hi im having a serial problem…
my application is not responding with arduino even if it is connected…
something wrong with mySerial…
hope anyone could help me…
thx in advance!!
#include <SoftPWM.h>
#include <SoftPWM_timer.h>
#include <LiquidCrystal.h>
#include <SoftwareSerial.h>
SoftwareSerial mySerial(A1, A2); // RX, TX correct tested
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
String readString;
int tempPin = A4; // the output pin of LM35
int fan = A5; // the pin where fan is
int temp;
int tempMin = 20; // the temperature to start the fan
int tempMax = 40; // the maximum temperature when fan is at 100%
int fanSpeed;
int fanLCD;
void setup() {
SoftPWMBegin();
pinMode(fan, OUTPUT);
pinMode(tempPin, INPUT);
pinMode(remote, INPUT);
// digitalWrite(fan,HIGH);
lcd.begin(16,2);
Serial.begin(9600);
mySerial.begin(9600);
}
void loop() {
temp = readTemp(); // get the temperature
if (temp < tempMin) { // if temp is lower than minimum temp
SoftPWMSet(fan,0);
// digitalWrite(fan, LOW);
}
while (Serial.available()) {
delay(3);
char c = Serial.read();
readString += c;
}
if (readString.length() >0) {
Serial.println(readString);
mySerial.println(readString);
if (readString == "on") {
if((temp >= tempMin) && (temp <= tempMax)) { // if temperature is higher than minimum temp
fanSpeed = map(temp, tempMin, tempMax, 101, 255); // the actual speed of fan
fanLCD = map(temp, tempMin, tempMax, 0, 100); // speed of fan to display on LCD
// analogWrite(fan, fanSpeed); // spin the fan at the fanSpeed speed
SoftPWMSet(fan, fanSpeed);
// Serial.println(fanSpeed);
}
}
}
if (readString == "off") {
fanLCD = map(temp, tempMin, tempMax, 0, 0);
SoftPWMSet(fan,0); // digitalWrite(fan, LOW);
readString="";
}
lcd.print("TEMP: ");
lcd.print(temp); // display the temperature
lcd.write(0b11011111);
lcd.print("C ");
lcd.setCursor(0,1); // move cursor to next line
lcd.print("FANS: ");
lcd.print(fanLCD); // display the fan speed
lcd.print("%");
delay(200);
lcd.clear();
}
int readTemp() { // get the temperature and convert it to celsius
temp = analogRead(tempPin);
return temp * 0.48828125;
}
