Vovka
Member
Код:
#define I2C_SCL 5
#define I2C_SDA 4
#include <Wire.h>
void setup()
{
Wire.begin(I2C_SDA, I2C_SCL );
Serial.begin(19200);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for (address = 1; address < 127; address++ ) {
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0) {
Serial.print("I2C device found at address 0x");
if (address < 16) Serial.print("0");
Serial.print(address, HEX);
Serial.println(" !");
nDevices++;
}
else if (error == 4)
{
Serial.print("Unknown error at address 0x");
if (address < 16) Serial.print("0");
Serial.println(address, HEX);
}
}
if (nDevices == 0) Serial.println("No I2C devices found\n");
else Serial.println("done\n");
delay(5000);
}
Запускаю сканер - не находит. В чем причина?