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nopnop2002 avatar nopnop2002 commented on July 2, 2024 1

I'll order Open-Smart 16 pin ILI9488 3.5inch 320x480.

It will arrive at me at the end of February.

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douginarug avatar douginarug commented on July 2, 2024

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douginarug avatar douginarug commented on July 2, 2024

Since prenticedavid/MCUFRIEND_kbv library says it only works with 28 pin shields, I did some looking for a library for the 16 pin board. I found this on YouTube from Frankie Chu.
https://www.youtube.com/watch?v=BW84pk771bU
He has a link to a google drive with an Arduino library for the ILI9488 16 pin board.
https://drive.google.com/drive/folders/1RD0MlwHU44_1awyqCGptSnMxpQIjxt85
I wired up an Arduino Pro Mini 8Mhz 3.3V and got the graphicstest.ino to work with that library.
I just wish I knew how to port it for a STM32F411CE. Ha ha. That is way beyond me right now. Maybe it will help you though.
Thanks,
Doug

20210203_100104 pro mini working

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nopnop2002 avatar nopnop2002 commented on July 2, 2024

Perhaps OPEN-SMART products cannot follow high-speed GPIO-ON and GPIO-OFF.

I think it is necessary to operate with low speed GPIO-ON and GPIO-OFF.

prenticedavid/MCUFRIEND_kbv library use high-speed GPIO ON /OFF.

Perhaps Arduino library for the ILI9488 16 pin board use low speed GPIO ON /OFF.

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douginarug avatar douginarug commented on July 2, 2024

I am just curious. What touchscreen library do you use with the Arduino-STM32-8bitTFT?

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nopnop2002 avatar nopnop2002 commented on July 2, 2024

I have never used a touch screen library.

Perhaps for this module you can read the touchscreen position with RD = Low & WR = High.
Position data is read from CX & CY.

But I haven't tried it.

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douginarug avatar douginarug commented on July 2, 2024

Did you ever receive your order for Open-Smart 16 pin ILI9488 3.5inch 320x480 display?

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nopnop2002 avatar nopnop2002 commented on July 2, 2024

I got these Open-Smart 16-pin display.

OPEN-SMART S6D1121 16Pin-Parallel
OPEN-SMART ST7775 16Pin-Parallel
OPEN-SMART ST7783 16Pin-Parallel
OPEN-SMART R61509V 16Pin-Parallel
OPEN-SMART ILI9488 16Pin-Parallel

I found that these display cannot follow high-speed GPIO-ON and GPIO-OFF.
It's hardware side issues.
The Arduino Pro Mini 8Mhz 3.3V is slow so they work.

These Open-Smart Shields work fine with high speed.

OPEN-SMART ILI9225 TFT-Shield
OPEN-SMART ILI9327 TFT-Shield
OPEN-SMART ILI9340 TFT-Shield

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