Hallo Forum,
ich habe zurzeit das Problem, ich wollte eine Temperatursensor mit einem LCD-Display verbinden, sodass ich die ergebnisse auf dem display sehen kann. (aufbau angehängt)
Das problem ist, die einzelprogramme für jeweils Temperatursensor und LCD-Anzeige funktionieren, wenn ich aber versuche die zu kombinieren, hört der Temperatursensor auf sich zu aktualisieren, und zeigt es nur mit den einzelzahlen abwechselnd blinkend das letzte Ergebnis auf dem Display an.
Code der Anzeige einzeln:
#include "Timer.h" //include timer library
Timer t; // craete a timer object
long number = 0; //declear the variables
int first_digit = 0;
int second_digit = 0;
int third_digit = 0;
int fourth_digit = 0;
int timer_event = 0;
int CA_1 = 4;
int CA_2 = 5;
int CA_3 = 6;
int CA_4 = 7;
int clk = 8;
int latch = 9;
int data = 10;
int count = 0;
int digits[4] ;
int CAS[4] = {4, 5, 6, 7};
byte numbers[10] {B11111100, B01100000, B11011010, B11110010, B01100110, B10110110, B10111110, B11100000, B11111110, B11110110};
//byte combinations for each number 0-9
void setup() {
Serial.begin(9600); //serial start and pin config
pinMode(CA_1, OUTPUT);
pinMode(CA_2, OUTPUT);
pinMode(CA_3, OUTPUT);
pinMode(CA_4, OUTPUT);
pinMode(clk, OUTPUT);
pinMode(latch, OUTPUT);
pinMode(data, OUTPUT);
digitalWrite(CA_1, HIGH);
digitalWrite(CA_2, HIGH);
digitalWrite(CA_3, HIGH);
digitalWrite(CA_4, HIGH);
Serial.println("please Enter a number from 0 to 9999");
}
void loop() {
t.update(); //timer update
if (Serial.available()) { // read from serial
t.stop(timer_event); //stop timer if anythign to read
cathode_high(); // blank the screen
String s = Serial.readString(); //read the serail value
number = (long)s.toInt(); //convert it to int
if (number > 9999) { //check the number is 0-9999
Serial.println("Please Enter Number Between 0 - 9999");
} else {
break_number(number);
timer_event = t.every(1, display_number); // start timer again
}
}
}
void break_number(long num) { // seperate the input number into 4 single digits
first_digit = num / 1000;
digits[0] = first_digit;
int first_left = num - (first_digit * 1000);
second_digit = first_left / 100;
digits[1] = second_digit;
int second_left = first_left - (second_digit * 100);
third_digit = second_left / 10;
digits[2] = third_digit;
fourth_digit = second_left - (third_digit * 10);
digits[3] = fourth_digit;
}
void display_number() { //scanning
cathode_high(); //black screen
digitalWrite(latch, LOW); //put the shift register to read
shiftOut(data, clk, LSBFIRST, numbers[digits[count]]); //send the data
digitalWrite(CAS[count], LOW); //turn on the relevent digit
digitalWrite(latch, HIGH); //put the shift register to write mode
count++; //count up the digit
if (count == 4) { // keep the count between 0-3
count = 0;
}
}
void cathode_high() { //turn off all 4 digits
digitalWrite(CA_1, HIGH);
digitalWrite(CA_2, HIGH);
digitalWrite(CA_3, HIGH);
digitalWrite(CA_4, HIGH);
}
Code des Temp-sensors einzeln (LED’s genutzt zur Temperaturdarstellung):
#include <OneWire.h>
#include <DallasTemperature.h>
// Data wire is conntec to the Arduino digital pin 4
#define ONE_WIRE_BUS 13
// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature sensor
DallasTemperature sensors(&oneWire);
float Temp = 0;
void setup(void)
{
// Start serial communication for debugging purposes
Serial.begin(9600);
// Start up the library
sensors.begin();
pinMode (2, OUTPUT);
pinMode (3, OUTPUT);
pinMode (4, OUTPUT);
pinMode (5, OUTPUT);
}
void loop(void){
// Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
sensors.requestTemperatures();
Serial.print("Celsius temperature: ");
// Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
Temp = sensors.getTempCByIndex(0);
Serial.print(Temp);
Serial.print("\n");
if (Temp < 90) {
digitalWrite (3, LOW);
digitalWrite (4, LOW);
digitalWrite (5, LOW);
digitalWrite (2, HIGH); }
if((Temp >= 90) && (Temp < 95)) {
digitalWrite (2, LOW);
digitalWrite (4, LOW);
digitalWrite (5, LOW);
digitalWrite (3, HIGH); }
if((Temp >= 95) && (Temp < 105)) {
digitalWrite (2, LOW);
digitalWrite (3, LOW);
digitalWrite (5, LOW);
digitalWrite (4, HIGH); }
if(Temp >= 105) {
digitalWrite (2, LOW);
digitalWrite (3, LOW);
digitalWrite (4, LOW);
digitalWrite (5, HIGH); }
}
ich hänge die beiden originalprogramme und das kombinierte an.
Kombiniertes programm:
#include "Timer.h" //include timer library
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 13
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
float Temp = 0;
Timer t; // craete a timer object
long number = 0; //declear the variables
int first_digit = 0;
int second_digit = 0;
int third_digit = 0;
int fourth_digit = 0;
int timer_event = 0;
int CA_1 = 4;
int CA_2 = 5;
int CA_3 = 6;
int CA_4 = 7;
int clk = 8;
int latch = 9;
int data = 10;
int count = 0;
int digits[4] ;
int CAS[4] = {4, 5, 6, 7};
byte numbers[10] {B11111100, B01100000, B11011010, B11110010, B01100110, B10110110, B10111110, B11100000, B11111110, B11110110};
//byte combinations for each number 0-9
void setup() {
Serial.begin(9600); //serial start and pin config
sensors.begin();
pinMode(CA_1, OUTPUT);
pinMode(CA_2, OUTPUT);
pinMode(CA_3, OUTPUT);
pinMode(CA_4, OUTPUT);
pinMode(clk, OUTPUT);
pinMode(latch, OUTPUT);
pinMode(data, OUTPUT);
digitalWrite(CA_1, HIGH);
digitalWrite(CA_2, HIGH);
digitalWrite(CA_3, HIGH);
digitalWrite(CA_4, HIGH);
Serial.println("please Enter a number from 0 to 9999");
}
void loop() {
sensors.requestTemperatures();
t.update(); //timer update
if (Serial.available()) { // read from serial
t.stop(timer_event); //stop timer if anythign to read
cathode_high(); // blank the screen
String s = Serial.readString(); //read the serail value
number = sensors.getTempCByIndex(0); //(long)s.toInt(); //convert it to int
if (number > 9999) { //check the number is 0-9999
Serial.println("Please Enter Number Between 0 - 9999");
} else {
break_number(number);
timer_event = t.every(1, display_number); // start timer again
}
Serial.print("Celsius temperature: ");
Temp = sensors.getTempCByIndex(0);
Serial.print(Temp);
Serial.print("\n");
}
}
void break_number(long num) { // seperate the input number into 4 single digits
first_digit = num / 1000;
digits[0] = first_digit;
int first_left = num - (first_digit * 1000);
second_digit = first_left / 100;
digits[1] = second_digit;
int second_left = first_left - (second_digit * 100);
third_digit = second_left / 10;
digits[2] = third_digit;
fourth_digit = second_left - (third_digit * 10);
digits[3] = fourth_digit;
}
void display_number() { //scanning
cathode_high(); //black screen
digitalWrite(latch, LOW); //put the shift register to read
shiftOut(data, clk, LSBFIRST, numbers[digits[count]]); //send the data
digitalWrite(CAS[count], LOW); //turn on the relevent digit
digitalWrite(latch, HIGH); //put the shift register to write mode
count++; //count up the digit
if (count == 4) { // keep the count between 0-3
count = 0;
}
}
void cathode_high() { //turn off all 4 digits
digitalWrite(CA_1, HIGH);
digitalWrite(CA_2, HIGH);
digitalWrite(CA_3, HIGH);
digitalWrite(CA_4, HIGH);
}
Kann mir da bitte einer helfen mit?
P.S. falls es einer weis und langeweile hat, es wäre toll wenn ich mindestens auch eine nachkommastelle sehen kann auf dem Display 
display.ino (2.57 KB)
Temperature.ino (1.55 KB)
TempDisplay.ino (2.95 KB)
