pinMode(pin, mode)作用:设置一个引脚(pin)作为GPIO时的I/O模式。 参数: pin:引脚编号 mode:GPIO的I/O模式,取值有3种 INPUT :作为数字输入 OUTPUT :作为数字输出 INPUT_PULLUP:作为数字输入,且使能引脚的内部上拉电阻 Arduino的引脚,在上电时默认就是输入模式,但最好使用pinMode设置,更加明确。 当配置引脚...
In summary, this code turns on and off a digital pin (GPIO22) on an Arduino board with a delay of 1 second between each state change. This can be used for various purposes such as blinking an LED connected to the pin, controlling a relay, or sending signals to other devices. ESP32 ...
end that you can use to connect external devices to your Arduino. Each pin plug can connect to one pin on your Arduino. For example, one wire could be connected to pin 13 (which will be used in this tutorial) and one other wire could be connected to the ground pin to power atiny...
那么P1.5就是一个引脚（pin），而作为数字输出，UART的RX就是这个引脚的2个功能。
// pin=中断引脚,function=中断函数,mode=中断触发模式 attachInterrupt(pin, function, mode); 如果在程序运行过程不需要使用外部中断了,可以用中断分离函数来取消这一中断设置: detachInterrupt(interrupt); detachInterrupt(Pin);。 3、示例 void setup()
1、INPUT模式：当将一个引脚设置为INPUT模式时，引脚被配置为数字输入。引脚可以接收来自外部电路的信号，将其转换为数字值（HIGH或LOW）。2、OUTPUT模式：当将一个引脚设置为OUTPUT模式时，引脚被配置为数字输出。这意味着我们可以通过该引脚向外部电路发送数字信号（HIGH或LOW）。3、INPUT_PULLUP模式：当...
Arduino Uno pin Arduino Mega pin Notes +5V Power supply 5V 5V Can draw up to 250mA if all LEDs are on GND Ground GND GND SIN SPI input (IN connector only) 11 (MOSI) 51 (MOSI) SPI data to bargraph SOUT SPI output (OUT connector only) SPI data overflow from last bargraph (to SI...
pin0.mode(Pin.OUT)# 设置 0 号引脚为输出模式pin1.pull(Pin.PULL_DOWN)# 设置 1 号引脚为下拉输入模式pin2.init(mode=Pin.IN, pull=Pin.PULL_UP)# 设置 2 号引脚为上拉输入模式 有些时候当外部输入信号发生改变时,单片机需要执行一些操作,比如按下开关时亮灯。这就需要用到中断,中断是来自设备的一个...
All ESP32 GPIO pins are interrupt-capable pins. You can enable the interrupt functionality to any GPIO input pin using this function from the Arduino Core. 1 attachInterrupt(GPIO_pin,ISR,Event); We’ll get into the details of this function and how to use it in the next section. ...
gpio gpio_open(int pin) Returns a new handle to a GPIO device for a specific pin on the I/O switch. This function can only be called if there is an I/O switch in the design. gpio gpio_open_device(unsigned int device) Returns a handle to an AXI GPIO controller based either on the...