Dear Community,
i have a Nextion display, which is serial connected (TX-RX) to an arduino mega 2650. The screen shows a menu with many buttons, which sends a value to the arduino when they are clicked. The value is stored in the variable "X". I check this process with a Serial.println(X); code in the Serial Monitor. I can see that it´s always correct. So there should be no problem in the connection between the arduino and the nextion display.
After the value is stored in X, i do a switch.. case statement. Now it comes to an unlogic problem. In every case Statement i do a Serial.print("...");. From case 1 to 3 i get the information in the Serial Monitor. So the compiler is at the correct position. After Case 3 i get nothing in the Serial Monitor besides the value which is stored in X (value is correct). I hope i just got a mistake in the code, but I checked it a thousand times.
//Bibliotheken einbinden----
#include <EEPROM.h>
#include "arduinoFFT.h"
#define SAMPLES 512
#define SAMPLING_FREQUENCY 5000
arduinoFFT FFT = arduinoFFT();
unsigned int samplingPeriod = 200;
unsigned long microSeconds;
int x;
int rock;
int pop;
int klassik;
int hiphop;
int Frequenz=0;
int Drehmoment=0;
int analogPin = A0;
int avalue=0;
int Ygauge=50;
int Multibox;
double vReal[SAMPLES];
double vImag[SAMPLES];
unsigned long previousMillis =0;
const long interval = 1000;
unsigned long currentMillis = 0;
int i=0;
boolean waitformeasure = false;
boolean soften = true;
boolean tighten = false;
float turns=2;
void setup()
{
delay(1000);
//Serielle Schnittstelle startet
Serial.begin(250000);
Serial2.begin(9600);
Serial.println("EEPROM auslesen..");
EEPROM.get(0, rock);
EEPROM.get(4, pop);
EEPROM.get(8, klassik);
EEPROM.get(12, hiphop);
samplingPeriod = 1000000*(1.0/SAMPLING_FREQUENCY);
//N0 Darstellung Tonfrequenz [Hz]
//N1 Darstellung Drehmoment [Nmm]
//VA1 Darstellung Graph y=50 <==> 0Hz
Serial2.print("n0.val=" + String(Frequenz));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.print("n1.val=" + String(Drehmoment));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.print("va1.val=" + String(Ygauge));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
}
void loop()
{
Nextion_serial_listen();
delay(5);
}
void Nextion_serial_listen()
{
if(Serial2.available()>0)
{
x=Serial2.read();
Serial.print("X=\t");
Serial.println(x);
switch (x) {
case 1:
while(Serial2.available()<=0){
//Warteschleife
}
Multibox = Serial2.read();
if (Multibox == 0){
turns = 2;
Serial.println("Turns = 2");
}
else if (Multibox == 1){
turns = 1;
Serial.println("Turns = 1");
}
else if (Multibox == 2){
turns = 0.5;
Serial.println("Turns = 0,5");
}
else if (Multibox == 3){
turns = 0.25;
Serial.println("Turns = 0,25");
}
else if (Multibox == 4){
turns = 0.1;
Serial.println("Turns = 0,1");
}
else {
Serial.println("Fehlerhafter Multiboxwert");
Serial.print("Multibox= ");
Serial.println(Multibox);
turns=0;
}
break;
case 2:
if (soften==true && tighten == false){
soften=false;
tighten=true;
Serial.println("Tighten Mode");
}
else if ( soften == false && tighten == true){
soften=true;
tighten=false;
Serial.println("Soften Mode");
}
break;
case 3:
Serial.println("messen..");
waitformeasure=true;
avalue = analogRead(analogPin);
while ((avalue<390 && avalue>310) && (waitformeasure==true)){
avalue = analogRead(analogPin);
//Serial.print(avalue);
}
Serial.println("start measuring..");
waitformeasure = false;
i=0;
while (i<=SAMPLES-1){
microSeconds = micros();
vReal[i] = analogRead(0);
vImag[i] = 0;
i=i+1;
while(micros() < (microSeconds + samplingPeriod)){
//wait..
}
}
Serial.println("Fast Fourier Transformation..");
FFT.Windowing(vReal, SAMPLES, FFT_WIN_TYP_HAMMING, FFT_FORWARD);
FFT.Compute(vReal,vImag, SAMPLES, FFT_FORWARD);
FFT.ComplexToMagnitude(vReal,vImag, SAMPLES);
double peak = FFT.MajorPeak(vReal, SAMPLES, SAMPLING_FREQUENCY);
peak = peak * 0.97560976; //Fehlerkorrekturfaktor
Frequenz=peak;
Serial.println(peak);
Serial.println(Frequenz);
Serial2.print("n0.val=" + String(Frequenz));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
for (int n=0; n<SAMPLES-1; n++){ //Darstellung der wahren Messwerte
Ygauge = vReal[n];
//Serial.println(Ygauge);
Serial2.print("va1.val=" + String(Ygauge-305));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
}
Ygauge = 50;
Serial2.print("va1.val=" + String(Ygauge));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
break;
case 4:
Serial.println("Storage");
Serial2.print("n3.val=" + String(rock));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.print("n4.val=" + String(pop));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.print("n5.val=" + String(klassik));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.print("n6.val=" + String(hiphop));
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);
break;
case 5:
//TON E1
Serial.println("Ton E1");
break;
case 6:
//TON F1#
Serial.println("Ton F1#");
break;
case 7:
//TON F1
Serial.println("Ton F1");
break;
case 8:
//TON G1
Serial.println("Ton G1");
break;
case 9:
//TON G1#
Serial.println("Ton G1#");
break;
case 10:
//TON A1
Serial.println("Ton A1");
break;
case 11:
//TON A1#
Serial.println("Tighten Mode");
break;
case 12:
//TON B1
Serial.println("Ton B1");
break;
case 13:
//TON C2
Serial.println("Ton C2");
break;
case 14:
//TON C2#
Serial.println("Ton C2#");
break;
case 15:
//TON D2
Serial.println("Ton D2");
break;
case 16:
//TON D2#
Serial.println("Ton D2#");
break;
case 17:
//TON E2
Serial.println("Ton E2");
break;
//SNAREdrum------------------------------------------------------
case 18:
//TON C3
Serial.println("Ton C3");
break;
case 19:
//TON C3#
Serial.println("Ton C3#");
break;
case 20:
//TON D3
Serial.println("Ton D3");
break;
case 21:
//TON D3#
Serial.println("Ton D3#");
break;
case 22:
//TON E3
Serial.println("Ton E3");
break;
case 23:
//TON F3
Serial.println("Ton F3");
break;
case 24:
//TON F3#
Serial.println("Ton F3#");
break;
case 25:
//TON G3
Serial.println("Ton G3");
break;
case 26:
//TON G3#
Serial.println("Ton G3#");
break;
case 27:
//TON A3
Serial.println("Ton A3");
break;
case 28:
//TON A3#
Serial.println("Ton A3#");
break;
case 29:
//TON B3
Serial.println("Ton B3");
break;
case 30:
//TON C4
Serial.println("Ton C4");
break;
case 31:
//TON C4#
Serial.println("Ton C4#");
break;
case 32:
//TON D4
Serial.println("Ton D4");
break;
//Tomdrum----------------------------------------------------
case 33:
//TON A1
Serial.println("Ton A1");
break;
case 34:
//TON A1#
Serial.println("Ton A1#");
break;
case 35:
//TON B1
Serial.println("Ton B1");
break;
case 36:
//TON C2
Serial.println("Ton C2");
break;
case 37:
//TON C2#
Serial.println("Ton C2#");
break;
case 38:
//TON D2
Serial.println("Ton D2");
break;
case 39:
//TON D2#
Serial.println("Ton D2#");
break;
case 40:
//TON E2
Serial.println("Ton E2");
break;
case 41:
//TON F2
Serial.println("Ton F2");
break;
case 42:
//TON F2#
Serial.println("Ton F2#");
break;
case 43:
//TON G2
Serial.println("Ton G2");
break;
case 44:
//TON G2#
Serial.println("Ton G2#");
break;
case 45:
//TON A2
Serial.println("Ton A2");
break;
case 46:
//TON A2#
Serial.println("Ton A2#");
break;
case 47:
//TON B2
Serial.println("Ton B2");
break;
case 48:
//TON C3
Serial.println("Ton C3");
break;
case 49:
//TON C3#
Serial.println("Ton C3#");
break;
case 50:
//TON D3
Serial.println("Ton D3");
break;
case 51:
//TON D3#
Serial.println("Ton D3#");
break;
case 52:
//TON E3
Serial.println("Ton E3");
break;
case 53:
//TON F3
Serial.println("Ton F3");
break;
case 54:
//TON F3#
Serial.println("Ton F3#");
break;
case 55:
//TON G3
Serial.println("Ton G3");
break;
case 56:
//TON G3#
Serial.println("Ton G3#");
break;
case 57:
//TON A3
Serial.println("Ton A3");
break;
case 58:
//TON A3#
Serial.println("Ton A3#");
break;
case 59:
//TON B3
Serial.println("Ton B3");
break;
default:
Serial.println("NIx");
break;
}
}
}
And there is a picture from the Serial Monitor:
Thankyou for your help!
