hi
I am a beginer on Arduino, I am writing a code to recieve strings from Serial port 1 and based on the recieved string take desisions with if statements but I got this error when I compiled it:
C:\Archivos de programa\Arduino\hardware\tools\avr/bin/avr-gcc" -Wall -Wextra -Os -flto -fuse-linker-plugin -Wl,--gc-sections,--relax -mmcu=atmega2560 -o "C:\DOCUME~1\Usuario\CONFIG~1\Temp\build825a98ccc64aba288ba8b5f13fe878b9.tmp/tombotv1.ino.elf" "C:\DOCUME~1\Usuario\CONFIG~1\Temp\build825a98ccc64aba288ba8b5f13fe878b9.tmp\sketch\tombotv1.ino.cpp.o" "C:\DOCUME~1\Usuario\CONFIG~1\Temp\build825a98ccc64aba288ba8b5f13fe878b9.tmp/core\core.a" "-LC:\DOCUME~1\Usuario\CONFIG~1\Temp\build825a98ccc64aba288ba8b5f13fe878b9.tmp" -lm
collect2.exe: error: ld returned 5 exit status
exit status 1
Error compilación en tarjeta Arduino/Genuino Mega or Mega 2560.
I tested deleting the if statements and compilation works fine, I found that I got the same error when I wrote under the if statement digitalWrite or call a function.
ARDUINO IDE: 1.6.10
PC with windows XP
Here it is the code:
//sketch to control 2 DC motors using L298N and reciving the data at serial 1.
int PWM_A = 2; //ENA
int MotorDer1 = 3; //IN1
int MotorDer2 = 4; //IN2
int MotorIzq1 = 5; //IN3
int MotorIzq2 = 6; //IN4
int PWM_B = 7; //ENB
int Luces=8;
String bufferString;
int velocidad = 150; // variable para velocidad
void setup() {
//configuracion pines control motores
pinMode(PWM_A, OUTPUT);
pinMode(MotorDer1, OUTPUT);
pinMode(MotorDer2, OUTPUT);
pinMode(MotorIzq1, OUTPUT);
pinMode(MotorIzq2, OUTPUT);
pinMode(PWM_B, OUTPUT);
// configuracion luces
pinMode(Luces,OUTPUT);
// Configuracion puerto serie
Serial.begin(9600);
Serial1.begin(9600);
}
void loop() {
// verifica si hay datos en el serial 1,almacena en una variable
if(Serial1.available() >0){
delay(20);
String bufferString="";
while (Serial1.available() >0){
bufferString +=(char)Serial1.read();
}
{Serial.print("recibi: ");
Serial.println(bufferString);}
if (bufferString == "FWD"){
go_fwd();
}
}
}
// subrutinas de giro,avance o retroceso
void go_fwd(){
// MDer sentido horario,MIzq antihorario
digitalWrite(MotorDer1,LOW);
digitalWrite(MotorDer2,HIGH);
digitalWrite(MotorIzq1,LOW);
digitalWrite(MotorIzq2,HIGH);
analogWrite(PWM_A,200);
analogWrite(PWM_B,200);
}
void reversa(){
// MDer antihorario,Mizq horario
digitalWrite(MotorDer1,HIGH);
digitalWrite(MotorDer2,LOW);
digitalWrite(MotorIzq1,HIGH);
digitalWrite(MotorIzq2,LOW);
analogWrite(PWM_A,200);
analogWrite(PWM_B,200);
}
void izquierda(){
// MDer y MIzq antihorario
digitalWrite(MotorDer1,LOW);
digitalWrite(MotorDer1,HIGH);
digitalWrite(MotorIzq1,HIGH);
digitalWrite(MotorIzq2,LOW);
analogWrite(PWM_A,200);
analogWrite(PWM_B,200);
}
void derecha(){
// MDer y MIzq sentido horario
digitalWrite(MotorDer1,HIGH);
digitalWrite(MotorDer2,LOW);
digitalWrite(MotorIzq1,LOW);
digitalWrite(MotorIzq2,HIGH);
analogWrite(PWM_A,200);
analogWrite(PWM_B,200);
}
void parar(){
digitalWrite(MotorDer1,LOW);
digitalWrite(MotorDer2,LOW);
digitalWrite(MotorIzq1,LOW);
digitalWrite(MotorIzq2,LOW);
analogWrite(PWM_A,200);
analogWrite(PWM_B,200);
}
void luces_on(){
digitalWrite(Luces,HIGH);
}
void luces_off() {
digitalWrite(Luces,LOW);
}
I will appreciate some help!!
Regards
