ARDUINO CHEAT SHEET
General info:
- Clock source: 16 MHz
- Equivalent to 62 nano seconds
Analog INPUTS (6):
- From A0 to A5
- 10bits resolution [0, 1023]
analogRead(port);
Digital I/O (14):
- Must declare port mode prior to using:
pinMode(pin,
INPUT);
pinMode(pin, OUTPUT);
val = digitalRead(pin);
digitalWrite(pin, val);
- The variable can take the values HIGH, LOW,
1 or 0;
Serial Transmission:
- RX for receiving
- TX for transmitting
- Transmission in TTL levels
Serial.begin(9600);
- This function should only be called once and
before any serial communication attempt. If
should be followed by a delay of 1000 ms to
avoid messing the arduino's programming.
Serial.print(string);
Serial.println(string);
Interruptions:
- Digital Interruptions on pins 2 and 3
attachInterrupt(int, fx, mode);
int – interruption number (0 or 1)
fx – interrupts attending function name
mode – FALLING / LOW / CHANGE /RISING
dettachInterrupt(int);
interrupts();
noInterrupts();
Enables/disables interruption service routines
Pulse Width Modulation (PWM~):
- Pin number 3, 5, 6, 9, 10, 11
- 8 bits [0, 256] resolution (between 0V e 5V)
- Only OUTPUT;
analogWrite();
Outras funções:
delay(mili);
delayMicroseconds(micro);
analogReference(source);
type: DEFAULT 5V, INTERNAL 1.1V,
EXTERNAL - AREF
tone(pin, freq, duration);
noTone();
“tone” can only generate a tone in a pin at a
time and might be a source of problems on pin 3
and 11 – use with caution.
pulseIn(pin, value)
- Waits for pin to switch to value and then
when it changes, outputs the time in
microseconds it was on that state.
millis() or micros();
- Time since the last reset in miliseconds or
µseconds. Millis() overflows after 50 days, micros()
oferflows after 70 minutes
Hardware: