atol()函数可以将字符串转换为long类型,但需要注意,如果字符串表示的数值超出了long类型的范围,可能会导致溢出。不过,在大多数情况下,atol()已经足够使用,因为unsigned long和long在Arduino中通常具有相同的位宽。 cpp #include <Arduino.h> void setup() { Serial.begin(9
11.4 unsignedchar(无符号数据类型) 11.5 byte(无符号数) 11.6 int(整型)2 11.7 unsignedint(无符号整型) 11.8 word 11.9 long(长整数型) 11.10 unsigned long(无符号长整数型) 11.11 float(浮点型数) 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 ar...
[mw_shl_code=cpp,true]#include <Arduino.h> // Declared weak in Arduino.h to allow user redefinitions.int atexit(void (* /*func*/ )()) { return 0; } // Weak empty variant initialization function.// May be redefined by variant files.void init...
String currentDir ="";unsignedlonglastButtonPress =0;voidsetup() {// Set encoder pins as inputspinMode(CLK,INPUT); pinMode(DT,INPUT); pinMode(SW, INPUT_PULLUP);// Setup Serial MonitorSerial.begin(9600);// Read the initial state of CLKlastStateCLK = digitalRead(CLK); }voidloop() {...
(uint8_t pin,int val);unsigned longmillis(void);unsigned longmicros(void);voiddelay(unsigned long ms);voiddelayMicroseconds(unsigned int us);unsigned longpulseIn(uint8_t pin,uint8_t state,unsigned long timeout);unsigned longpulseInLong(uint8_t pin,uint8_t state,unsigned long timeout);void...
Avoid out-of-bounds reads in String (#8463, #8597) Fix compilation issues and update toolchain (#8393, #8613) Update to SdFat 2.1.1 with UTF-8 support (#8355) lwIP v2.1.3 + various fixes (#8319, #8596) WiFiServer - 'rename' available() to accept() (#8419) WiFiServer - don...
= = = || ! ++ -- += -= *= /= 数据类型: boolean 布尔类型 2 Arduino 手册(精要版) char byte 字节类型 int unsignedint long unsignedlong float double string array void 数据类型转换: char() byte() int() long() float() 常量: HIGH|LOW 表示数字IO 口的电平,HIGH 表示高 电平(1),...
#include<Arduino.h>booleanat_exec(char*data,char*keyword,unsigned long time_out){Serial.println(data);Serial.flush();delay(100);// 等待响应unsigned long start=millis();while(Serial.available()<strlen(keyword)){if(millis()-start>time_out)returnfalse;}if(Serial.find(keyword))returntrue;else...
11.4 unsigned char(无符号数据类型) 11.5 byte(无符号数) 11.6 int(整型) 11.7 unsigned int(无符号整型) 11.8 word 11.9 long(长整数型) 11.10 unsigned long(无符号长整数型) 11.11 float(浮点型数) 11.12 double(双精度浮点数) 11.13 string(char array/字符串) ...
arduino:language:unsignedlong 描述 无符号长整型变量扩充了变量容量以存储更大的数据,它能存储32位(4字节)数据。与标准长整型不同无符号长整型无法存储负数,其范围从0到4,294,967,295(2 ^ 32 - 1)。 例子 unsignedlongtime;voidsetup(){Serial.begin(9600);}voidloop(){Serial.print("Time: ");time=mill...