Arduino Uno sketch on Leonardo.

Projects Programming
1

Hi, I am tring to put the sketch below onto arduino leonardo to control 4 wheel drive car with wifi camera. The tutorial where i recieved code was for arduino uno. I am aware of a change in serial to serial1 or something along these lines with leonardo. However I am completely new to this and lost as to how to adapt this code for leonardo. I have the project built now and need to get working this week. Could anyone help me get this working on Leonardo please?

Elecrow_WIFI_Car.ino (2.94 KB)

2

You should be fine if you just change all instances of Serial in the code to Serial1.

3

Thanks very much for the reply, I was thinking this but doesnt seem to work. Should I change any place it says serial to serial1. For example "byte serialIn = 0;" to "byte serial1In = 0;" or just where serial is on its own like " Serial.begin(9600); " to " Serial1.begin(9600);"
Sorry for the possibly stupid questions I have been thrown in the deep end here.

4

I did not look at the code, but it should only be Serial.begin, Serial.read and Serial.print/write.

5

No you only need to change the name of the Serial instance:

#include <Servo.h>    
int MotorLeft1 =8;   //IN1
int MotorLeft2 = 11; //IN2
int MotorRight1 = 12;  //IN3
int MotorRight2 = 13;  //IN4
int EA = 9;    //enable out1
int EB = 10;   //enable out2

//Status of four motor
uint8_t MotorLeft1Status = LOW;
uint8_t MotorLeft2Status = LOW;
uint8_t MotorRight1Status = LOW;
uint8_t MotorRight2Status = LOW;

Servo servoX;
Servo servoY;

byte serialIn = 0;
byte commandAvailable = false;
String strReceived = "";


//current speed of motor
byte leftspeed = 0;
byte rightspeed = 0;


void setup()
{

	pinMode(MotorLeft1, OUTPUT);
	pinMode(MotorLeft2, OUTPUT);
	pinMode(MotorRight1, OUTPUT);
	pinMode(MotorRight2, OUTPUT);
	Serial1.begin(9600);
}


void loop()
{
	getSerialLine();
	if (commandAvailable) {
		processCommand(strReceived);
		strReceived = "";
		commandAvailable = false;
	}
}


void getSerialLine()
{
	while (serialIn != '\r')
	{
		if (!(Serial1.available() > 0))
		{
			return;
		}

		serialIn = Serial1.read();
		if (serialIn != '\r') {
			if (serialIn != '\n'){
				char a = char(serialIn);
				strReceived += a;
			}
		}
	}
	if (serialIn == '\r') {
		commandAvailable = true;
		serialIn = 0;
	}

}
void processCommand(String input)
{
	byte iscommand = true;
	int val;
	if (command == "MD_Qian")
	{
		advance();
	}
	else if (command == "MD_Hou")
	{
		back();
	}
	else if (command == "MD_Zuo")
	{
		left();
	}
	else if (command == "MD_You")
	{
		right();
	}
	else if (command == "MD_Ting")
	{
		Stop();
	}
	else if (command == "MD_SD")
	{
		val = getValue(input, ' ', 1).toInt();
		leftspeed = val;
		val = getValue(input, ' ', 2).toInt();
		rightspeed = val;
	}
	else if (command == "DJ_CS")
	{
		

void advance(void)
{
	MotorLeft1Status = LOW;
	MotorLeft2Status = HIGH;
	MotorRight1Status = LOW;
	MotorRight2Status = HIGH;
	SetEN();
}
void back(void)
{
	MotorLeft1Status = HIGH;
	MotorLeft2Status = LOW;
	MotorRight1Status = HIGH;
	MotorRight2Status = LOW;
	SetEN();
}
void right(void)
{
	MotorLeft1Status = LOW;
	MotorLeft2Status = HIGH;
	MotorRight1Status = HIGH;
	MotorRight2Status = LOW;
	SetEN();
}
void left(void)
{
	MotorLeft1Status = HIGH;
	MotorLeft2Status = LOW;
	MotorRight1Status = LOW;
	MotorRight2Status = HIGH;
	SetEN();
}
void Stop(void)
{
	leftspeed = 0;
	rightspeed = 0;
	MotorLeft1Status = LOW;
	MotorLeft2Status = LOW;
	MotorRight1Status = LOW;
	MotorRight2Status = LOW;
	SetEN();
}

void SetEN(){
	analogWrite(EA, leftspeed);
	analogWrite(EB, rightspeed);
	digitalWrite(MotorLeft1, MotorLeft1Status);
	digitalWrite(MotorLeft2, MotorLeft2Status);
	digitalWrite(MotorRight1, MotorRight1Status);
	digitalWrite(MotorRight2, MotorRight2Status);
}

void SendStatus(){

	String out = "";
	out += MotorLeft1Status;
	out += ",";
	out += MotorLeft2Status;
	out += ",";
	out += MotorRight1Status;
	out += ",";
	out += MotorRight2Status;
	out += ",";
	out += leftspeed;
	out += ",";
	out += rightspeed;
	out += ",";
	out += servoXPoint;
	out += ",";
	out += servoYPoint;
	SendMessage(out);
}
void SendMessage(String data){
	Serial1.println(data);
}