digitalRead(pin); 该函数在引脚设置为输入的情况下,可以获取引脚的电压情况HIGH(高电平)或者LOW低电平。 模拟I/O口的操作函数 analogReference(type); 该函数用于配置模拟引脚的参考电压,有三种类型:default:默认值,参考电压是5v;internal:低电压模式,使用片内基准电压源2,56v;external:扩展模式,通过AREF引脚获取参考...
HIGH、LOW 表示读写数字IO脚的值 INPUT、OUTPUT 表示数字IO脚的方向 true、false 数字IO pinMode() pinMode(pin,mode); pin:0-13 mode:INPUT / OUTPUT 返回None digitalWrite() digitalWrite(pin,Value); Value:HIGH / LOW 返回None digitalRead() digitalRead(pin,Value); Value:HIGH / LOW eg: 1 int le...
void digital_4(void) //显示数字4{digitalWrite(a,LOW);digitalWrite(b,HIGH);digitalWrite(c,HIGH);digitalWrite(d,LOW);digitalWrite(e,LOW);digitalWrite(f,HIGH);digitalWrite(g,HIGH);digitalWrite(dp,HIGH);}void digital_5(void) //显示数字5{digitalWrite(a,HIGH);digitalWrite(b,LOW);digitalWrite(c,H...
1、按Arduino\hardware\arduino\avr路径打开文件夹,打开boards.txt文件,此文件中可查看相应板卡芯片的熔丝位: 可以查看到对于uno的328P芯片,低熔丝位(low_fuses)是FF,高位(high_fuses)是DE,扩展位(extended_fuses)是FD。 2、如何在progisp里设置熔丝位 点击自动旁边三点,如下图所示: 然后弹出设置框,即可设置 注...
digitalWrite(blueLedPin, LOW); Serial.print("Temperature is "); Serial.print(temperature); //设置LED作为输出 if(temperature <= lowerLimit) { Serial.println(", blue LED is Activated"); digitalWrite(blueLedPin, HIGH); } elseif(temperature > lowerLimit && temperature < higherLimit) { ...
Controller found ");break;}pinMode(input1,OUTPUT);pinMode(input2,OUTPUT);pinMode(input3,OUTPUT);pinMode(input4,OUTPUT);}voidSTOP(){digitalWrite(input1,LOW);digitalWrite(input2,LOW);digitalWrite(input3,LOW);digitalWrite(input4,LOW);}//停止函数voidRUN(){digitalWrite(input1,HIGH);digitalWrite(...
Here is a shield for Arduino 328's that solves this problem. It can play up to 22KHz 12bit uncompressed audio files of any length. It's low cost, available as an easy-to-make kit. It has an onboard DAC, filter and op-amp for high quality output. Audio files are read off of ...
digitalWrite(controlPin3A, LOW); digitalWrite(controlPin4A, HIGH); } analogWrite(servoENablePin, steering); //Servo position } 带有操纵杆的简单 RC Android 应用程序 接下来,让我们构建一个简单的 Android 应用程序来控制模型。 我们将使用 MIT app inventor 2。MIT App Inventor 是一个创新的初学者对编程...
无论当前引脚状态为HIGH或者LOW,上拉电阻的控制都是由微控制器内部的相同寄存器来完成的。因此,如果某个引脚被配置为INPUT_PULLUP上拉电阻接通,如果该引脚随后通过pinMode()切换至OUTPUT,此时该引脚的状态将被设置为HIGH,而再通过pinMode()切换至INPUT,则处于HIGH状态的OUTPUT引脚同样将会使能上拉电阻。这也正是Ar...
single pixel at an arbitrary positionpushColor(uint16_t color) //push a single pixelpushColor(uint16_t color, uint32_t len) //push a single colour to "len" pixelsstartWrite(void) //begin transaction with CS low, MUST later call endWriteendWrite(void) //end transaction with CS high...