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- #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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