pinMode(13, OUTPUT); //set pin 13 as output attachInterrupt(digitalPinToInterrupt(pin), blink, CHANGE); //interrupt at pin 2 blink ISR when pin to change the value } void loop() { digitalWrite(13, state); //pin 13 equal the state value } void blink() { //ISR function state = !
Analog input, analog output, serial output Reads an analog input pin, maps the result to a range from 0 to 255 and uses the result to set the pulsewidth modulation (PWM) of an output pin. Also prints the results to the serial monitor. The circuit: * potentiometer connected to analog pi...
OUTPUT); // sets the digital pin as output pinMode(KEY1, INPUT_PULLUP); pinMode(KEY2, INPUT_PULLUP); myGizwits.begin(); } void wifiStatusHandle() { // if(myGizwits.wifiHasBeenSet(WIFI_SOFTAP)) // Serialprintln(F("WIFI_SOFTAP!")); // // if(myGizwits.wifiHasBeenSet(WIFI_AIRL...
DigitalInputPullup - 示范用pinmode()来定义上拉输入引脚 StateChangeDetection - 记录按键按下的次数 toneKeyboard - 一个含有压力传感器和压电扬声器的三键音乐键盘 toneMelody - 用压电扬声器来演奏一个旋律 toneMultiple - 用tone()命令在多个扬声器上弹奏音调 tonePitchFollower - 在压电扬声器上利用模拟输入来弹奏...
注意如何设置输入输出模式,OUTPUT和INPUT。 如何读取某个管脚的电平状态。 /* Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: - LED attached from pin 13 to ground through 220 ohm resistor ...
Arduino IDE自然是从官网下载的。pinMode(pin, mode):设置引脚。第一个参数表示设置的引脚,第二个参数表示将要把引脚设置成的模式。digitalWrite(pin, value):输出信号。第一个参数为引脚,第二个参数为输出模式。HIGH即为高电平,LOW即为低电平。 set
// set all the motor control pins to outputs pinMode(enA, OUTPUT); pinMode(enB, OUTPUT); pinMode(in1, OUTPUT); pinMode(in2, OUTPUT); pinMode(in3, OUTPUT); pinMode(in4, OUTPUT); } void demoOne() { // this function will run the motors in both directions at a fixed speed ...
tft.setTextSize(3); tft.setTextColor(WHITE); tft.println(symbol[j][i]); 2. 检测按钮: 另一项具有挑战性的任务是检测用户触摸。每次用户触摸某个地方时,我们就能知道他触摸的像素的 X 和 Y 位置。可以使用 println 在串行监视器上显示此值,如下所示。
NOTE: If you do not set the pinMode() to OUTPUT, and connect an LED to a pin, when calli...
对于Arduino，用pinMode将IO口设为OUTPUT的时候，其实IO的状态为“强推挽”，也就是说设为高电平时，I...