*/#include<Arduino.h>// Declared weak in Arduino.h to allow user redefinitions.intatexit(void(*/*func*/)()){return0;}// Weak empty variant initialization function.// May be redefined by variant files.voidinitVariant()__attribute__((weak));voidinitVariant(){}voidsetupUSB()__attribute__...
Main.cc: In function 'int main()':Main.cc:47: error: redefinition of 'int main()'Main.cc:13: error: 'int main()' previously defined here 以下是我的代码：include<iostream> include<cstring> using namespace std;struct MyStr{ int len;char str[300];};void InitStr(MyStr &s...
int findInList(char keyChar) Example #include <Keypad.h> const byte ROWS = 4; //four rows const byte COLS = 3; //three columns char keys[ROWS][COLS] = { {‘1’,‘2’,‘3’}, {‘4’,‘5’,‘6’}, {‘7’,‘8’,‘9’}, {’#’,‘0’,’*’} }; byte rowPins[ROWS...
例如01.Basics里的Blink,使用板载的13引脚LED,交替亮灭。 // the setup function runs once when you press reset or power the boardvoidsetup(){// initialize digital pin LED_BUILTIN as an output.pinMode(LED_BUILTIN, OUTPUT); }// the loop function runs over and over again forevervoidloop(){...
不平衡的括号常可导致许多错误,比如令人费解的编译器错误,有时很难在一个程序找到这个错误。由于其不同的用法,括号也是一个程序中非常重要的语法,如果括号发生错误,往往会极大地影响了程序的意义。 大括号中的主要用途 功能函数 void myfunction(datatype argument){ ...
writecommand(uint8_t c) //Send an 8 bit command to the TFT examples/320 x 240/TFTwidth(_Matrix/TFT_Matrix.inowritedata(uint8_t d) //Send a 8 bit data value to the TFTreadcommand8(uint8_t cmd_function, uint8_t index) //Read a 8 bit data value from an indexed command ...
attachInterrupt(0, count_function, RISING); //Counter restarted } 了解代码 我们的转速表使用霍尔效应传感器;霍尔效应传感器基于霍尔效应,以其发现者埃德温·霍尔命名。 霍尔效应是当垂直于电流引入磁场时,在载流导体上产生电压的现象。由于这种现象而产生的电压有助于输入信号的产生。如前所述,中断将在本项目中使...
feat(zigbee): Add range extender device endpoint by @P-R-O-C-H-Y in #10970 feat(zigbee): Add Analog endpoint device (input, output, value clusters) by @pwclay in #10950 fix(zigbee): use correct pressure cluster function in setTolerance by @oddlama in #11008 feat(zigbee): Add Zigb...
pinMode(LED_BUILTIN, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(LED_BUILTIN, LOW); // turn the LED off by makin...
/* Blink without Delay Turns on and off a light emitting diode (LED) connected to a digital pin, without using the delay() function. This means that other code can run at the same time without being interrupted by the LED code. The circuit: * Use the onboard LED. * Note: Most Ard...