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- Dictionarypin/pɪn/
noun
- 1. a thin piece of metal with a sharp point at one end and a round head at the other, used for fastening pieces of cloth, paper, etc. Similar
- 2. a metal projection from a plug or an integrated circuit which makes an electrical connection with a socket or another part of a circuit: "a three-pin plug"
verb
- 1. attach or fasten with a pin or pins: "he pinned the badge on to his lapel" Similar
- 2. hold (someone) firmly in a specified position so they are unable to move: "she was standing pinned against the door" Similar
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Apr 27, 2015 · Wherever you refer to that pin number by variable, you know exactly what data type you're getting. It might be promoted/converted implicitly or explicitly by the code which uses it, but it should behave in very clear ways. By contrast, the value in a #define is open to interpretation. The vast majority of the time, it probably won't cause you ...
Jan 19, 2017 · # define TIMER_PWM_PIN 3 // Arduino Duemilanove, Diecimila, LilyPad, etc You could try changing the 3 so that you can use another pin. It might work. For example to use pin 5, en lieu of pin 3, change the 3 to a 5, like so: # define TIMER_PWM_PIN 5 // Arduino Duemilanove, Diecimila, LilyPad, etc
"#define" is a preprocessor directive. It defines a lable and a value, that will be positioned in the preprocessed-source-code at the same place of each occurence of the label. No type is defined, so it is a basic and dumb substitution of strings before compilation.
Mar 1, 2014 · For Digital pin numbers contained in variables, either can work - such as: const int ledPin = 13; But there is one circumstance where I always use #define. It is to define analog pin numbers, since they are alphanumeric. Sure, you can hard-code the pin numbers as a2, a3, etc. all throughout the program and the compiler will know what to do with ...
I'd like to 'clean up' some code that involves several pinMode() and digitalWrite() lines by using a single line of an array. I'm very new to both arrays so I'm a bit confused. The following exampl...
Feb 9, 2021 · Including testLibrary.h for compilation lacks the definition of PIN_NUMBER. The Arduino IDE is very limited and does not offer you a way to define PIN_NUMBER globally. This is usually done with the compiler argument -DPIN_NUMBER=3. All translation units will get this argument and thus the compilation would succeed. No need to define PIN_NUMBER ...
For testing reasons, I want to get PWM output pin value. Incorrect sketch: #define pin 3 void setup() { pinMode(pin, OUTPUT); Serial.begin(9600); } void loop() { delay(1000); analogWrite(pin, 100); Serial.println(pulseIn(pin, HIGH)); // value of the PWM output pin } This sketch was created for example only.
May 31, 2022 · #define PIN_WIRE_SDA (20u) #define PIN_WIRE_SCL (21u) and Wire1. #define PIN_WIRE1_SDA (70u) #define PIN_WIRE1_SCL (71u) observe which instance is used by your library e.g. #define WIRE Wire1 or #define WIRE Wire if library is using Wire then its default i2c at pin 20 and 21. if library is using Wire1 then its i2c at pin 70 and 71 near AREF.
Mar 24, 2018 · #define VCC2 5 // define pin 5 or any other digial pin here as VCC2 #define GND2 2 // define pin 2 or any other digital pin as Ground 2 void setup() { pinMode(VCC2,OUTPUT);//define a digital pin as output digitalWrite(VCC2, HIGH);// set the above pin as HIGH so it acts as 5V pinMode(GND2,OUTPUT);//define a digital pin as output digitalWrite(GND2, LOW);// set the above pin as LOW so it acts as ...
Dec 3, 2014 · In the code, the specific pin is being selected by masking off all but the "irpin" bit in PIND, so changing irpin will pick a different bit and thus a different pin. Pin 9 is actually bit 1 of port B, not D, so see if this works: #define IRSENSOR PINB int irpin = 1; alternatly, using a reference instead of define,
