/*
Arrays
Demonstrates the use of an array to hold pin numbers in order to iterate over
the pins in a sequence. Lights multiple LEDs in sequence, then in reverse.
Unlike the For Loop tutorial, where the pins have to be contiguous, here the
pins can be in any random order.
The circuit:
- LEDs from pins 2 through 7 to ground
created 2006
by David A. Mellis
modified 30 Aug 2011
by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Array
*/
int timer = 100; // The higher the number, the slower the timing.
int ledPins[] = {
2, 3, 4, 5, 6, 7,8,9
}; // an array of pin numbers to which LEDs are attached
int pinCount = 8; // the number of pins (i.e. the length of the array)
void setup()
{
// the array elements are numbered from 0 to (pinCount - 1).
// use a for loop to initialize each pin as an output:
for (int thisPin = 0; thisPin < pinCount; thisPin++) {
pinMode(ledPins[thisPin], OUTPUT);
}
}
void loop()
{
// loop from the lowest pin to the highest:
for (int thisPin = 0; thisPin < pinCount; thisPin++)
{
// turn the pin on:
digitalWrite(ledPins[thisPin], HIGH);
delay(timer);
// turn the pin off:
digitalWrite(ledPins[thisPin], LOW);
}
// loop from the highest pin to the lowest:
for (int thisPin = pinCount - 1; thisPin >= 0; thisPin--) {
// turn the pin on:
digitalWrite(ledPins[thisPin], HIGH);
delay(timer);
// turn the pin off:
digitalWrite(ledPins[thisPin], LOW);
}
}
2020年2月1日 星期六
訂閱:
張貼留言 (Atom)
algorithm
#include <iostream> #include <string.h> using namespace std; int main(int argc, char** argv) { for(int j=2;j<=100;j++)//j...
-
本文旨在補充《 超圖解Arduino互動設計入門 》第18章「RFID無線識別裝置與問答遊戲製作」單元,書本採用的RFID讀卡機模組是採用9600bps, TTL序列通訊介面,RFID的通訊頻率為125KHz。這種模組的接線和程式都很簡單,每當感測到RFID卡,讀卡機就把...
-
setw [C++] 使cout印出格式對齊-setw 設定輸出的欄位長度 85138 0 C/C++ 最近在一些程式,需要用到命令提示字元模式來印出結果,有時候我們會像表格一樣要每一筆資料可能有兩到三個欄位,但這時候,印出時都會因為印出的文字或數字太長而使排版跑掉 但是在...
-
#include "reg51.h" main() { void delay(int); int i ,j; char seg[10]={0xc0,0xf9,0xa4,0xb0,0x99, 0x92,0x82,0xf8,0x80,0x9...
沒有留言:
張貼留言