Hi, I want to use 3 VL53L1X lidar sensors so need to change the address of two of them, has anyone else done this?
I have found some code for arduino used for setting the i2c addresses , is it as simple as using that code and then they will share the i2c bus without issues?
I’m assuming that I only need to change two of the three sensors addresses and can leave the third on the default address right?
Thanks, Steve.
Here’s the arduino code I have found:
#include <VL53L1X.h> //Download this library from https://github.com/pololu/vl53l1x-arduino
#include <Wire.h>
VL53L1X sensor_A; //Create the sensor object
VL53L1X sensor_B; //Create the sensor object
int startTime = millis(); //used for our timing loop
int mInterval = 100; //refresh rate of 10hz
#define XSHUT_A 9
#define XSHUT_B 10
void setup() {
Serial.begin(57600);
Wire.begin(); //Setup your I2C interface
Wire.setClock(400000); // use 400 kHz I2C
//Set the pin mode to output
pinMode(XSHUT_A ,OUTPUT);
pinMode(XSHUT_B ,OUTPUT);
//Turn all TOF's off
digitalWrite(XSHUT_A, LOW);
digitalWrite(XSHUT_B, LOW);
//-----------------------------------------------------------------
//FIRST WE WILL CONFIGURE AND SETUP SENSOR_A
//-----------------------------------------------------------------
delay(50);
digitalWrite(XSHUT_A, HIGH); //Turn sensor_A on
delay(50);
sensor_A.setTimeout(500); //Set the sensors timeout
if (!sensor_A.init())//try to initilise the sensor
{
//Sensor does not respond within the timeout time
Serial.println("Sensor_A is not responding, check your wiring");
}
else
{
sensor_A.setAddress(42); //Set the sensors I2C address
sensor_A.setDistanceMode(VL53L1X::Long); //Set the sensor to maximum range of 4 meters
sensor_A.setMeasurementTimingBudget(40000); //Set its timing budget in microseconds longer timing budgets will give more accurate measurements
sensor_A.startContinuous(45); //Sets the interval where a measurement can be requested in milliseconds
}
//-----------------------------------------------------------------
//NOW CONFIGURE AND SETUP SENSOR_B
//-----------------------------------------------------------------
delay(50);
digitalWrite(XSHUT_B, HIGH); //Turn sensor_A on
delay(50);
sensor_B.setTimeout(500); //Set the sensors timeout
if (!sensor_B.init())//try to initilise the sensor
{
//Sensor does not respond within the timeout time
Serial.println("Sensor_A is not responding, check your wiring");
}
else
{
sensor_B.setAddress(43); //Set the sensors I2C address
sensor_B.setDistanceMode(VL53L1X::Long); //Set the sensor to maximum range of 4 meters
sensor_B.setMeasurementTimingBudget(40000); //Set its timing budget in microseconds longer timing budgets will give more accurate measurements
sensor_B.startContinuous(45); //Sets the interval where a measurement can be requested in milliseconds
}
}
void loop() {
//We have to be careful here. If we request a measurement before the measurement has been taken your
//code will be blovked until the measurement is complete. In order to stop this from happening we
//must ensure that time between measurement requests is greater than the timing budget and the argument
//given in the startContinuous() function. In our case our measurement time must be greater than 50mS.
if((millis()- startTime) > mInterval)
{
Serial.print("Sensor_A Reading: ");
Serial.println(sensor_A.read()); //Get a reading in millimeters
Serial.print("Sensor_B Reading: ");
Serial.println(sensor_B.read()); //Get a reading in millimeters
startTime = millis();
}
}
