Esc programming problem

Projects Programming
8

well so i am sorry but my esc is generic and so i don't know which one it is, though i think it should be simonk since my earlier was bought from the same shop. but the problem with this esc still persists
I found this code on git

#include <Servo.h>
// ---------------------------------------------------------------------------
// Customize here pulse lengths as needed
#define MIN_PULSE_LENGTH 1000 // Minimum pulse length in µs
#define MAX_PULSE_LENGTH 2000 // Maximum pulse length in µs
// ---------------------------------------------------------------------------
Servo motA, motB, motC, motD;
char data;
// ---------------------------------------------------------------------------

/**
 * Initialisation routine
 */
void setup() {
    Serial.begin(9600);
    
    motA.attach(4, MIN_PULSE_LENGTH, MAX_PULSE_LENGTH);
    motB.attach(5, MIN_PULSE_LENGTH, MAX_PULSE_LENGTH);
    motC.attach(6, MIN_PULSE_LENGTH, MAX_PULSE_LENGTH);
    motD.attach(7, MIN_PULSE_LENGTH, MAX_PULSE_LENGTH);
    
    displayInstructions();
}

/**
 * Main function
 */
void loop() {
    if (Serial.available()) {
        data = Serial.read();

        switch (data) {
            // 0
            case 48 : Serial.println("Sending minimum throttle");
                      motA.writeMicroseconds(MIN_PULSE_LENGTH);
                      motB.writeMicroseconds(MIN_PULSE_LENGTH);
                      motC.writeMicroseconds(MIN_PULSE_LENGTH);
                      motD.writeMicroseconds(MIN_PULSE_LENGTH);
            break;

            // 1
            case 49 : Serial.println("Sending maximum throttle");
                      motA.writeMicroseconds(MAX_PULSE_LENGTH);
                      motB.writeMicroseconds(MAX_PULSE_LENGTH);
                      motC.writeMicroseconds(MAX_PULSE_LENGTH);
                      motD.writeMicroseconds(MAX_PULSE_LENGTH);
            break;

            // 2
            case 50 : Serial.print("Running test in 3");
                      delay(1000);
                      Serial.print(" 2");
                      delay(1000);
                      Serial.println(" 1...");
                      delay(1000);
                      test();
            break;
        }
    }
    

}

/**
 * Test function: send min throttle to max throttle to each ESC.
 */
void test()
{
    for (int i = MIN_PULSE_LENGTH; i <= MAX_PULSE_LENGTH; i += 5) {
        Serial.print("Pulse length = ");
        Serial.println(i);
        
        motA.writeMicroseconds(i);
        motB.writeMicroseconds(i);
        motC.writeMicroseconds(i);
        motD.writeMicroseconds(i);
        
        delay(200);
    }

    Serial.println("STOP");
    motA.writeMicroseconds(MIN_PULSE_LENGTH);
    motB.writeMicroseconds(MIN_PULSE_LENGTH);
    motC.writeMicroseconds(MIN_PULSE_LENGTH);
    motD.writeMicroseconds(MIN_PULSE_LENGTH);
}

/**
 * Displays instructions to user
 */
void displayInstructions()
{  
    Serial.println("READY - PLEASE SEND INSTRUCTIONS AS FOLLOWING :");
    Serial.println("\t0 : Send min throttle");
    Serial.println("\t1 : Send max throttle");
    Serial.println("\t2 : Run test function\n");
}

with this my earlier used to work perfectly but this esc doesn't since
its starts rotating the motor when the pulse length is 1500 and doesn't gives max speed at 2000 in run test function since i could attain that with send max throttle