println("The converted integer value is: " + String(number)); } 综上所述,这里是一个完整的示例代码,展示了如何读取字符串、将其转换为整数、验证转换结果,并进行错误处理: cpp void setup() { Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native ...
println("\n\nchanging the Strings' values"); stringOne = "A long integer: "; stringTwo = "The millis(): "; // 使用 concat() 来为子妇产添加一个长变量 stringTwo.concat(millis()); Serial.println(stringTwo); while(true); } 输出结果: 改变字符串的大小写 可以使用 toUpperCase 和toLower...
char* RCspeed = strtok(NULL, ","); int iRCsteering = atoi(RCsteering); // convert string into integer int iRCspeed = atoi(RCspeed); // convert string into integer //rest of program } Android 应用程序发送的字符串被读入一个特殊的字符串结构:一个带有 null-termination 的 C 字符串。(0 ...
问在Arduino IDE中将255以上的"String“转换为确切的"Integer”或"Long“类型ENstr := “123” // ...
(9600);// make the pins outputs:pinMode(redPin,OUTPUT);pinMode(greenPin,OUTPUT);pinMode(bluePin,OUTPUT);}voidloop(){// if there's any serial available, read it:while(Serial.available()>0){// look for the next valid integer in the incoming serial stream:intred=Serial.parseInt();//...
uint8_t font)//draw string right justified to dXdrawRightString(const String& string, int32_t dX, int32_t poY, uint8_t font)drawRightString(const char *string, int32_t dX, int32_t poY, uint8_t font)drawNumber(long long_num, int32_t poX, int32_t poY) //draw a long integer...
stringOne = String(stringTwo + " with more"); // prints "This is a string with more": Serial.println(stringOne); // using a constant integer: stringOne = String(13); Serial.println(stringOne); // prints "13" // using an int and a base: ...
10.4 integer constants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 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) ...
int num; // general purpose integer Serial.begin(9600); // (1) print the string Serial.println(str); // (2) get the length of the string (excludes null terminator) num = strlen(str); Serial.print("String length is: "); Serial.println(num); // (3) get the length of the array...
ArduinoSTRINGdeviceNameINTEGERbaudRateSensorSTRINGsensorTypeFLOATvalueComputerSTRINGosSTRINGpythonVersionreadsconnects 上图表示Arduino通过读取传感器,获取相应的温度和湿度值,同时计算机通过串口连接Arduino。 旅行图 下面是整个数据读取过程的旅行图,使用mermaid语法表示: ...