Arduino nano BLE sense use gesture (APDS9960) and other I2C device with Wire lib

[ARMP125]

Got an Arduino nano BLE sense, using the light sensor.

This code working :

#include <Arduino_APDS9960.h>
void setup() {
    Serial.begin(9600);
    APDS.begin();
}

void loop() {
    if (APDS.colorAvailable()){
        int r, g, b, alpha;
        APDS.readColor(r, g, b, alpha);
        Serial.print("alpha: ");
        Serial.println(alpha);
    }
    delay(100);
}

I want to send alpha value to an other Arduino by I2C protocol.
After connecting the other board and verify the communication is valid, I get this code:

#include <Arduino_APDS9960.h>
#include <Wire.h>

void setup() {
    Serial.begin(9600);
    APDS.begin();
    Wire.begin(); // Begin Wire as master ...
}

void loop() {
    if (APDS.colorAvailable()){
        int r, g, b, alpha;
        APDS.readColor(r, g, b, alpha);
        Wire.beginTransmission(10);
        Wire.write(alpha);
        Wire.endTransmission();
    }
    delay(100);
}

With the above code, the condition APDS.colorAvailable() is never True.
I don't know why ... Probably because I instantiate the Wire library ?

[Klaus_K]

The APDS9960 library already initializes the I2C peripheral. Have a look into the Arduino_APDS9960 library. The two file are not very complicated. You can find it in the libraries folder inside your projects folder.

What happens when you comment this line: Wire.begin(); // Begin Wire as master ... ?

If that does not work you could change the order in setup() and see what happens then.