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The DMA impact of SPI on ETH in STM32H7

Hi All.In STM32H743, if ICache is enabled and DCache is turned off, SPI frequently uses DMA to transfer data(SPI transmission interval is within 10ms), and ETH may experience transmission lag; If ICache and DCache are turned off, there is no problem ...

ketlen_0-1707031085989.png ketlen_1-1707031103584.png ketlen_2-1707031243860.png
ketlen by Associate
  • 162 Views
  • 1 replies
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STM32H723 USB Mass storage

I am trying to implement a USB mass storage using USB3300, STM32H723, and e eMMC. Project Setup:* Clock configUSB_HS ConfigUSB Device configeMMC configIn the code I made these addons in the "usbd_storage_if.c" file:Currently, my custom board is worki...

clock1.png clock2.png USB_OTG_HS.png USB_OTG_GPIO.png
GnasUhn by Associate II
  • 99 Views
  • 4 replies
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MDMA write error writing to DMA registers

Hello, I have a DMA stream working in Normal mode (Mem to Peripheral). This by itself is working properly (without MDMA). I want to configure MDMA to set the next parameters for the DMA to handle. I configure 4 words (4 uint_32) in memory for writing...

BBeha by Associate II
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  • 0 replies
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Resolved! FatFs unrealiable under high load on STM32H743

Hello,I am using a STM32H743 with a W25Q128 external flash memory running FreeRTOS and FatFs. USB is configured for mass storage, to copy files from a computer to the flash memory. The following function is used to list all the files and directories ...

JP_ama by Associate III
  • 1317 Views
  • 22 replies
  • 2 kudos

STM32H747I JPEG DecodeDMA

Hi all,I´m new to STM32 and just recently bought an STM32H747I-DISCO. I needed one with a touch screen for a project. I was going thru the examples and got the LCD DSI SingleBuffer to work but was having problems with the JPEGDecodeFromFLASH DMA. I u...

JL3 by Associate
  • 28 Views
  • 0 replies
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STM32H755 I2c BDMA BUSY ON SECOND CALL

I am having issues with BDMA on consecutive transfers, the DMA handle is always in the busy state on the second call. I call this from my application and first transfer works as expected, goes into ISR void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef...

kip18 by Associate II
  • 35 Views
  • 0 replies
  • 0 kudos