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、...
getDirection(myArray, azimuth); } 如果要打印这些值,可以这样: 1 2 3 4 5 6 7 8 9 10 11 voidloop(){ azimuth = compass.getAzimuth(); charmyArray[3]; getDirection(myArray, azimuth); Serial.print(myArray[0]); Serial.print(myArray[1]); Serial.print(myArray[2]); Serial.println();...
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...
在Arduino常用的数据类型有:整型int,long长整型,浮点型float,字符型char还有布尔型boolean,其他的还有byte,word。short数据类型用的很少。void将来在自定义函数时再看,array数组也放在数组部分介绍,String 被称谓字符串对象,它主要帮助我们处理字符串,比如查找字符,修改字符,分割字符等等。 常用的int 、long 、float、 ...
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())) {
Serial.begin(9600); compass.init(); } void loop() { compass.read(); byte a = compass.getAzimuth(); char myArray[3]; compass.getDirection(myArray, a); Serial.print(myArray[0]); Serial.print(myArray[1]); Serial.print(myArray[2]); ...
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: ”);
char unsigned char byte int unsigned int word long unsigned long float double string String(c++) array void类型说明 void只用在函数声明中。它表示该函数将不会被返回任何数据到它被调用的函数中。 例子: //功能在“setup”和“loop”被执行 //但没有数据被返回到高一级的程序中 ...
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). 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...