when i am scanning first i2c port with just
Wire,begin(); it's giving first device address details ....
When i am scanning second i2c port with
Wire.setSDA(PB11);
Wire.setSCL(PB10);
Wire.begin(); it's giving asecond device address details ....
When i try to use simultaneously - only first device address is coming ..no second device address
Code: Select all
#include <Wire.h>
void setup() {
Serial.begin(9600);
Wire.begin();
TwoWire Wire2(PB11,PB10);
Wire2.begin();
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.println(address, HEX);
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");
else
Serial.println("done");
delay(5000); // wait 5 seconds for next scan
}