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arduino - Arduino 脚本抛出错误“X 未在此范围内声明”

问题描述

此链接中的代码和方案：https ://www.makerspaces.com/15-simple-arduino-uno-breadboard-projects/

我是一个完全的初学者。我刚开始，我的电路板有些困难，我的电脑无法识别电路板，我想创建一个简单的电路来测试一些命令，看看我是否解决了问题

完整代码：

// Pin assignement
#define btnPin 7
#define led1Pin 8
#define led2Pin 9
#define led3Pin 10
enum fcnMode { 
OFF, 
LED1, 
LED2, 
LED3,
FADE1, 
ALL,
BLINK,
NBSTATE
}; // OFF = 0 and NBSTATE=7
int ledState1 = LOW,ledState2 = LOW,ledState3 = LOW;             // ledState used to set the LED
unsigned long buttonState = 0;
int funcState=0;
unsigned long currentMillis1,currentMillis2,currentMillis3;        // will store current time
unsigned long previousMillis1,previousMillis2,previousMillis3;        // will store last time LED was updated
const long interval1 = 100;           // interval at which to blink (milliseconds)
const long interval2 = 300;
const long interval3 = 500;
/******************************************************************\
* PRIVATE FUNCTION: setup
*
* PARAMETERS:
* ~ void
*
* RETURN:
* ~ void
*
* DESCRIPTIONS:
* Initiate inputs/outputs
*
\******************************************************************/
void setup(){
Serial.begin(9600); // initialize serial port
pinMode(btnPin,INPUT_PULLUP);
pinMode(led1Pin,OUTPUT);
pinMode(led2Pin,OUTPUT);
pinMode(led3Pin,OUTPUT);
}
/******************************************************************\
* PRIVATE FUNCTION: loop
*
* PARAMETERS:
* ~ void
*
* RETURN:
* ~ void
*
* DESCRIPTIONS:
* Main Function of the code 
\******************************************************************/
void loop(){
buttonPressed();
setMode();
}
/******************************************************************
* SUBFUNCTIONS 
\******************************************************************/
void buttonPressed() {
buttonState = pulseIn(btnPin,HIGH,1000000);
if (buttonState > 50){
funcState += 1;
Serial.print("Button state n: ");
Serial.println(funcState);
}
funcState=funcState%NBSTATE;
}
void setMode() {
// All Off
digitalWrite(led1Pin,LOW);
digitalWrite(led2Pin,LOW);
digitalWrite(led3Pin,LOW);

Serial.print("Function : ");
Serial.println(funcState); 
switch(funcState){
case OFF:
break;
case LED1:
digitalWrite(led1Pin,HIGH);
break;
case LED2:
digitalWrite(led2Pin,HIGH);
break;
case LED3:
digitalWrite(led3Pin,HIGH);
break;
case FADE1:
fade1();
break;
case ALL:
digitalWrite(led1Pin,HIGH);
digitalWrite(led2Pin,HIGH);
digitalWrite(led3Pin,HIGH);
break;
case BLINK:
blinkLed1();
blinkLed2();
blinkLed3();
break;
}
}
void fade1(){
int brightness = 0; 
int fadeAmount = 5;   
for (brightness=0;brightness<=255;brightness+=fadeAmount){
analogWrite(led1Pin, brightness);
delay(30);  
}
for (brightness=255;brightness>=0;brightness-=fadeAmount){
analogWrite(led1Pin, brightness);
delay(30); 
}
}
void blinkLed1(){
currentMillis1 = millis();
if (currentMillis1 - previousMillis1 >= interval1) {
// save the last time you blinked the LED
previousMillis1 = currentMillis1;
// if the LED is off turn it on and vice-versa:
if (ledState1 == LOW) {
ledState1 = HIGH;
} else {
ledState1 = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(led1Pin, ledState1);
}
}
void blinkLed2(){
currentMillis2 = millis();
if (currentMillis2 - previousMillis2 >= interval2) {
// save the last time you blinked the LED
previousMillis2 = currentMillis2;
// if the LED is off turn it on and vice-versa:
if (ledState2 == LOW) {
ledState2 = HIGH;
} else {
ledState2 = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(led2Pin, ledState2);
}
}
void blinkLed3(){
currentMillis3 = millis();
if (currentMillis3 - previousMillis3 >= interval3) {
// save the last time you blinked the LED
previousMillis3 = currentMillis3;
// if the LED is off turn it on and vice-versa:
if (ledState3 == LOW) {
ledState3 = HIGH;
} else {
ledState3 = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(led3Pin, ledState3);
}
}

错误：

    sketch_may09b.cpp: In function 'void setup()':
sketch_may09b:38: error: 'INPUT_PULLUP' was not declared in this scope

标签： arduino

解决方案

您的文件扩展名为.cpp. .ino我认为如果你在 Arduino IDE 中应该是这样。如果没有帮助，请尝试INPUT在按钮上添加一个上拉电阻。

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