/*******************************************************************************
*
*    Projeto 27 – Criando cores em um LED RGB utilizando 1 o teclado do PC
*                   http://squids.com.br/arduino
*
*******************************************************************************/
 
// Define as conexões para cada cor do RGB
const int RedPin = 3;
const int GreenPin = 5;
const int BluePin = 6;

char buffer[18];

void setup() {
Serial.begin(9600);
Serial.flush();
Serial.println("Digite valores para r, g e b:");
pinMode(RedPin, OUTPUT);
pinMode(GreenPin, OUTPUT);
pinMode(BluePin, OUTPUT);
}

void loop() {
if (Serial.available() > 0) {
int index=0;
delay(100); // deixe o buffer encher
int numChar = Serial.available();
if (numChar>15) {
numChar=15;
}
while (numChar--) {
buffer[index++] = Serial.read();
}
splitString(buffer);
}
}
void splitString(char* data) {
Serial.println("");
Serial.print("Entrada: ");
Serial.println(data);
char* parameter;
parameter = strtok (data, " ,");
while (parameter != NULL) {
setLED(parameter);
parameter = strtok (NULL, " ,");
}
// Limpa o texto e os buffers seriais
for (int x=0; x<16; x++) {
buffer[x]='\0';
}
Serial.flush();
}
void setLED(char* data) {
if ((data[0] == 'r') || (data[0] == 'R')) {
int Ans = strtol(data+1, NULL, 10);
Ans = constrain(Ans,0,255);
analogWrite(RedPin, Ans);
Serial.print("Vermelho configurado para: ");
Serial.println(Ans);
}
if ((data[0] == 'g') || (data[0] == 'G')) {
int Ans = strtol(data+1, NULL, 10);
Ans = constrain(Ans,0,255);
analogWrite(GreenPin, Ans);
Serial.print("Verde configurado para: ");
Serial.println(Ans);
}
if ((data[0] == 'b') || (data[0] == 'B')) {
int Ans = strtol(data+1, NULL, 10);
Ans = constrain(Ans,0,255);
analogWrite(BluePin, Ans);
Serial.print("Azul configurado para: ");
Serial.println(Ans);
}
}