String comdata = "";//存放接收到的原始字符串 String buf1="";//存放解析出的第一个字符串 Str...
StringConstructors StringAdditionOperator StringIndexOf StringAppendOperator StringLengthTrim StringCaseChanges StringReplace StringCharacters StringStartsWithEndsWith StringComparisonOperators StringSubstring array -(数组) Arrays(数组) 数组是一种可访问的变量的集合。Arduino的数组是基于C语言的,因此这会变得很复杂,...
11.12 double(双精度浮点数) 11.13 string(char array/字符串) 11.14 String object(String类) 11.15 array (数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3 int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域 &修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13....
11.12 double(双精度浮点数) 11.13 string( char array/字符串) 11.14 String object( String类) 11.15 array(数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域&修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13.3...
message = message + “。 Pull Down: ” + String(buttonDownState); // send the message Serial.println(message); delay(1); // delay in between reads for stability } 在这里,没有什么新内容了,除了该行String message =“ Pull Up:”。..在这里,我们正在创建将发送到串行的消息一口气排队。首先,...
= WL_CONNECTED) { delay(500); Serial.print("."); } // 连接成功 Serial.println(""); Serial.println("WiFi connected."); Serial.print("IP address: "); Serial.println(WiFi.localIP()); // 打印IP地址 iPaddress = WiFi.localIP().toString(); // 将本地IP地址转换为String并赋值给iP...
char string1[] = "Arduino";//7字符+1空字符 char string2[8] = "Arduino"; // 与上行相同 array 数组 一串变量可以透过索引去直接取得。假如你想要储存不同程度的LED亮度时,你可以宣告六个变量light01,light02,light03,light04,light05,light06,但其实你有更好的选择,例如宣告一个整数数组变量如下: ...
(val, format) I参数:val:要发送的数据(任何数据类型)format:指定数字的基数(用于整型数)或者小数的位数(用于浮点数).返回值:<>size_t (long): print()返回发送的字节数(可丢弃该返回值).例如:/*IUses a FOR loop for data and prints a number in various formats.*/IIIIIint x = 0; / variable...
Docs(discord): Replace Gitter links with Discord by @lucasssvaz in #10852 Update README.md to add ESP-SR by @akdeb in #10925 Others Fix crash when using String::move on empty string (#10938) by @TD-er in #10945 Fix(logging): incorrect FPS logging by @TNeutron in #10921 New ...
If you want to use a variable to specify send pin e.g. with setSendPin(uint8_t aSendPinNumber), you must disable this IR_SEND_PIN macro e.g. with #undef IR_SEND_PIN. Then you can change send pin at any time before sending an IR frame. See also Compile options / macros for ...