Código Marcos_Rev1.0

#include <EEPROM.h>

//Variáveis do Projeto
int Ans1,Ans2,Ans3,Ans4,Ans5,Ans6,Ans7,Ans8,Ans9;
int x ;
char buffer[18];

//Prototipação das funções
void splitString(char* data);
void setLED(char* data);

void setup(){
    Serial.begin(9600);
    pinMode(3,OUTPUT);
    pinMode(5,OUTPUT);
    pinMode(6,OUTPUT);
    pinMode(9,OUTPUT);
    pinMode(10,OUTPUT);
    pinMode(11,OUTPUT);
    pinMode(13,OUTPUT);

    //Para ler na inicialização
    x = EEPROM.read(0);
    Serial.print("Valor lido ");
    Serial.println(x);
}
void loop()
{
    if (Serial.available() > 0) {
        int index=0;
        delay(100); // permite o buffer encher
        int numChar = Serial.available();
    }
    if (numChar>15) {
        numChar=15;
    }
    while (numChar--) {
        buffer[index++] = Serial.read();
    }
    splitString(buffer);
}

//Subrotinas do projeto prototipar na declaração
//da seguinte maneira tipo nomeFuncao (parametros);
void splitString(char* data) {
    char* parameter;
    parameter = strtok (data, " ,");
    while (parameter != NULL) {
        setLED(parameter);
        parameter = strtok (NULL, " ,");
    }
    // Limpa os textos e o buffer serial
    for (int x=0; x<16; x++) {
        buffer[x]='\0';
    }
    Serial.flush();
}

void setLED(char* data) {

    int Ans1,Ans2,Ans3,Ans4,Ans5,Ans6,Ans7,Ans8,Ans9;

    if (data[0] == 'a') {
        Ans1 = strtol(data+1, NULL, 10);
        Ans1 = constrain(Ans1,0,9999);
    }

    if (data[0] == 'b') {
        Ans2 = strtol(data+1, NULL, 10);
        Ans2 = constrain(Ans2,0,9999);
    }

    if (data[0] == 'c') {
        int Ans3 = strtol(data+1, NULL, 10);
        Ans3 = constrain(Ans3,0,9999);
    }

    if (data[0] == 'd') {
        Ans4 = strtol(data+1, NULL, 10);
        Ans4 = constrain(Ans4,0,255);
        analogWrite(3, Ans4);
    }

    if (data[0] == 'e') {
        Ans5 = strtol(data+1, NULL, 10);
        Ans5 = constrain(Ans5,0,255);
        analogWrite(5, Ans5);
    }
    if (data[0] == 'f') {
        Ans6 = strtol(data+1, NULL, 10);
        Ans6 = constrain(Ans6,0,255);
        analogWrite(6, Ans6);
    }

    if (data[0] == 'g') {
        Ans7 = strtol(data+1, NULL, 10);
        Ans7 = constrain(Ans7,0,255);
        analogWrite(9, Ans7);
    }

    if (data[0] == 'h') {
        Ans8 = strtol(data+1, NULL, 10);
        Ans8 = constrain(Ans8,0,255);
        analogWrite(10, Ans8);
    }

    if (data[0] == 'i') {
        x = EEPROM.read(0);
        Ans9 = strtol(data+1, NULL, 10);
        Ans9 = constrain(Ans9,0,255);
        x = Ans9;
        EEPROM.write(0,x);
        analogWrite(11, x);
        Serial.println(x);
    }

    if(Ans9 == 255){
      digitalWrite(13,HIGH);
    }

    if(data[0] == 'x'){
        digitalWrite(13,LOW);
    }
}