Writing the Arduino sketch

We will now write the sketch to control the servo motor via BLE. This is the complete sketch for this part:

#include <SPI.h>
#include "Adafruit_BLE_UART.h"
#include <aREST.h>
#include <Servo.h>

// Lightweight mode
#define LIGHTWEIGHT 1

// Pins
#define ADAFRUITBLE_REQ 10
#define ADAFRUITBLE_RDY 2     // This should be pin 2 or 3
#define ADAFRUITBLE_RST 9
 
// Create servo object
Servo myservo;

// Create aREST instance
aREST rest = aREST();

// Servo position
int pos = 0;   

// BLE instance
Adafruit_BLE_UART BTLEserial = Adafruit_BLE_UART(ADAFRUITBLE_REQ, ADAFRUITBLE_RDY, ADAFRUITBLE_RST);

void setup()
{
   // Start Serial
  Serial.begin(115200);
  
  // Attaches the servo on pin 7 to the servo object
  myservo.attach(7);  
  
  // Start BLE
  BTLEserial.begin();
  
  // Give name and ID to device
  rest.set_id("001");
  rest.set_name("servo_control");
  
  // Expose function to API
  rest.function("servo",servoControl);
}
 
 
void loop()
{...