is it possible to check EEPROM read write data in Nextion editor.
or in real time hardware
The Nextion Editor's Debug is not going to simulate your EEPROM
Choosing to Send Command to "Nextion Device", and Connecting to your Nextion would allow you to issue repo wepo rept wept commands from the Instruction Input Area.
As the question is on possibilities
Yes, It is possible to create a Nextion side EEPROM viewer/editor,
its been done. How practical is to? well ... who knows.
More practical is understanding the EEPROM functions
wepo writing a numeric value takes 4 bytes,
wepo writing a string value takes .txt-maxl + 1 bytes
repo reading a numeric value reads 4 bytes
repo reading a string value reads .txt-maxl or until null termination
byte addresses are 0 to 1023
rept reading will read the X given number of bytes and send to MCU
wept writing will write X given number of bytes, but there's a catch
after the wept command there is a delay while Nextion preps
- then the 0xFE byte is received to say it is ready
- at this point you must write X bytes as requested
- Nextion will not leave this point until it has been done.
- Nextion will send return code after exiting the transparent data mode
Unless your MCU has received an EEPROM op failed return code
there wouldn't be any reason to doubt what was instructed to be written
has indeed been written.