11.3 char(有号数据类型) 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) 11.14 String o...
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 volatile 13.4 const 十四、...
char* myStrings[]={ "This is string 1", "This is string 2", "This is string 3", "This is string 4", "This is string 5","This is string 6"}; void setup(){ Serial.begin(9600); } void loop(){ for (int i = 0; i < 6; i++){ Serial.println(myStrings[i]); delay(50...
char myChar = 65; // both are equivalent unsigned char类型说明 无符号字符型 描述 一个无符号数据类型占用1个字节的内存。与byte的数据类型相同。 无符号的char数据类型能编码0到255的数字。 为了保持Arduino的编程风格的一致性,byte数据类型是首选。 例子 unsigned char myChar = 240; byte类型说明 字节型 ...
Serial.print((char)first[i]); } } void writeMsg(byte* first, size_t len) { for(int i = 0; i 《 len; i++) { EEPROM.write(i, first[i]); } } void readMsg(size_t len) { byte res; Serial.print(“Message: ”);
3.4 数组 array 数组是相同类型的数据组成的集合,数组中的每个元素都被默认分配一个索引(下标),我们可以通过数组名[ 索引 ]的方式访问数组中的元素。 创建数组 语法格式: datatype arrayname[ 数组元素个数]; intInts[6];intP[]={2,4,8,3,6};intSensVals[6]={2,4,-8,3,2};charmessage[6]="hello...
char array2[]="hello, world! "; //the string to print on the LCD int tim = 500; //the value of delay time // initialize the library with the numbers of the interface pins LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 0x3F for a 16 chars and 2 line dis...
Serial.print((char)payload[i]); } Serial.println(); } void reconnect() { while (!client.connected()) { String clientId = "ESP8266Client"; clientId += String(random(0xffff), HEX); if (client.connect(clientId.c_str())) {
void setup() { char my_str[6]; // an array big enough for a 5 character string Serial.begin(9600); my_str[0] = 'H'; // the string consists of 5 characters my_str[1] = 'e'; my_str[2] = 'l'; my_str[3] = 'l'; my_str[4] = 'o'; my_str[5] = 0; // 6th ...
//Serial.print(char). It is quite long so I will just //copy it in //SRAM memory optimized function to print header text: // // | Max absolute timing error for each priority | Free mem| // |---| ___ // | 0 | 1 | 2 | 3 | 4 | 5 | 6 | | CPU| // #define p...