3.2" TFT Shield with resistive touch (HCARDU0109 & HCARDU0111)

[andrew]

Not for this display I'm afraid as it uses a buffered parallel connection. The non-shield version uses an SPI interface if that is of any use:

viewtopic.php?f=75&t=2843

Although note that the touch screen on this display requires a separate interface.

[ChrisSharp]

I should have waited for this reply before I bought one. Hey-ho.

[andrew]

Yeah sorry I think that was a case of bad timing. We can always arrange a return if you don’t want it.

[ChrisSharp]

No problem,

Before I start the struggle. Another basic question. Are the TX and RX pins available. I'd like to use a MAX485 transfer module with this.

Cheers

[andrew]

Another basic question. Are the TX and RX pins available

I assume on the Arduino? If so then yes, according to the schematic the Tx and Rx pins (and digital pin 2) on the shield aren't connected to anything.

You will have to find some way of getting access to the Arduinos header though as the shield physically blocks access to it.

[Obrad21]

Hello, i am new to display and i have recently gotten myself an open-smart ili9327 3.2 inch display and my wish is to use it with lvgl to create a keyboard. The problem is when i connect it all and calibrate the display only one corner of the display works as touchscreen as a scaled down version. I draw in the middle of that area and it shows me im drawing on the middle of the display. Every other part except that corner is unresponsive. Could it be a wiring problem since i tried adafruits touch test ans every part worked.

[RGV250]

Hi,
I have just tried to use the library for display HCARDU109 and get so many errors I am not sure where to start.

In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:77:0:
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\hardware/HX8352B_Shield.cpp:736:6: error: prototype for 'void Display::_DWriteCol(int16_t, int16_t, uint8_t, const char*)' does not match any in class 'Display'
void Display::_DWriteCol(int16_t x, int16_t y, uint8_t ByteRows, const char Data[])
^~~~~~~
In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.h:92:0,
from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:64:
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\hardware/HX8352B_Shield.h8: error: candidate is: void Display::_DWriteCol(int16_t, int16_t, uint8_t, const uint8_t*)
void _DWriteCol(int16_t x, int16_t y, uint8_t ByteRows, const uint8_t *Data);
^~~~~~~~~~
In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:77:0:
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\hardware/HX8352B_Shield.cpp:780:6: error: prototype for 'void Display::_DPlotCol(int16_t, int16_t, uint8_t, const char*)' does not match any in class 'Display'
void Display::_DPlotCol(int16_t x, int16_t y, uint8_t ByteRows, const char Data[])
^~~~~~~
In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.h:92:0,
from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:64:
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\hardware/HX8352B_Shield.h8: error: candidate is: void Display::_DPlotCol(int16_t, int16_t, uint8_t, const uint8_t*)
void _DPlotCol(int16_t x, int16_t y, uint8_t ByteRows, const uint8_t *Data);
^~~~~~~~~
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp: In member function 'void HCDisplay::Contrast(uint8_t)':
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:243:2: error: 'DContrast' was not declared in this scope
DContrast(mode);
^~~~~~~~~
C:\Users\Admin\Documents\Arduino\libraries\HCDisplay\HCDisplay.cpp:243:2: note: suggested alternative: 'Contrast'
DContrast(mode);
^~~~~~~~~
Contrast

exit status 1

Compilation error: exit status 1

Regards,
Bob

[andrew]

I have just tried to use the library for display HCARDU109 and get so many errors I am not sure where to start.

My apologies for the slow response. For some odd reason your post was flagged by our forums approvals system and was missed until now.

It looks like the HX8352B support got broken by the V1.2.1 update. I have updated the library to version (V1.2.2) which should hopefully fix this. This update is currently available via the first post on the libraries forum thread here:

viewtopic.php?f=58&t=2827&p=7132

Assuming you still want to try it, just download the new version (1.2.2), unzip it, and copy it over your existing version.
Any feedback will be appreciated. I will upload to github and PlatformIO once I’m sure the issue has been fixed.

[RGV250]

Hi,
I am still having issues. I tried copying it over and then deleting the directories and installing it and still does not compile.

Bob

Arduino: 1.8.12 (Windows 10), Board: "Arduino Uno"

C:\Users\Admin\AppData\Local\Temp\arduino_modified_sketch_793339\HCDisplay_Big_Demo.ino: In function 'void Intro()':

C:\Users\Admin\AppData\Local\Temp\arduino_modified_sketch_793339\HCDisplay_Big_Demo.ino:132:60: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

PrintCentre("Hello!", Scale, ResY / 2 - (Scale * 8 / 2));

^

C:\Users\Admin\AppData\Local\Temp\arduino_modified_sketch_793339\HCDisplay_Big_Demo.ino:138:53: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

PrintCentre("Hobby Components", 2, (ResY / 2) - 68);

^

C:\Users\Admin\AppData\Local\Temp\arduino_modified_sketch_793339\HCDisplay_Big_Demo.ino:139:47: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

PrintCentre("HCDisplay", 4, (ResY / 2) - 36);

^

C:\Users\Admin\AppData\Local\Temp\arduino_modified_sketch_793339\HCDisplay_Big_Demo.ino:140:50: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

PrintCentre("Library Demo", 2, (ResY / 2) + 12);

^

In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:77:0:

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\hardware/HX8352B_Shield.cpp:736:6: error: prototype for 'void Display::_DWriteCol(int16_t, int16_t, uint8_t, const char*)' does not match any in class 'Display'

void Display::_DWriteCol(int16_t x, int16_t y, uint8_t ByteRows, const char Data[])

^~~~~~~

In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.h:92:0,

from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:64:

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\hardware/HX8352B_Shield.h8: error: candidate is: void Display::_DWriteCol(int16_t, int16_t, uint8_t, const uint8_t*)

void _DWriteCol(int16_t x, int16_t y, uint8_t ByteRows, const uint8_t *Data);

^~~~~~~~~~

In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:77:0:

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\hardware/HX8352B_Shield.cpp:780:6: error: prototype for 'void Display::_DPlotCol(int16_t, int16_t, uint8_t, const char*)' does not match any in class 'Display'

void Display::_DPlotCol(int16_t x, int16_t y, uint8_t ByteRows, const char Data[])

^~~~~~~

In file included from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.h:92:0,

from C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:64:

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\hardware/HX8352B_Shield.h8: error: candidate is: void Display::_DPlotCol(int16_t, int16_t, uint8_t, const uint8_t*)

void _DPlotCol(int16_t x, int16_t y, uint8_t ByteRows, const uint8_t *Data);

^~~~~~~~~

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp: In member function 'void HCDisplay::Contrast(uint8_t)':

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:243:2: error: 'DContrast' was not declared in this scope

DContrast(mode);

^~~~~~~~~

C:\Users\Admin\Documents\Arduino\libraries\HCDisplay-main\HCDisplay.cpp:243:2: note: suggested alternative: 'Contrast'

DContrast(mode);

^~~~~~~~~

Contrast

exit status 1
Error compiling for board Arduino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[andrew]

Hi,
I am still having issues. I tried copying it over and then deleting the directories and installing it and still does not compile.

Bob

Sorry about that. I’ve now re-uploaded it to the same place. It’s still version 1.2.2 but dated 12/06/24:

viewtopic.php?f=58&t=2827&p=7132

Hopefully all errors are fixed now!