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microrobotics

XGZP6857D

Apr 25th, 2024
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  1. #include <Wire.h>
  2.  
  3. #define SENSOR_ADDR 0x6D // Default I2C address of the sensor
  4.  
  5. void setup() {
  6.   Wire.begin(); // Initialize I2C
  7.   Serial.begin(9600); // Initialize serial communication
  8. }
  9.  
  10. void loop() {
  11.   uint32_t pressureRaw = readPressureRaw();
  12.   float pressure = convertPressure(pressureRaw);
  13.   int16_t temperatureRaw = readTemperatureRaw();
  14.   float temperature = convertTemperature(temperatureRaw);
  15.  
  16.   Serial.print("Pressure: ");
  17.   Serial.print(pressure);
  18.   Serial.print(" Pa, Temperature: ");
  19.   Serial.print(temperature);
  20.   Serial.println(" C");
  21.  
  22.   delay(1000); // Wait for 1 second
  23. }
  24.  
  25. uint32_t readPressureRaw() {
  26.   Wire.beginTransmission(SENSOR_ADDR);
  27.   Wire.write(0x30); // Command register
  28.   Wire.write(0x0A); // Trigger combined pressure and temperature conversion
  29.   Wire.endTransmission();
  30.  
  31.   delay(20); // Wait for conversion to complete (approx. 20ms)
  32.  
  33.   Wire.beginTransmission(SENSOR_ADDR);
  34.   Wire.write(0x06); // Request pressure data
  35.   Wire.endTransmission();
  36.  
  37.   Wire.requestFrom(SENSOR_ADDR, 3); // Request 3 bytes of pressure data
  38.   uint32_t pressure = Wire.read() << 16; // Pressure MSB
  39.   pressure |= Wire.read() << 8; // Pressure CSB
  40.   pressure |= Wire.read(); // Pressure LSB
  41.  
  42.   return pressure;
  43. }
  44.  
  45. float convertPressure(uint32_t pressureRaw) {
  46.   // Implement pressure conversion formula based on your pressure range and units
  47.   // Example for 0-100 kPa range:
  48.   const float k = 64.0; // Scaling factor
  49.   float pressure = (pressureRaw > 0x800000) ? ((pressureRaw - 0x1000000) / k) : (pressureRaw / k);
  50.   return pressure;
  51. }
  52.  
  53. int16_t readTemperatureRaw() {
  54.   Wire.beginTransmission(SENSOR_ADDR);
  55.   Wire.write(0x09); // Request temperature data
  56.   Wire.endTransmission();
  57.  
  58.   Wire.requestFrom(SENSOR_ADDR, 2); // Request 2 bytes of temperature data
  59.   int16_t temperature = Wire.read() << 8; // Temperature MSB
  60.   temperature |= Wire.read(); // Temperature LSB
  61.  
  62.   return temperature;
  63. }
  64.  
  65. float convertTemperature(int16_t temperatureRaw) {
  66.   // Implement temperature conversion formula
  67.   float temperature = (temperatureRaw > 0x8000) ? ((temperatureRaw - 0x10000) / 256.0) : (temperatureRaw / 256.0);
  68.   return temperature;
  69. }
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