STM32 MCUs TouchGFX and GUI

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STM32F4 Discovery with OV3640/OV5642 camera module

Posted on January 24, 2013 at 08:05Hi,I am using STM32F4 discovery board and ported STM32_Eval DCMI(From OV2640)example to work with OV3640.I used OV3640 to grab RGB image using settings from http://www.arducam.com/download/library QVGA setting. I c...

mahesh23 by Associate
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  • 9 replies
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DMA2D and LTDC double buffering

Hi everybody,I'm developing a simple gui on an STM32F429 microcontroller with the use of the STemWin grapich library. Everything is working well till I'm using just one framebuffer; now I would like to use double buffering to optimize the interface a...

andrea.l by Associate
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  • 5 replies
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TouchGFX task stuck at DMA transfer

Hello there,I have a problem with a stuck TouchGFX task. When the fault occurs, the TouchGFX task uses almost 100% CPU time and completly prevents lower priority tasks from executing. It seems to be stuck at a DMA transfer, altering between LockFreeD...

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Resolved! How it works the return??

Hello all,I'm using the HAL library for the camera, specifically I'm using the function: HAL_StatusTypeDef HAL_DCMI_Start_DMA(DCMI_HandleTypeDef *hdcmi, uint32_t DCMI_Mode, uint32_t pData, uint32_t Length)In the function are many return HAL_ERROR, an...

BTurc.2 by Senior
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  • 5 replies
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DCMI DMA interrupt callback

Hi everyone,I have tried to get image data through DCMI module and transmit to the external graphics memory FT812. However, the MCU get never DMA callback after started although the camera signals can be seen at pins. The DMA handle keeps always on b...