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nopnop2002 / Arduino-STM32-8bitTFT

8bit parallel TFT Library for Arduino_Core_STM32
Apache License 2.0
18 stars 8 forks source link

16 pin ILI9488 3.5inch 320x480 with STM32F411CE won't work for me. #6

Closed douginarug closed 3 years ago

douginarug commented 3 years ago

I've got an Open-Smart 16 pin ILI9488 3.5inch 320x480 "expansion module" from e-bay.
https://www.ebay.com/itm/3-5inch-TFT-Board-Expansion-Module-LCD-Touch-Screen-For-R3-Nano-Mega2560-Hot/233641518844?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 I hooked it up to a Black Pill STM32F411CE.
I looked at the .cpp and saw it briefly mentioned the ILI9488 but I'm not sure if it supports it. (I don't really understand the code.) I'm probably doing something wrong. I ran the GraphicsTest_320x480_SMT32.ino and it looks like it is communicating with each other but there is nothing on the tft screen. In the Serial Monitor I am seeing this;

Arduino-STM32-8bitTFT readReg16(0)=0x0 readReg32(A1)=0x3093 readReg40(BF)=0x9393 readReg32(D4)=0x0 readReg40(EF)=0x0 readReg32(FE)=0x0 readReg32(04)=0x548066 readReg32(D3)=0x9488 Device ID: 0x9488 Width: 320 Height: 480 Benchmark Time (microseconds) Screen fill 2115372 Text 77333 Lines 962493 Horiz/Vert Lines 182033 Rectangles (outline) 108761 Rectangles (filled) 5310698 Circles (filled) 1258549 Circles (outline) 411223 Triangles (outline) 194504 Triangles (filled) 1925425 Rounded rects (outline) 197330 Rounded rects (filled) 5885654 Done!

20210127_100740 20210127_100749 20210127_100914 20210127_101018

Thank you in advance for any help you could give me. Doug

nopnop2002 commented 3 years ago

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

It will arrive at me at the end of February.

douginarug commented 3 years ago

Wow, that would be great. It is very nice of you to do that. I really appreciate you taking the time to help. Doug

Sent from my phone.

-------- Original message -------- From: nopnop2002 notifications@github.com Date: 1/27/21 5:27 PM (GMT-05:00) To: nopnop2002/Arduino-STM32-8bitTFT Arduino-STM32-8bitTFT@noreply.github.com Cc: douginarug douginarug@hotmail.com, Author author@noreply.github.com Subject: Re: [nopnop2002/Arduino-STM32-8bitTFT] 16 pin ILI9488 3.5inch 320x480 with STM32F411CE won't work for me. (#6)

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

It will arrive at me at the end of February.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHubhttps://github.com/nopnop2002/Arduino-STM32-8bitTFT/issues/6#issuecomment-768620077, or unsubscribehttps://github.com/notifications/unsubscribe-auth/ABXEHEQAUHHOEZMANINFBADS4CHMVANCNFSM4WVPCJDA.

douginarug commented 3 years ago

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

nopnop2002 commented 3 years ago

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.

douginarug commented 3 years ago

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

nopnop2002 commented 3 years ago

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.

douginarug commented 3 years ago

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

nopnop2002 commented 3 years ago

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