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can somebody help me to translate this Arduino code to Matlab?

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// DECLARACION DE VARIABLES PARA PINES
const int pinecho = 4;
const int pintrigger = 5;
const int pinled = 13;
// Motor A
int IN1 = 8;
int IN2 = 9;
// Motor B
int IN3 = 6;
int IN4 = 7;
int TIempo=0;
// VARIABLES PARA CALCULOS
unsigned int tiempo, distancia;
void setup() {
// PREPARAR LA COMUNICACION SERIAL
Serial.begin(9600);
// CONFIGURAR PINES DE ENTRADA Y SALIDA
pinMode(pinecho, INPUT); % DUDA
pinMode(pintrigger, OUTPUT);
pinMode(13, OUTPUT);
// inicializar la comunicación serial a 9600 bits por segundo:
Serial.begin(9600);
// Declaramos todos los pines como salidas
pinMode (IN1, OUTPUT);
pinMode (IN2, OUTPUT);
pinMode (IN3, OUTPUT);
pinMode (IN4, OUTPUT);
}
void loop() {
// ENVIAR PULSO DE DISPARO EN EL PIN "TRIGGER"
digitalWrite(pintrigger, LOW);
delayMicroseconds(2);
digitalWrite(pintrigger, HIGH);
// EL PULSO DURA AL MENOS 10 uS EN ESTADO ALTO
delayMicroseconds(2);
digitalWrite(pintrigger, LOW);
// MEDIR EL TIEMPO EN ESTADO ALTO DEL PIN "ECHO" EL PULSO ES PROPORCIONAL A LA DISTANCIA MEDIDA
tiempo = pulseIn(pinecho, HIGH);
// LA VELOCIDAD DEL SONIDO ES DE 340 M/S O 29 MICROSEGUNDOS POR CENTIMETRO
// DIVIDIMOS EL TIEMPO DEL PULSO ENTRE 58, TIEMPO QUE TARDA RECORRER IDA Y VUELTA UN CENTIMETRO LA ONDA SONORA
distancia = tiempo / 58;
// ENVIAR EL RESULTADO AL MONITOR SERIAL
Serial.print(distancia);
Serial.println(" cm");
delay(150);
// ENCENDER EL LED CUANDO SE CUMPLA CON CIERTA DISTANCIA
if (distancia <= 20) {
digitalWrite(13, HIGH);
delay(300);
} else {
digitalWrite(13, LOW);
//apagar el carro
void frenado ();
if (distancia <=20) {
digitalWrite(13, HIGH);
//Direccion motor A
digitalWrite (IN1, LOW);
digitalWrite (IN2, LOW);
//Direccion motor B
digitalWrite (IN3, LOW);
digitalWrite (IN4, LOW);
}
}
if (Serial.available()) {
char dato= Serial.read();
if(dato=='a')
{
Adelante();
TIempo=0;
}
else if(dato=='r')
{
Reversa();
TIempo=0;
}
else if(dato=='d')
{
Derecha();
TIempo=0;
}
else if(dato=='i')
{
Izquierda();
TIempo=0;
}
}
if(TIempo<1) // 100 cilcos de 1ms
{
TIempo=TIempo+1;
}
else //ya transcurrió 100ms (100ciclos)
{
Parar();
}
delay(1); //pasusa de 1ms por ciclo
}
void Adelante ()
{
//Direccion motor A
digitalWrite (IN1, LOW);
digitalWrite (IN2, HIGH);
//Direccion motor B
digitalWrite (IN3, LOW);
digitalWrite (IN4, HIGH);
}
void Parar ()
{
//Direccion motor A
digitalWrite (IN1, LOW);
digitalWrite (IN2, LOW);
//Direccion motor B
digitalWrite (IN3, LOW);
digitalWrite (IN4, LOW);
}
void Derecha ()
{
//Direccion motor A
digitalWrite (IN1, HIGH);
digitalWrite (IN2, LOW);
//Direccion motor B
digitalWrite (IN3, LOW);
digitalWrite (IN4, HIGH);
}
void Izquierda ()
{
//Direccion motor A
digitalWrite (IN1, LOW);
digitalWrite (IN2, HIGH);
//Direccion motor B
digitalWrite (IN3, HIGH);
digitalWrite (IN4, LOW);
}
void Reversa ()
{
//Direccion motor A
digitalWrite (IN1, HIGH);
digitalWrite (IN2, LOW);
//Direccion motor B
digitalWrite (IN3, HIGH);
digitalWrite (IN4, LOW);
}

Answers (1)

Pratik
Pratik on 11 Jun 2024
Hi Guillermo,
From what I can understand, the arduino code provided needs to be changed to MATLAB equivalent code.
The provided Arduino code involves digital I/O, serial communication, and timing functions to control motors and read from an ultrasonic sensor. Here's a MATLAB version that attempts to replicate the functionality, assuming the necessary support package is installed.
Please refer to the following code:
% MATLAB Code Equivalent
% Setup MATLAB and Arduino connection
a = arduino('COM3', 'Uno', 'Libraries', 'Ultrasonic'); % Change 'COM3' to your Arduino's port
% Define pin numbers
pinecho = 'D4';
pintrigger = 'D5';
pinled = 'D13';
% Motor A
IN1 = 'D8';
IN2 = 'D9';
% Motor B
IN3 = 'D6';
IN4 = 'D7';
% Initialize Ultrasonic sensor
ultrasonicSensor = ultrasonic(a, pintrigger, pinecho);
% Main loop
while true
% Send pulse
distancia = readDistance(ultrasonicSensor) * 100; % Convert meters to cm
% Display distance
fprintf('%f cm\n', distancia);
pause(0.15); % Delay
% Check distance to turn on LED
if distancia <= 20
writeDigitalPin(a, pinled, 1);
pause(0.3);
else
writeDigitalPin(a, pinled, 0);
end
% Read from serial (this part is tricky in MATLAB, assuming pseudo code for user input)
% MATLAB does not directly support reading from the serial monitor like the Arduino IDE does.
% You would need an external interface or a custom script to handle user inputs.
% For demonstration, let's assume a function getUserInput() that returns a character
dato = getUserInput(); % This is a placeholder for user input functionality
if dato == 'a'
Adelante(a, IN1, IN2, IN3, IN4);
elseif dato == 'r'
Reversa(a, IN1, IN2, IN3, IN4);
elseif dato == 'd'
Derecha(a, IN1, IN2, IN3, IN4);
elseif dato == 'i'
Izquierda(a, IN1, IN2, IN3, IN4);
end
pause(0.001); % Small delay
end
% Motor control functions
function Adelante(a, IN1, IN2, IN3, IN4)
writeDigitalPin(a, IN1, 0);
writeDigitalPin(a, IN2, 1);
writeDigitalPin(a, IN3, 0);
writeDigitalPin(a, IN4, 1);
end
function Parar(a, IN1, IN2, IN3, IN4)
writeDigitalPin(a, IN1, 0);
writeDigitalPin(a, IN2, 0);
writeDigitalPin(a, IN3, 0);
writeDigitalPin(a, IN4, 0);
end
function Derecha(a, IN1, IN2, IN3, IN4)
writeDigitalPin(a, IN1, 1);
writeDigitalPin(a, IN2, 0);
writeDigitalPin(a, IN3, 0);
writeDigitalPin(a, IN4, 1);
end
function Izquierda(a, IN1, IN2, IN3, IN4)
writeDigitalPin(a, IN1, 0);
writeDigitalPin(a, IN2, 1);
writeDigitalPin(a, IN3, 1);
writeDigitalPin(a, IN4, 0);
end
function Reversa(a, IN1, IN2, IN3, IN4)
writeDigitalPin(a, IN1, 1);
writeDigitalPin(a, IN2, 0);
writeDigitalPin(a, IN3, 1);
writeDigitalPin(a, IN4, 0);
end
% Placeholder for a function that simulates receiving user input
function input = getUserInput()
% Implement a way to get user input here
% This could be through a GUI, a file, or any other method
input = ''; % Return a character or string based on the input method
end
I hope this helps!

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