I2C trouble reading

#1

Hi,
i have a problem about reading an i2c sensor connected to a wireless stick lite board.
The sensor is a capacitive sensor for measuring soil humidity. It is connected to the default i2c pins (21 and 22).
I have inserted pull-up resistors as recommended by the datasheet. The sensor measures 3 parameters: temperature, permitivity and electric conductivity. The temperature is correctly measured while the other 2 values are read wrongs.
The sensor works correctly if connected on other devices (arduino based). What can the incorrect reading of the parameters depend on?
Thank you

#2

Can you show your code?
Because the 21 pin is used to control the power.

#3

Src code:

#include “i2cArduino.h”

SVCS3 vcs;

void setup() {
Serial.begin(115200);
vcs.init(0x64);

}

void loop() {
vcs.newReading(); // start sensor reading
delay(100); //let sensor read data

//getting values one by one
float e25 = vcs.getE25();
float ec = vcs.getEC();
float temp = vcs.getTemp();
float vwc = vcs.getVWC();

Serial.println("-----");
Serial.print(“e25”);
Serial.print("=");
Serial.println(e25);
Serial.print(“ec”);
Serial.print("=");
Serial.println(ec);
Serial.print(“temp”);
Serial.print("=");
Serial.println(temp);
Serial.print(“vwc”);
Serial.print("=");
Serial.println(vwc);
delay(1000);
}

sensor library at https://github.com/tinovi/i2cArduino

#4

image
I think that’s it.

#5

What? the baut rate too high?

#6

is in your sketch.
Quency-D uses an other IIC address 0x63

#7

The default address is 0x63 but has been changed to 0x64 in order to read 2 sensors on the same bus.
the behavior is the same for a device with address 0x63