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Serial Communication: Serial communication is a communication process wherein data transfer occurs by transmitting data one bit at a time in sequential order over a computer bus or a communication channel. It is the most widely used approach to transfer information between data processing equipment and peripherals.
Arduino Uart Serial Communication
Serial communications can be used in many ways, but in this situation we will use it to turn off and on an LED.
Just add an LED to pin 13 and ground. Then connect your USB cable. Create an integer to store the incoming serial byte. I decided to name it 'inByte' In the void setup, set pin 13 as an output and use 'Serial.begin(< baud rate >);' to initiate the serial communication. We used 9600bits per second, so we added - Serial.begin(9600); in the void loop we first need to know when a byte is available to be read. So, we use 'Serial.available()' This function returns the number of bytes that are available to be read. So, if we use 'if(Serial.available() > 0)', we know there is at least one byte that we can read. inside that if statement, we need to read the byte and store it for later use. we will use 'Serial.read()', which will read the byte. then we will save it to inByte. In total, this line read: inByte = Serial.read(); Yamaha atv repair manuals free. While still being inside the main if statement (<'if(Serial.available() > 0)>) we add if statements. To read or write a letter to a variable, we will put the letter in single quotation marks. We wanted our LED to turn on if we sent an 'a' to the Arduino. Thus, our if statement read: 'if(inByte 'a')' inside the if statement we added set the pin to HIGH. Also, we used 'Serial.println()' so that the arduino will notify us, right within the Serial monitor, that it has read an 'a' and has turned on the LED. This if statement looked like this: if(inByte 'a') { // byte is 'a' digitalWrite(13, HIGH); Serial.println('LED - On'); } We also wanted the LED to turn off if any other letter was read. so we added an else statement which turned the LED off. This all may seem confusing, but it is easier to understand if you look at the final code on the next page. Comments are closed.
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