constintled=LED_BUILTIN;constintpinBeep=8;// pwmconstintpinIrDrvs[]={0,3,9};// pwmconstintpinBtn=1;UARTpc1(4,5,NC,NC);// NC 即Not Connected,未连接,此处表示UARTpc0(16,17,-1,-1);// 不使用硬件流控制; -1 等价于 NCconstintpinDE=18;constintpinADCs[]={26,27,28};constintp...
第一，防止被修改。const表示本变量为“常变量”，即是一个变量形式的常量，定义后不可修改，只能引用；第二，节约运行空间。用const修饰的变量，在硬件上会被保存到ROM即“程序存储器”（类似于电脑的硬盘或手机的内存）中。因为用于计算的“随机存储器”RAM（类似于电脑的内存或手机的运存）空间比ROM...
int Digital_Value=0; float temp_Value=0; void setup(){ Serial.begin(9600); //波特率设置为9600 //由于测温范围为0～100℃,输出电压为0～1V,采用内部1.1V参考电压 analogReference(INTERNAL); } void loop(){ Digital_Value=analogRead(A0); //读取电压值(数字量) temp_Value=(float)Digital_Value/10...
int Digital_Value=0;float temp_Value=0;void setup(){ Serial.begin(9600); //波特率设置为9600 //由于测温范围为0～100℃,输出电压为0～1V,采用内部1.1V参考电压analogReference(INTERNAL);}void loop(){ Digital_Value=analogRead(A0); //读取电压值(数字量) temp_Value=(float)Digital_Value/1023*110.0...
#ifndefPROGMEM#definePROGMEM#endifconstuint8_tgImage_demo_image1[115200]PROGMEM={/* 0X10,0X10,0X00,0XF0,0X00,0XF0,0X01,0X1B, */ PROGMEM的用法具体我就不说了,不懂的可以自己去查。 2)lcd-image-converter使用方法 打开一张图片,点击 Options -> Conversion… ...
const int sensorPin = 0; const int ledPin = 9; // We'll also set up some global variables for the light level: int lightLevel, high = 0, low = 1023; void setup() { // We'll set up the LED pin to be an output. pinMode(ledPin, OUTPUT); } void loop() { lightLevel = ...
#line 2 "sketch.ino" #include <ArduinoUnit.h> test(ok) { int x=3; int y=3; assertEqual(x,y); } test(bad) { int x=3; int y=3; assertNotEqual(x,y); } void setup() { Serial.begin(9600); while(!Serial) {} // Portability for Leonardo/Micro } void loop() { Test::run...
这是我的代码:const int digital_pin_2 = 5;//D1 const int digital_pin_3 浏览16提问于2021-08-10得票数 0 2回答 Arduino ESP8266库 、 我刚接触arduino,刚刚学会了一个UNO和一个ESP8266模块。我已经设法将它们都正确地连接起来,并使用AT命令连接到我的家庭网络。但现在我正在尝试学习互联网上的教程,...
// Receive multiple numeric fields using Arduino 1.0 Stream parsing const int NUMBER_OF_FIELDS = 3; // how many comma-separated fields we expect int fieldIndex = 0; // the current field being received int values[NUMBER_OF_FIELDS]; // array holding values for all the fields void setup(...
INA226(const uint8_t address, TwoWire *wire = Wire)Constructor to set the address and optional Wire interface. bool begin()initializes the class. returns true if the INA226 address is on the I2C bus. Note: one needs to setWire.begin()before callingbegin(). ...