#include <Wire.h>
#define SENSOR_ADDR 0x6D // Default I2C address of the sensor
void setup() {
Wire.begin(); // Initialize I2C
Serial.begin(9600); // Initialize serial communication
}
void loop() {
uint32_t pressureRaw = readPressureRaw();
float pressure = convertPressure(pressureRaw);
int16_t temperatureRaw = readTemperatureRaw();
float temperature = convertTemperature(temperatureRaw);
Serial.print("Pressure: ");
Serial.print(pressure);
Serial.print(" Pa, Temperature: ");
Serial.print(temperature);
Serial.println(" C");
delay(1000); // Wait for 1 second
}
uint32_t readPressureRaw() {
Wire.beginTransmission(SENSOR_ADDR);
Wire.write(0x30); // Command register
Wire.write(0x0A); // Trigger combined pressure and temperature conversion
Wire.endTransmission();
delay(20); // Wait for conversion to complete (approx. 20ms)
Wire.beginTransmission(SENSOR_ADDR);
Wire.write(0x06); // Request pressure data
Wire.endTransmission();
Wire.requestFrom(SENSOR_ADDR, 3); // Request 3 bytes of pressure data
uint32_t pressure = Wire.read() << 16; // Pressure MSB
pressure |= Wire.read() << 8; // Pressure CSB
pressure |= Wire.read(); // Pressure LSB
return pressure;
}
float convertPressure(uint32_t pressureRaw) {
// Implement pressure conversion formula based on your pressure range and units
// Example for 0-100 kPa range:
const float k = 64.0; // Scaling factor
float pressure = (pressureRaw > 0x800000) ? ((pressureRaw - 0x1000000) / k) : (pressureRaw / k);
return pressure;
}
int16_t readTemperatureRaw() {
Wire.beginTransmission(SENSOR_ADDR);
Wire.write(0x09); // Request temperature data
Wire.endTransmission();
Wire.requestFrom(SENSOR_ADDR, 2); // Request 2 bytes of temperature data
int16_t temperature = Wire.read() << 8; // Temperature MSB
temperature |= Wire.read(); // Temperature LSB
return temperature;
}
float convertTemperature(int16_t temperatureRaw) {
// Implement temperature conversion formula
float temperature = (temperatureRaw > 0x8000) ? ((temperatureRaw - 0x10000) / 256.0) : (temperatureRaw / 256.0);
return temperature;
}
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