Associate III

Question

7 Inch Display interface with STM32F746IGT custom development board issues?

9 replies
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Hai....,

I am using Waveshare STM32F746IGTx Development board and Waveshare 7 inch(1024x600) Capacitive Touch display QUADSPI (MT25QL128ABA1ESE-0SIT Micron Technology) own development board STMCube IDE and Custom External loader file.

After upload the program i am facing following error

Erasing memory corresponding to segment 0:

Erasing internal memory sectors [0 4]

Erasing memory corresponding to segment 1:

Erasing external memory sectors [0 1]

Download in Progress:

File download complete

Time elapsed during download operation: 00:00:17.751

Verifying ...

Error: Data mismatch found at address 0x90000000 (byte = 0x99 instead of 0x00)

Error: Download verification failed

Encountered Error when opening C:\ST\STM32CubeIDE_1.6.0\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.externaltools.cubeprogrammer.win32_1.6.0.202101291314\tools\bin\STM32_Programmer_CLI.exe

Error in STM32CubeProgrammer

Debugger connection lost.

Shutting down...

where i am doing mistake, please give your suggestion.

Thanks & Regards

M. Govind

This topic has been closed for replies.

Tesla DeLorean

Guru

0x99 suggests the QSPI device isn't responding. Could be wrong command address, pin config, etc.

Make sure your BSP code is fully tested and functional. Do this outside the loader.

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Tesla DeLorean

Guru

Outside of CubeIDE you can use STM32 Cube Programmer directly, you should be able to select the External Loader (EL) and check you can read the QSPI content. Blank sections should be 0xFF, if you read 0x99 everywhere, again suggests an issue with the loader vs hardware

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GMano.1Author

Associate III

Thanks for your replay......

After your replay we find out the connection mistakes.

I am using following QUADSPI PIN CONFIGURATION:

PF9 -------> IO1

PF8 --------> IO0

PB2---------> CLK

PB6---------> CS

PF7 ---------> IO2

PF6 ---------> IO3

Now it show 0xFF in STM32 cube programer select Custom External loader N25Q128A_STM32F7-PB2-PF8-PF9-PF7-PF6-PB6-CLIVEONE, . But after upload the code (Using same External Loader ) showing error following bellow

Error: Data mismatch found at address 0x90000000 (byte = 0xDD instead of 0x00)

again go to check in stm32 cube programmer it show 0xDD select same External Loader.

without adding External Loader after uploading the program in Debug mode display showing white colour and four corners are Black colour it's looks like a Ellipses in shape.

I am change other two different PIN configuration of QUADSPI but it not work.

If i use inbuild N25Q128A_STM32F746G-DISCO External loader while uploading it will take to much time after showing following error.But it working fine in STM32 Cube Programer it show 0xFF.

Erasing memory corresponding to segment 0:

Erasing internal memory sectors [0 4]

Erasing memory corresponding to segment 1:

Erasing external memory sector 0

Error: failed to erase memory

Encountered Error when opening C:\ST\STM32CubeIDE_1.6.0\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.externaltools.cubeprogrammer.win32_1.6.0.202101291314\tools\bin\STM32_Programmer_CLI.exe

Error in STM32CubeProgrammer

Debugger connection lost.

Shutting down...

If problem in External Loader please give me an idea to create own External Loader or what i need to change the configuration (Hardware connections and software) for existing available External loaders, where can i get External Loaders for bellow mentioned microcontroller .

( QUADSPI : MT25QL128ABA1ESE-0SIT Micron Technology Microcontroller STM32746IG)

Give me a suggestion for simple program for display any one ( Image or Colour Button ) in Display with TouchGFX frame work for that what are the basic configurations are we need to make .......? for display working or not condition check, Example : FMC_SDRAM, QUADSPI, DMA2, etc......,

I make all configuration in stm32 cubeMX and STM32 Cube IDE software changes are following through related tutorial videos in youtube. It's not work out i am very tide to find out the problem.

Please give me a suggestion to rectify my problem............,

Thanks & Regards

M.Govind

GMano.1Author

Associate III

Thanks for your replay......

After your replay we find out the connection mistakes.

I am using following QUADSPI PIN CONFIGURATION:

PF9 -------> IO1

PF8 --------> IO0

PB2---------> CLK

PB6---------> CS

PF7 ---------> IO2

PF6 ---------> IO3

Now it show 0xFF in STM32 cube programer select Custom External loader N25Q128A_STM32F7-PB2-PF8-PF9-PF7-PF6-PB6-CLIVEONE, . But after upload the code (Using same External Loader ) showing error following bellow

Error: Data mismatch found at address 0x90000000 (byte = 0xDD instead of 0x00)

again go to check in stm32 cube programmer it show 0xDD select same External Loader.

without adding External Loader after uploading the program in Debug mode display showing white colour and four corners are Black colour it's looks like a Ellipses in shape.

I am change other two different PIN configuration of QUADSPI but it not work.

If i use inbuild N25Q128A_STM32F746G-DISCO External loader while uploading it will take to much time after showing following error.But it working fine in STM32 Cube Programer it show 0xFF.

Erasing memory corresponding to segment 0:

Erasing internal memory sectors [0 4]

Erasing memory corresponding to segment 1:

Erasing external memory sector 0

Error: failed to erase memory

Encountered Error when opening C:\ST\STM32CubeIDE_1.6.0\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.externaltools.cubeprogrammer.win32_1.6.0.202101291314\tools\bin\STM32_Programmer_CLI.exe

Error in STM32CubeProgrammer

Debugger connection lost.

Shutting down...

If problem in External Loader please give me an idea to create own External Loader or what i need to change the configuration (Hardware connections and software) for existing available External loaders, where can i get External Loaders for bellow mentioned microcontroller .

( QUADSPI : MT25QL128ABA1ESE-0SIT Micron Technology Microcontroller STM32746IG)

Give me a suggestion for simple program for display any one ( Image or Colour Button ) in Display with TouchGFX frame work for that what are the basic configurations are we need to make .......? for display working or not condition check, Example : FMC_SDRAM, QUADSPI, DMA2, etc......,

I make all configuration in stm32 cubeMX and STM32 Cube IDE software changes are following through related tutorial videos in youtube. It's not work out i am very tide to find out the problem.

Please give me a suggestion to rectify my problem............,

Thanks & Regards

M.Govind

Tesla DeLorean

Guru

It is using the Micron part and not the Winbond one?

Does your own BSP QSPI code work on this board/part combination? Have you tested Read, Write and Erase from your own application code?

When erased you should be able to see 0xFF pattern throughout memory space.

Confirmed WaveShare schematic as showing PB2,PB6, PF6,PF7,PF8 and PF9

746G-DISCO uses PB2,PB6, PD11,PD12,PE2,PD13

769I-DISCO uses PB2,PB6, PC9,PC10,PE2,PD13

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GMano.1Author

Associate III

Thanks for your support........, Yes i am using PB2,PB6, PF6,PF7,PF8 and PF9 and Custom External Loader.

Yes... I have to tested Read, Write and Erase in STM32 Cube Programmer only working fine.

After the Erased it show 0xFFFFFFFF pattern throughout memory space,

Now code upload without any Error.

But after upload the code Display showing White Colour and four corners are Black colours, Connection are made as per Waveshare given schematic diagram.

Please find the attachment of Error Display Image for your reference.

Please help to rectify for this problem.

And kindly explain " #include "../Components/n25q128a/n25q128a.h" " we should enter folder path like this, how to select file path

Thanks & Regards

M.Govind

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