Добрый день! Есть Образовательный набор «Амперка», установил программу Arduino с официального сайта, работаю на Mac, примеров от Амперки нет (но это и не важно), застрял на параграфе 13.3 "Как научить компьютер говорить на азбуке Морзе при помощи Arduino", дело вот в чем: Я переписал код с книги: int soundPin = 13; int dotDelay = 50; long time; int rate = 100; void sound(int duration) { time = millis(); while (millis() - time < duration) { digitalWrite(soundPin, HIGH); delayMicroseconds(rate); digitalWrite(soundPin, LOW); delayMicroseconds(rate); } } void dot() { sound(dotDelay); delay(dotDelay); } void dash() { sound(3 * dotDelay); delay(3 * dotDelay); } void letterEnd() { delay(2 * dotDelay); } void wordEnd() { delay(6 * dotDelay); } void morseLetter(char c) { switch (c) { case "a": dot(); dash(); break; case "b": dash(); dot(); dot(); dot(); break; case "c": dash(); dot(); dash(); dot(); break; case "d": dash(); dot(); dot(); break; case "e": dot(); break; case "f": dot(); dot(); dash(); dot(); break; case "g": dash(); dash(); dot(); break; case "h": dot(); dot(); dot(); dot(); break; case "i": dot(); dot(); break; case "j": dot(); dash(); dash(); dash(); break; case "k": dash(); dot(); dash(); break; case "l": dot(); dash(); dot(); dot(); break; case "m": dash(); dash(); break; case "n": dash(); dot(); break; case "o": dash(); dash(); dash(); break; case "p": dot(); dash(); dash(); dot(); break; case "q": dash(); dash(); dot(); dash(); break; case "r": dot(); dash(); dot(); break; case "s": dot(); dot(); dot(); break; case "t": dash(); break; case "u": dot(); dot(); dash(); break; case "v": dot(); dot(); dot(); dash(); break case "w": dot(); dash(); dash(); break; case "x": dash(); dot(); dot(); dash(); break; case "y": dash(); dot(); dash(); dash(); break; case "z": dash(); dash(); dot(); dot(); break; case " ": wordEnd(); break; } letterEnd(); } void setup() { pinMode(soundPin, OUTPUT); Serial.begin(9600); } void loop() { if (Serial.available() > 0) { char c = Serial.read(); morseLetter(c); } } А программа выдает ошибку
Вот ошибка: Arduino: 1.6.11 (Mac OS X), Board: "Arduino/Genuino Uno" /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino: In function 'void morseLetter(char)': /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:46:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "a": dot(); dash(); break; ^ sketch_aug24a:46: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:47:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "b": dash(); dot(); dot(); dot(); break; ^ sketch_aug24a:47: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:48:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "c": dash(); dot(); dash(); dot(); break; ^ sketch_aug24a:48: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:49:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "d": dash(); dot(); dot(); break; ^ sketch_aug24a:49: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:50:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "e": dot(); break; ^ sketch_aug24a:50: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:51:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "f": dot(); dot(); dash(); dot(); break; ^ sketch_aug24a:51: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:52:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "g": dash(); dash(); dot(); break; ^ sketch_aug24a:52: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:53:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "h": dot(); dot(); dot(); dot(); break; ^ sketch_aug24a:53: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:54:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "i": dot(); dot(); break; ^ sketch_aug24a:54: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:55:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "j": dot(); dash(); dash(); dash(); break; ^ sketch_aug24a:55: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:56:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "k": dash(); dot(); dash(); break; ^ sketch_aug24a:56: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:57:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "l": dot(); dash(); dot(); dot(); break; ^ sketch_aug24a:57: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:58:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "m": dash(); dash(); break; ^ sketch_aug24a:58: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:59:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "n": dash(); dot(); break; ^ sketch_aug24a:59: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:60:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "o": dash(); dash(); dash(); break; ^ sketch_aug24a:60: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:61:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "p": dot(); dash(); dash(); dot(); break; ^ sketch_aug24a:61: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:62:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "q": dash(); dash(); dot(); dash(); break; ^ sketch_aug24a:62: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:63:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "r": dot(); dash(); dot(); break; ^ sketch_aug24a:63: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:64:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "s": dot(); dot(); dot(); break; ^ sketch_aug24a:64: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:65:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "t": dash(); break; ^ sketch_aug24a:65: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:66:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "u": dot(); dot(); dash(); break; ^ sketch_aug24a:66: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:67:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "v": dot(); dot(); dot(); dash(); break ^ sketch_aug24a:67: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression sketch_aug24a:68: error: expected ';' before 'case' case "w": dot(); dash(); dash(); break; ^ /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:68:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "w": dot(); dash(); dash(); break; ^ sketch_aug24a:68: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:69:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "x": dash(); dot(); dot(); dash(); break; ^ sketch_aug24a:69: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:70:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "y": dash(); dot(); dash(); dash(); break; ^ sketch_aug24a:70: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression /Users/Dzhamaluddin/Documents/Arduino/sketch_aug24a/sketch_aug24a.ino:71:10: warning: invalid conversion from 'const char*' to 'int' [-fpermissive] case "z": dash(); dash(); dot(); dot(); break; ^ sketch_aug24a:71: error: conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression exit status 1 conversion from pointer type 'const char (*)[2]' to arithmetic type 'int' in a constant-expression This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
Уберите двойные кавычки вокруг всех символов в case, и замените их на одинарные, т.е., было - Код (C++): case "b" должно стать Код (C++): case 'b'
