77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
// --------------------------------------
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// i2c_scanner (Sming version)
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//
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// Version 1
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// This program (or code that looks like it)
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// can be found in many places.
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// For example on the Arduino.cc forum.
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// The original author is not know.
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// Version 2, June 2012, Using Arduino 1.0.1
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// Adapted to be as simple as possible by Arduino.cc user Krodal
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// Version 3, Feb 26 2013
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// V3 by louarnold
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// Version 4, March 3, 2013, Using Arduino 1.0.3
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// by Arduino.cc user Krodal.
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// Changes by louarnold removed.
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// Scanning addresses changed from 0...127 to 1...119,
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// according to the i2c scanner by Nick Gammon
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// http://www.gammon.com.au/forum/?id=10896
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// Version 5, March 28, 2013
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// As version 4, but address scans now to 127.
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// A sensor seems to use address 120.
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// Version 6, March 15 2015
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// Sming version by Skurydin Alexey
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//
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//
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// This sketch tests the standard 7-bit addresses
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// Devices with higher bit address might not be seen properly.
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//
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#include <SmingCore.h>
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namespace
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{
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SimpleTimer procTimer;
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}
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void scanBus()
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{
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Serial.println("Scanning...");
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unsigned nDevices{0};
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for(uint8_t address = 1; address < 127; address++) {
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// The i2c_scanner uses the return value of
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// the Write.endTransmisstion to see if
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// a device did acknowledge to the address.
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Wire.beginTransmission(address);
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auto error = Wire.endTransmission();
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WDT.alive(); // Second option: notify Watch Dog what you are alive (feed it)
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if(error == 0) {
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Serial << _F("I2C device found at address 0x") << String(address, HEX, 2) << " !" << endl;
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nDevices++;
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} else if(error == 4) {
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Serial << _F("Unknown error at address 0x") << String(address, HEX, 2) << endl;
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}
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}
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Serial << nDevices << _F(" I2C devices found.") << endl << endl;
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}
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void init()
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{
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Serial.begin(SERIAL_BAUD_RATE); // 115200 by default
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Serial.systemDebugOutput(false); // Disable debug output
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WDT.enable(false); // First (but not the best) option: fully disable watch dog timer
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// Default I2C pins (SDA: 2, SCL:0)
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// You can change pins:
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//Wire.pins(14, 12); // SDA, SCL
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Wire.begin();
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procTimer.initializeMs<3000>(scanBus).start();
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}
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