Unable to Read Strings Back (readStr())

[trulyBent]

Seithan;

I've run into the same problem as in issue #24. As you suggested there, I modified the EasyNextionLibrary.cpp for ERROR, ERROR1, ERROR2, and ERROR3 and now I'm getting ERROR2 each time I try to read back a string (line 129, if 0x70 is not detected). The odd thing is that I was able to read them back previously, but I must have changed something unwittingly and messed things up.

• I lengthened the wait time on line 128 from 100UL to 200UL, but it made no difference.
• I have checked that the commons (GND) are the same for both the Nextion and the MKRZero board (actually a P1AM-GPIO board).
• I've tried different baud rates, 4800 to 19200, but that doesn't seem to make any difference either.
• The signals to/from the Nextion are passing through 3.3V to 5V level shifters.

Thanks for your time in this. Otherwise a great library

[trulyBent]

BTW, when I compile my code I'm getting these warnings:

C:\Users\User\Documents\Arduino\libraries\Easy_Nextion_Library\src\EasyNextionLibrary.cpp: In member function 'String EasyNex::readStr(String)': C:\Users\User\Documents\Arduino\libraries\Easy_Nextion_Library\src\EasyNextionLibrary.cpp:144:48: warning: comparison is always false due to limited range of data type [-Wtype-limits] if(_tempChar == 0xFF || _tempChar == 0xFFFFFFFF){ // If the read byte is the end command byte, __________________________________________^ C:\Users\User\Documents\Arduino\libraries\Easy_Nextion_Library\src\EasyNextionLibrary.cpp: In member function 'uint32_t EasyNex::readNumber(String)': C:\Users\User\Documents\Arduino\libraries\Easy_Nextion_Library\src\EasyNextionLibrary.cpp:245:46: warning: comparison is always false due to limited range of data type [-Wtype-limits] if(_tempChar == 0xFF || _tempChar == 0xFFFFFFFF){ // If the read byte is the end command byte, __________________________________________^

Just thought you might want to see that

[Seithan]

try to replace

if(_tempChar == 0xFF || _tempChar == 0xFFFFFFFF){  // If the read byte is the end command byte, 

with

 if(_tempChar == 0xFF || _tempChar == 0x100){  // If the read byte is the end command byte,

in 144 and 245 lines at : src/EasyNextionLibrary.cpp