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Posted: Sat Mar 23, 2019 11:20 amPosted: Tue Mar 26, 2019 2:44 am#include <Wire.h>
#define SCL_pin 0 // SCL at IO0 as example
#define SDA_pin 2 // SDA at IO2 as example
#define I2C_ADDR 0 // <- The address of your device goes here (see datasheet of the sensor).
void setup() {
delay (1000);
Wire.begin (SDA_pin, SCL_pin); // Init I²C
Wire.setClock (100000); // 100kHz (max 400kHz)
}
void writeSomeStuff() {
Wire.beginTransmission (I2C_ADDR); // Start writing
Wire.write (0); // Write whatever you need to write
Wire.write (0); // (Register addresses, data and stuff)
//...
Wire.endTransmission ();
}
byte readSomeStuff() {
Wire.beginTransmission (I2C_ADDR); // Start writing
Wire.write (0); // Write what you need to write to prepare the device to return data
Wire.endTransmission ();
Wire.requestFrom (I2C_ADDR, 1); // Start reading one byte
if (Wire.available () == 1)
return Wire.read (); // Read one byte
return 0; // something didn't work
}