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PWM LED Control using Android serial emulator
/* buildcircuit.com*/
int ledPin = 11;
String inString = ""; // string to hold input
int value;
void setup() {
// Initialize serial communications:
Serial.begin(9600);
}
void loop() {
// Read serial input:
while (Serial.available() > 0) {
int inChar = Serial.read();
if (isDigit(inChar)) {
// convert the incoming byte to a char
// and add it to the string:
inString += (char)inChar;
}
// if you get a newline, print the string,
// then the string's value:
if (inChar == '?') {
Serial.print("Value:");
// Serial.println(" ");
Serial.println(inString.toInt());
value = inString.toInt();
if (value>255)
{
//value = 255;
Serial.println("Enter 0-255");
Serial.println(" ");
// analogWrite(ledPin, value);
for(value = 0 ; value <= 255; value +=5) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, value);
// wait for 30 milliseconds to see the dimming effect
delay(30);
}
inString = " ";
}
//Serial.print("String: ");
// Serial.println(inString);
// clear the string for new input:
else if (value==0) {
for(value = inChar ; value = 0; value -=5) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, value);
delay(30);
}
value == 0;
analogWrite(ledPin, value);
}
else {
inString = " ";
analogWrite(ledPin, value);
}
}
}
}
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