If you want to talk to multiple devices using serial communications, either you need more than one serial port or you’ll need to use software serial to emulate a serial port using Arduino pins (see “Emulate Serial Hardware with Digital Pins”). Note Many sensors and output devices that ...
6. Analog I/O Pins(模拟输入/输出针脚) 8个 7. Digital I/O Pins(数字输入/输出引脚) 14个 Analog vs Digital: Analog(模拟) and digital(数字) signals(信号) are used to(被用于) transmit information(传输信息), usually through electric signals(通过电子信号). In both these technologies(这些技术)...
9.6 &= (compound bitwise and) 9.8 |= (compound bitwise or) 变量部分 十、常量 10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true | false(逻辑层定义) 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 boole...
Note1 The pins 4 and 10 can not be used simultaneously as PWM. Note2 The pins 5 and 12 can not be used simultaneously as PWM. SPI: on the ICSP header. These pins support SPI communication using the SPI library. Note that the SPI pins are not connected to any of the digital I/O ...
Digital I/O: pins from 0 to 53 使用pinMode(), digitalWrite(), anddigitalRead() 函数,每一个IO都可以作为输入输出端口。他们工作在3.3V。每一个IO都可以输出 3 mA 或者 15 mA电流,或者输入6 mA 或者 9 mA电流。也都有100K 欧 的内部上拉电阻(默认状态下不上拉)。
数字引脚(Digitalpins)定义,INPUT和OUTPUT数字引脚当作INPUT或OUTPUT都可以。用pinMode()方法使一个数字引脚从INPUT到OUTPUT变化。引脚(Pins)配置为输入(Inputs)Arduino(Atmega)引脚通过pinMode()配置为输入(INPUT)即是将其配置在一个高 55、阻抗的状态.配置为INPUT的引脚可以理解为引脚取样时对电路有极小的需求,即...
* ends to +5V and ground* wiper to LCD VO pin (pin 3)*/// include the library code:#include <LiquidCrystal.h>// initialize the library with the numbers of the interface pinsLiquidCrystal lcd(12, 11, 5, 4, 3, 2);int sensorValue = 0; // variable to store the value coming from...
The megaAVR-0 microcontrollers are equipped with an analog comparator. It compares the voltage levels on two inputs and gives a digital output based on this comparison. The megAVR chip has four positive AC pins and three negative. There's also a configurable internal voltage reference that can...
读取PB2电平 a = (PINB>>2)&1; // a = 1 or 0 比调函数快10倍以上.不过,很明显,标准...
10.2INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3true | false(逻辑层定义) 10.4integer constants(整数常量) 10.5floating point constants(浮点常量) 十一、数据类型 11.1void 11.2boolean(布尔) 11.3char(有号数据类型) 11.4unsigned char(无符号数据类型) ...