mirror of https://github.com/noisymime/Arduino.git
New examples for basic control structures
This commit is contained in:
Tom Igoe
parent
ee810e8aa7
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/*
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For Loop Iteration
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Demonstrates the use of a for() loop and arrays.
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Lights multiple LEDs in sequence, then in reverse.
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The circuit:
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* LEDs from pins 2 through 7 to ground
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created 2006
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by David A. Mellis
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modified 17 Jan 2009
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by Tom Igoe
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http://www.arduino.cc/en/Tutorial/Loop
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*/
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int timer = 100; // The higher the number, the slower the timing.
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int ledPins[] = {
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2, 3, 4, 5, 6, 7 }; // an array of pin numbers to which LEDs are attached
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int pinCount = 6; // the number of pins (i.e. the length of the array)
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void setup() {
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int thisPin;
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// the array elements are numbered from 0 to (pinCount - 1).
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// use a for loop to initialize each pin as an output:
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for (int thisPin = 0; thisPin < thisPin; thisPin++) {
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pinMode(ledPins[thisPin], OUTPUT);
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}
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}
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void loop() {
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// loop from the lowest pin to the highest:
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for (int thisPin = 0; i < pinCount; thisPin++) {
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// turn the pin on:
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digitalWrite(ledPins[thisPin], HIGH);
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delay(timer);
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// turn the pin off:
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digitalWrite(ledPins[thisPin], LOW);
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}
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// loop from the highest pin to the lowest:
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for (thisPin = pinCount - 1; thisPin >= 0; thisPin--) {
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// turn the pin on:
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digitalWrite(ledPins[thisPin], HIGH);
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delay(timer);
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// turn the pin off:
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digitalWrite(ledPins[thisPin], LOW);
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}
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}
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53
build/shared/dist/examples/Control/IfStatementConditional/IfStatementConditional.pde
vendored
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53
build/shared/dist/examples/Control/IfStatementConditional/IfStatementConditional.pde
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/*
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Conditionals - If statement
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This example demonstrates the use of if() statements.
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It reads the state of a potentiometer (an analog input) and turns on an LED
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only if the LED goes above a certain threshold level. It prints the analog value
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regardless of the level.
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The circuit:
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* potentiometer connected to analog pin 0.
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Center pin of the potentiometer goes to the analog pin.
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side pins of the potentiometer go to +5V and ground
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* LED connected from digital pin 13 to ground
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* Note: On most Arduino boards, there is already an LED on the board
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connected to pin 13, so you don't need any extra components for this example.
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created 17 Jan 2009
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by Tom Igoe
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http://arduino.cc/en/Tutorial/
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*/
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// These constants won't change:
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const int analogPin = 0; // pin that the sensor is attached to
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const int ledPin = 13; // pin that the LED is attached to
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const int threshold = 400; // an arbitrary threshold level that's in the range of the analog input
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void setup() {
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// initialize the LED pin as an output:
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pinMode(LED, OUTPUT);
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// initialize serial communications:
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Serial.begin(9600);
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}
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void loop() {
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// read the value of the potentiometer:
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int analogValue = analogRead(analogPin);
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// if the analog value is high enough, turn on the LED:
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if (analogValue > threshold) {
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digitalWrite(ledPin, HIGH);
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}
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else {
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digitalWrite(ledPin,LOW);
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}
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// print the analog value:
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Serial.println(analogValue, DEC);
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}
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/*
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* Loop
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* by David A. Mellis
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*
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* Lights multiple LEDs in sequence, then in reverse. Demonstrates
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* the use of a for() loop and arrays.
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*
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* http://www.arduino.cc/en/Tutorial/Loop
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*/
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int timer = 100; // The higher the number, the slower the timing.
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int pins[] = { 2, 3, 4, 5, 6, 7 }; // an array of pin numbers
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int num_pins = 6; // the number of pins (i.e. the length of the array)
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void setup()
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{
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int i;
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for (i = 0; i < num_pins; i++) // the array elements are numbered from 0 to num_pins - 1
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pinMode(pins[i], OUTPUT); // set each pin as an output
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}
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void loop()
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{
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int i;
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for (i = 0; i < num_pins; i++) { // loop through each pin...
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digitalWrite(pins[i], HIGH); // turning it on,
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delay(timer); // pausing,
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digitalWrite(pins[i], LOW); // and turning it off.
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}
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for (i = num_pins - 1; i >= 0; i--) {
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digitalWrite(pins[i], HIGH);
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delay(timer);
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digitalWrite(pins[i], LOW);
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}
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}
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75
build/shared/dist/examples/Control/WhileStatementConditional/WhileStatementConditional.pde
vendored
Normal file
75
build/shared/dist/examples/Control/WhileStatementConditional/WhileStatementConditional.pde
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/*
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Conditionals - while statement
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This example demonstrates the use of while() statements.
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It reads the state of a potentiometer (an analog input) and blinks an LED
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while the LED remains above a certain threshold level. It prints the analog value
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only if it's below the threshold.
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This example uses principles explained in the BlinkWithoutDelay example as well.
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The circuit:
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* potentiometer connected to analog pin 0.
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Center pin of the potentiometer goes to the analog pin.
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side pins of the potentiometer go to +5V and ground
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* LED connected from digital pin 13 to ground
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* Note: On most Arduino boards, there is already an LED on the board
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connected to pin 13, so you don't need any extra components for this example.
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created 17 Jan 2009
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by Tom Igoe
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*/
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// These constants won't change:
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const int analogPin = 0; // pin that the sensor is attached to
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const int ledPin = 13; // pin that the LED is attached to
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const int threshold = 400; // an arbitrary threshold level that's in the range of the analog input
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const int blinkDelay = 500; // how long to hold between changes of the LED
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// these variables will change:
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int ledState = LOW; // the state of the LED
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int lastBlinkTime = 0; // last time the LED changed
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int analogValue; // variable to hold the value of the analog input
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void setup() {
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// initialize the LED pin as an output:
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pinMode(ledPin, OUTPUT);
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// initialize serial communications:
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Serial.begin(9600);
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}
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void loop() {
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// read the value of the potentiometer:
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analogValue = analogRead(analogPin);
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// if the analog value is high enough, turn on the LED:
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while (analogValue > threshold) {
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// if enough time has passed since the last change of the LED,
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// then change it. Note you're using the technique from BlinkWithoutDelay
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// here so that the while loop doesn't delay the rest of the program:
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if (millis() - lastBlinkTime > blinkDelay) {
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// if the ledState is high, this makes it low, and vice versa:
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ledState = !ledState;
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digitalWrite(ledPin, ledState);
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// save the last time the LED changed in a variable:
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lastBlinkTime = millis();
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}
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// while you're in the while loop, you have to read the
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// input again:
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analogValue = analogRead(analogPin);
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}
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// if you're below the threshold, print the analog value:
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Serial.println(analogValue, DEC);
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// turn the LED off:
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digitalWrite(ledPin, LOW);
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}
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/*
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Conditionals - while statement
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This example demonstrates the use of while() statements.
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It reads the state of a potentiometer (an analog input) and blinks an LED
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while the LED remains above a certain threshold level. It prints the analog value
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only if it's below the threshold.
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This example uses principles explained in the BlinkWithoutDelay example as well.
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The circuit:
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* potentiometer connected to analog pin 0.
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Center pin of the potentiometer goes to the analog pin.
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side pins of the potentiometer go to +5V and ground
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* LED connected from digital pin 13 to ground
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* Note: On most Arduino boards, there is already an LED on the board
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connected to pin 13, so you don't need any extra components for this example.
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created 17 Jan 2009
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by Tom Igoe
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*/
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#define ledPin 13 // the pin for the LED
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#define analogPin 0 // the analog pin that the potentiometer is attached to
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#include "WProgram.h"
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void setup();
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void loop();
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int threshold = 400; // an arbitrary threshold level that's in the range of the analog input
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int ledState = LOW; // the state of the LED
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int lastBlinkTime = 0; // last time the LED changed
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int blinkDelay = 500; // how long to hold between changes of the LED
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int analogValue; // variable to hold the value of the analog input
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void setup() {
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// initialize the LED pin as an output:
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pinMode(ledPin, OUTPUT);
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// initialize serial communications:
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Serial.begin(9600);
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}
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void loop() {
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// read the value of the potentiometer:
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analogValue = analogRead(analogPin);
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// if the analog value is high enough, turn on the LED:
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while (analogValue > threshold) {
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// if enough time has passed since the last change of the LED,
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// then change it. Note you're using the technique from BlinkWithoutDelay
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// here so that the while loop doesn't delay the rest of the program:
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if (millis() - lastBlinkTime > blinkDelay) {
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// if the ledState is high, this makes it low, and vice versa:
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ledState = !ledState;
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digitalWrite(ledPin, ledState);
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// save the last time the LED changed in a variable:
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lastBlinkTime = millis();
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}
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// while you're in the while loop, you have to read the
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// input again:
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analogValue = analogRead(analogPin);
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}
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// if you're below the threshold, print the analog value:
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Serial.println(analogValue, DEC);
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// turn the LED off:
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digitalWrite(ledPin, LOW);
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}
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int main(void)
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{
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init();
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setup();
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for (;;)
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loop();
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return 0;
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}
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:00000001FF
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BIN
build/shared/dist/examples/Control/WhileStatementConditional/applet/WhileStatementConditional.elf
vendored
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BIN
build/shared/dist/examples/Control/WhileStatementConditional/applet/WhileStatementConditional.elf
vendored
Executable file
Binary file not shown.
155
build/shared/dist/examples/Control/WhileStatementConditional/applet/WhileStatementConditional.hex
vendored
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155
build/shared/dist/examples/Control/WhileStatementConditional/applet/WhileStatementConditional.hex
vendored
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
:1009700080959095BC01CD010895EE0FFF1F059065
|
||||
:0A098000F491E02D0994F894FFCFE4
|
||||
:0C098A009001F40101000000009C01003D
|
||||
:00000001FF
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
/*
|
||||
Conditionals - while statement
|
||||
|
||||
This example demonstrates the use of while() statements.
|
||||
|
||||
It reads the state of a potentiometer (an analog input) and blinks an LED
|
||||
while the LED remains above a certain threshold level. It prints the analog value
|
||||
only if it's below the threshold.
|
||||
|
||||
This example uses principles explained in the BlinkWithoutDelay example as well.
|
||||
|
||||
The circuit:
|
||||
* potentiometer connected to analog pin 0.
|
||||
Center pin of the potentiometer goes to the analog pin.
|
||||
side pins of the potentiometer go to +5V and ground
|
||||
* LED connected from digital pin 13 to ground
|
||||
|
||||
* Note: On most Arduino boards, there is already an LED on the board
|
||||
connected to pin 13, so you don't need any extra components for this example.
|
||||
|
||||
created 17 Jan 2009
|
||||
by Tom Igoe
|
||||
|
||||
*/
|
||||
|
||||
#define ledPin 13 // the pin for the LED
|
||||
#define analogPin 0 // the analog pin that the potentiometer is attached to
|
||||
|
||||
int threshold = 400; // an arbitrary threshold level that's in the range of the analog input
|
||||
int ledState = LOW; // the state of the LED
|
||||
int lastBlinkTime = 0; // last time the LED changed
|
||||
int blinkDelay = 500; // how long to hold between changes of the LED
|
||||
int analogValue; // variable to hold the value of the analog input
|
||||
void setup() {
|
||||
// initialize the LED pin as an output:
|
||||
pinMode(ledPin, OUTPUT);
|
||||
// initialize serial communications:
|
||||
Serial.begin(9600);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// read the value of the potentiometer:
|
||||
analogValue = analogRead(analogPin);
|
||||
|
||||
// if the analog value is high enough, turn on the LED:
|
||||
while (analogValue > threshold) {
|
||||
// if enough time has passed since the last change of the LED,
|
||||
// then change it. Note you're using the technique from BlinkWithoutDelay
|
||||
// here so that the while loop doesn't delay the rest of the program:
|
||||
|
||||
if (millis() - lastBlinkTime > blinkDelay) {
|
||||
// if the ledState is high, this makes it low, and vice versa:
|
||||
ledState = !ledState;
|
||||
digitalWrite(ledPin, ledState);
|
||||
|
||||
// save the last time the LED changed in a variable:
|
||||
lastBlinkTime = millis();
|
||||
}
|
||||
// while you're in the while loop, you have to read the
|
||||
// input again:
|
||||
analogValue = analogRead(analogPin);
|
||||
}
|
||||
|
||||
// if you're below the threshold, print the analog value:
|
||||
Serial.println(analogValue, DEC);
|
||||
// turn the LED off:
|
||||
digitalWrite(ledPin, LOW);
|
||||
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue