Paso 3: programa de
He hecho esto porque está sólidamente escrito código y no tiene ningún sentido en reinventar la rueda para fines de aprendizaje.
Aquí está:
/* /* RCtime * Duplicates the functionality of the Basic Stamp's RCtime * Allows digital pins to be used to read resistive analog sensors * One advantage of this technique is that is can be used to read very wide ranging inputs. * (The equivalent of 16 or 18 bit A/D) */ int sensorPin = 4; // 220 or 1k resistor connected to this pin long result = 0; void setup() // run once, when the sketch starts { Serial.begin(9600); Serial.println("start"); // a personal quirk } void loop() // run over and over again { Serial.println( RCtime(sensorPin) ); delay(10); } long RCtime(int sensPin){ long result = 0; pinMode(sensPin, OUTPUT); // make pin OUTPUT digitalWrite(sensPin, HIGH); // make pin HIGH to discharge capacitor - study the schematic delay(1); // wait a ms to make sure cap is discharged pinMode(sensPin, INPUT); // turn pin into an input and time till pin goes low digitalWrite(sensPin, LOW); // turn pullups off - or it won't work while(digitalRead(sensPin)){ // wait for pin to go low result++; } return result; // report results }
Simplemente copie este código en el entorno de desarrollo y subir a la Junta.