readUltrasonicDistance(id)

Reading ultrasonic sensor distance

Parameter

Parameters	Type	Description
id	unsigned char	ID number to be controlled, range 0 ~ 10

Return Values

Parameters	Type	Description
number	int	Ultrasonic distance, range 0 ~ 400cm

Example

Use the uKit Explore v2 board to display the distance read by ultrasonic sensor ID-1 every 400ms

#include "uKitExplore2.h"
void setup() {    
    Initialization();
}

void loop() {    
    Serial.println(readUltrasonicDistance(1));    
    delay(400);
}

Use the uKit Explore v2 board to read the ultrasonic sensor distance. When the distance is less than 5cm, set the on board LED to RED, and when the distance is more than 5cm, set the on board LED to GREEN.

#include "uKitExplore2.h"
volatile int item;
void setup() {    
    Initialization();     
    item = 0;
}

void loop() {    
    item=readUltrasonicDistance(1));    
    if(item>0 && item<5){        
        setRgbledColor(255,0,0);        
        delay(300);      
    }   
    else{        
        setRgbledColor(0,255,0);        
        delay(300);          
        }
}