pinMode( ledPin, OUTPUT ) ; ELECHOUSE_cc1101.Init( F_433 ); // Frequency: 433MHz //ELECHOUSE_cc1101.Init( F_868 ) ; // Frequency: 868MHZ //ELECHOUSE_cc1101.Init( F_915 ) ; // Frequency: 915MHz if ( IS_GARAGE_STATION ) ELECHOUSE_cc1101.SetReceive() ; // Do listen else if...
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...
pinMode(13, OUTPUT); //Set pin 13 as an 'output' pin as we will make it output a voltage. digitalWrite(13, HIGH); //This turns on pin 13/supplies it with 3.3 Volts. } The line of code starting with ‘pinMode’ sets pin 13 as an output. This enables us to write a value to...
LL_GPIO_SetOutputPin(GPIOA,LL_GPIO_PIN_1); GPIO 函数库 Arduino 数字 I/O 函数库 digitalRead(pin) digitalWrite(pin, value) pinMode(pin, mode) STM32 函数库 标准库(STM32F103xx) 复位和时钟设置(RCC) void RCC_DeInit(void); void RCC_HSEConfig(uint32_t RCC_HSE); ...
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 ...
return this->attach(pin, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH); } uint8_t Servo::attach(int pin, int min, int max) { if(this->servoIndex < MAX_SERVOS ) { pinMode( pin, OUTPUT) ; // set servo pin to output servos[this->servoIndex].Pin.nbr = pin; ...
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...
解决方案如下,我们仅仅将setPinModes()的执行移到setup()函数: C++ boolsetPinModes();intpin = GPIO5;boolinitialized;voidsetup(){ initialized = setPinModes(); }voidloop(){if( initialized ) {//do something} }boolsetPinModes(){if( pin <0)returnfalse; pinMode( pin, OUTPUT );returntrue; ...
NOTE: If you do not set the pinMode() to OUTPUT, and connect an LED to a pin, when calli...
NOTE: If you do not set the pinMode() to OUTPUT, and connect an LED to a pin, when calli...