MIT
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* @copyright Copyright (c) 2023 Shenzhen Xin Yuan Electronic Technology Co., Ltd
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* @date 2023-06-30
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*
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*/
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#include <Arduino.h>
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#include <Wire.h>
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void deviceScan(TwoWire *_port, Stream *stream)
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{
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uint8_t err, addr;
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int nDevices = 0;
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for (addr = 1; addr < 127; addr++) {
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_port->beginTransmission(addr);
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err = _port->endTransmission();
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if (err == 0) {
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stream->print("I2C device found at address 0x");
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if (addr < 16)
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stream->print("0");
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stream->print(addr, HEX);
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stream->println(" !");
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nDevices++;
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} else if (err == 4) {
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stream->print("Unknow error at address 0x");
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if (addr < 16)
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stream->print("0");
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stream->println(addr, HEX);
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}
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}
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if (nDevices == 0)
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stream->println("No I2C devices found\n");
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else
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stream->println("Done\n");
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}
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int sda = 18;
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int scl = 17;
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#define PIN_POWER_ON 15
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void setup()
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{
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pinMode(PIN_POWER_ON, OUTPUT);
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digitalWrite(PIN_POWER_ON, HIGH);
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Serial.begin(115200);
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Wire.begin(sda, scl);
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}
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void loop()
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{
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deviceScan(&Wire, &Serial);
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delay(1000);
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}
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