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다음 Arduino Slave i2C의 예제 코드가 있습니다. 정확히 매개 변수 int howMany
의 기능은 무엇인가, 방법 void receiveEvent(int howMany)
에서매개 변수 int Arduino i2C 슬레이브 수신기의 howmany
#include <Wire.h>
void setup() {
Wire.begin(8); // join i2c bus with address #8
Wire.onReceive(receiveEvent); // register event
Serial.begin(9600); // start serial for output
}
void loop() {
delay(100);
}
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void receiveEvent(int howMany) {
while (1 < Wire.available()) { // loop through all but the last
char c = Wire.read(); // receive byte as a character
Serial.print(c); // print the character
}
int x = Wire.read(); // receive byte as an integer
Serial.println(x); // print the integer
}
https://www.arduino.cc/en/Tutorial/MasterWriter에서 촬영?