About KM.8

KM.8 · 2019-03-24

I am getting pixel data to the stm32. I am reaching the "end of frame flag clearing" at:stm32l4xx_hal_dcmi.c ----> HAL_DCMI_IRQHandler() ----> (line 811)__HAL_DCMI_CLEAR_FLAG(hdcmi, DCMI_FLAG_FRAMERI);I am simply checking cameraBuffer[] pixel array u...

KM.8 · 2018-10-14

Hello,I am trying to get a single image the NUCLEO-L496ZG board with a OV7670 CMOS camera sensor using the DCMI HAL library.I am trying to read a single image and write to a USB flash drive connected to the NUCLEO board.I have been trying to use mult...

KM.8 · 2018-09-17

Hello,I am using the stm32L4R5ZI Nucleo board with a MT9V024 camera sensor and a USB drive.I am using the HAL/STM32cubeMX library for the DCMI functionality using 10-bit parallel data with HSync and VSync as well (13 wires with 10-bit+Vsync+Hsync+DCM...

KM.8 · 2019-03-28

thank you!

KM.8 · 2019-03-27

I am using the following link to verify the images. The BITMAP file writing is still incorrect, but the DCMI/DMA interface is working correctly with the MT9V024 XMCLK Clock of 27MHz.http://rawpixels.net/

KM.8 · 2019-03-27

I finished the interface between the MT9V024 camera sensor and the stm32L496ZG NUCLEO BOARD.The issues were:1) Hsync and Vsync were "when data is valid" for MT9V024 output. I had to make DCMI active low for both Hsync&Vsync since DCMI uses Hsync&...

KM.8 · 2019-03-27

Attached are the register outputs.Error stems from "stm32l4xx_hal_dma.c" HAL_DMA_Abort_IT(), line 625hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER;I am at a loss on how the DMA is not working with this camera.I will continue to check the clock, Hync, Vsync...

KM.8 · 2019-03-26

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Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?

How do I diagnose the DCMI communicating with a OV7670 sensor when I am not receiving data?

STM32L4R5ZI is hitting "HardFault_Handler" after

Re: Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?

Re: Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?

Re: Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?

Re: Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?

Re: Are there in-depth ways to investigate why HAL_DCMI_Start_DMA() is not putting data into the"*pdata" pixel buffer?