lps22hb i2c interface(erorrs)

Hello, 

We want to operate the LPS22HB pressure sensor with the i2c protocol. The pin legs of the sensor are connected to the SCL - SDA 4.7k ohm pull-up resistors. Sa0/GND   Csi / 3.3  RES / GND. This is how connections are made. This way we can't get data from the sensor. What is the reason of this?

 

@Eleon BORLINI 

@Peter BENSCH 

[Foued_KH]

Hello @Legacy member , 

First please make sur that your are using the correct address. You can use an oscilloscope to check SDA and SCL behavior.
Could you share the code ? 

Foued

@Foued_KH  Thankk youu <3

All settings are used by default. The code is the library ready code written in arduino. Address 5C and all of its derivatives have been tested by changing the test from within the library. The interrupt pin is not connected anywhere, any problem occurs?

#include <Arduino_LPS22HB.h>

void setup() {

  Serial.begin(9600);

  while (!Serial);

  if (!BARO.begin()) {

    Serial.println("Failed to initialize pressure sensor!");

    while (1);

  }

}

void loop() {

  // read the sensor value

  float pressure = BARO.readPressure();

  // print the sensor value

  Serial.print("Pressure = ");

  Serial.print(pressure);

  Serial.println(" kPa");

  float temperature = BARO.readTemperature();

  // print the sensor value

  Serial.print("Temperature = ");

  Serial.print(temperature);

  Serial.println(" C");

  // print an empty line

  Serial.println();

  // wait 1 second to print again

  delay(1000);

}

@KHALSI_Foued

[Foued_KH]

For I2C communication, 2 pins are required to interface, as this :
VDD to 3.3V DC
SCL to A5
SDA to A4
GND to common groud

Foued

[Sinoplu57]

@KHALSI_Foued 

I've already done what you said, I can't get it to work.

 

[Federica Bossi]

Hi,

The I2C address for LPS22HB is 0xBA or 0xB8 according with SA0  (datasheet page 26).

[Sinoplu57]

We tried the solutions you suggested but we can't get a solution. Do you have any other suggestions?

[Federica Bossi]

Hi @Sinoplu57 ,

In alternative you can try to reduce the pull up resistances, for example you can use 2.2kOhm.

Let me know if this solves.