Serial2 stopped working #66
Description
Hello,
I appreciate that you put so much effort into making Nextion easy to use with your library. It is elegant.
I have used EasyNex myNex(Serial2) with ESP32 for the last two years, and it used to work perfectly. Nevertheless, It stopped yesterday when I tried it again.
Here is an example of how I used to use it: The Nextion first restarted with ESP32 and then went to page home.
This code used to work very well till yesterday.
I tried:
1- Use another ESP32 board ; not work. I still read what I print via the serial monitor.
2- I re-upload the code to an old ESP32, which worked before I flushed it and uploaded the code again. The MCU did not communicate after reuploading the code.
3- I used another Nextion display, it did not work.
4- Use the default Serial pins
EasyNex myNex(Serial);
It worked.
5- I used Arduino boards, Mega and Giga R1 WiFi with EasyNex myNex(Serial2) . It worked perfectly.
#include "EasyNextionLibrary.h" // Include EasyNextionLibrary
EasyNex myNex(Serial2); // Pin 16 = RXD2, Pin 17= TXD2
void setup() {
Serial.begin(115200);
delay(100);
Serial.println("Begin...");
delay(1000);
myNex.begin(115200); // UART 2); // Start with nextion bauds for serial communication.
Serial.println("reset1...");
myNex.writeStr("rest");
delay(1000); // wait till Nextion is restarted
myNex.writeStr("page home"); // Go to page home.
}
void loop() {
//Put your main code here, to run repeatedly:
Serial.println("loop...");
delay(1000);
}
Then I used hardware serial between the EasyNex myNex(Serial2) as follows and it worked with all boards and displays.
#include <EasyNextionLibrary.h>
// Define the RX and TX pins for Serial 2
#define RXD2 16
#define TXD2 17
HardwareSerial mySerial(2); // Initialize Serial 2
EasyNex myNex(mySerial); // Pass the HardwareSerial object to EasyNex
void setup() {
Serial.begin(115200);
Serial.println("Begin...");
delay(1000);
mySerial.begin(115200, SERIAL_8N1, RXD2, TXD2);
// Initialize the EasyNex object
myNex.begin(115200);
//myNex.begin(115200); // UART 2); // Start with nextion bauds for serial communication.
Serial.println("reset1...");
myNex.writeStr("rest");
Serial.println("we go home...");
delay(1000); // wait till Nextion is restarted
myNex.writeStr("page home");
delay(100);
}
void loop() {
Serial.println("loop...");
delay(1000);
}
Would you please advise if something is wrong and why it doesn't work as it does in the fashion way?
Thanks for any help.