Spark FSR

int tinkerDigitalRead(String pin);
int tinkerDigitalWrite(String command);
int tinkerAnalogRead(String pin);
int tinkerAnalogWrite(String command);

// We name pin D0 as led
int led = D0;
int fsr = A0;

//PUT YOUR VARIABLES HERE

void setup()
{
    Spark.function("digitalread", tinkerDigitalRead);
    Spark.function("digitalwrite", tinkerDigitalWrite);
    Spark.function("analogread", tinkerAnalogRead);
    Spark.function("analogwrite", tinkerAnalogWrite);

    //PUT YOUR SETUP CODE HERE
    // Initialize D0 pin as output
    pinMode(led, OUTPUT);
    pinMode(fsr, INPUT);

}

void loop()
{
    int reading = 0;

    // Keep reading the sensor value so when we make an API
    // call to read its value, we have the latest one
    reading = analogRead(A0);
    
    // Use map function to map between the fsr read and the led analogWrite value
    // http://arduino.cc/en/Reference/Map
    reading = map(reading, 0, 4094, -255, 0);
    reading = reading * -1;
    
    // To avoid blinking set values below 5 to 0
    if (reading < 5)
        reading = 0;
    
    analogWrite(led, reading);
}

int tinkerDigitalRead(String pin) {
    int pinNumber = pin.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(pin.startsWith("D")) {
        pinMode(pinNumber, INPUT_PULLDOWN);
        return digitalRead(pinNumber);}
    else if (pin.startsWith("A")){
        pinMode(pinNumber+10, INPUT_PULLDOWN);
        return digitalRead(pinNumber+10);}
    return -2;}

int tinkerDigitalWrite(String command){
    bool value = 0;
    int pinNumber = command.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(command.substring(3,7) == "HIGH") value = 1;
    else if(command.substring(3,6) == "LOW") value = 0;
    else return -2;
    if(command.startsWith("D")){
        pinMode(pinNumber, OUTPUT);
        digitalWrite(pinNumber, value);
        return 1;}
    else if(command.startsWith("A")){
        pinMode(pinNumber+10, OUTPUT);
        digitalWrite(pinNumber+10, value);
        return 1;}
    else return -3;}

int tinkerAnalogRead(String pin){
    int pinNumber = pin.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    if(pin.startsWith("D")){
        pinMode(pinNumber, INPUT);
        return analogRead(pinNumber);}
    else if (pin.startsWith("A")){
        pinMode(pinNumber+10, INPUT);
        return analogRead(pinNumber+10);}
    return -2;}

int tinkerAnalogWrite(String command){
    int pinNumber = command.charAt(1) - '0';
    if (pinNumber< 0 || pinNumber >7) return -1;
    String value = command.substring(3);
    if(command.startsWith("D")){
        pinMode(pinNumber, OUTPUT);
        analogWrite(pinNumber, value.toInt());
        return 1;}
    else if(command.startsWith("A")){
        pinMode(pinNumber+10, OUTPUT);
        analogWrite(pinNumber+10, value.toInt());
        return 1;}
    else return -2;}