#define 和i..建议大家不要拿 int led=13 与 #define LED 13 作比较,而是应该比较const int LED = 13 和 #define LED 13首先,作为一个严谨的编程习
#define ONE_WIRE_BUS 2 //定义单总线连接端口 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); void setup(void) { Serial.begin(9600); Serial.println("Dallas Temperature IC Control Library Demo"); sensors.begin(); //启动单总线 } void loop(void) { Serial.print("Requestin...
// SerialMouse sketch #define potXPin 4 #define potYPin 5 void setup() { Serial.begin(9600); } void loop() { int x = analogRead(potXPin); int y = analogRead(potYPin); Serial.print(x,DEC); Serial.print(","); Serial.print(y,DEC); Serial.println(); // send a cr/lf delay(...
TFT//#define LOAD_FONT8N// FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts#defineLOAD_GFXFF// Comment out the #define below to stop the SPIFFS filing system and smooth font code being loaded// this will save ~20kbytes of FLASH#defineSMOOTH_...
Define a function; call a function Namingis important Function Arguments Data can be passed to functions asarguments Function Return Value Functions can return a value to the caller The type of the return value must be declared Lecture 3.2 Global Variables ...
#define HX711_H -> #define HX711A_H void tare(int t = 10); -> double tare(int t = 10); 这样在调用 tare() 的时候就可以返回 OFFSET 值了,我们存储 OFFSET值就可以了。 可是新的问题又出现了,OFFSET 值是 double 类型的,而我们 Arduino 提供的 EEPROM 库一次仅能存储1个 char 类型数据。于是...
#define ONE_WIRE_BUS 2 //定义单总线连接端口 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); void setup(void) { Serial.begin(9600); Serial.println("Dallas Temperature IC Control Library Demo"); sensors.begin(); //启动单总线 } void loop(void) { Serial.print("Requestin...
#include <FAB_LED.h> ws2812b<D,6> myWs2812; #define NUM_PIXELS 40 rgbw rgbwPixels[NUM_PIXELS] = {}; grbw grbwPixels[NUM_PIXELS] = {}; rgb rgbPixels[NUM_PIXELS] = {}; grb grbPixels[NUM_PIXELS] = {}; void setup() { for (int i=0; i < 40; i++) { // Initialize rg...
Calling this function will reset all completed tests (passed, failed or skipped) back to their initial state. For tests that define asetupmethod, this will be run again on the nextTest::run(). If any tests were not completed yet, these are unaffected. The statistics (number of passed, fa...
这个号在Arduino程序中是用int类型定义的。行3中打算使用一个引脚,将其命名为led;LED_BUILTIN 是一个通过#define语句定义的常量符号,在uno中 LED_BUILTIN 是 13,在rpi pico中,LED_BUILTIN 是25。因此在该rpi pico程序中,行3等价于 int led = 25; Arduino Uno的电路板的PCB俯视图,右侧0、1、2、...、1...