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Forum Posts

ADC DMA not work

HelloWe ran the ADC DMA on the HAL example source. However, I tried to write the source in CUBEMX, When executed, the DMA interrupt is executed once and is not executed again.Please let me know if I missed anything

HG LEE by Associate II
  • 1232 Views
  • 1 replies
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STM32H743 Internal voltage Reference and the ADC.

I am using the STM32H743II package (with Vref+ and Vref-). Those two pins are not connected in this design (they're left floating). I'd like to measure the temperature of the chip, and am having trouble using the internal voltage reference as the ref...

jgroff by Associate
  • 2353 Views
  • 2 replies
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STM32L Discovery, How to output HSI with MCO

Hello.I am currently developing with STM32L Discovery.In preparation for development, I tried to output using the MCO in order to know the exact frequency of the HSI of the evaluation board used.By operating MCOSEL in the RCC-> CFGR register, MSI and...

ota-s by Associate II
  • 6397 Views
  • 10 replies
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DMA memory to peripheral question.

Hello,I have a doubt regarding DMA memory to peripheral ?Suppose I would like to transfer a memory buffer content to SPIx TX.When do each transfer occurs ? Every time I change the content of the memory buffer ? Always ?I cannot find this information...

simo zz by Senior II
  • 1367 Views
  • 2 replies
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Unnecessary SD card command in block read/writes

Hi,When looking into stm32l4xx_hal_sd.c, I observed the following code:   if(hsd->SdCard.CardType != CARD_SDHC_SDXC)   {     add *= 512U;   }   /* Set Block Size for Card */   errorstate = SDMMC_CmdBlockLength(hsd->Instance, BLOCKSIZE);   if(errorsta...

Lama by Associate III
  • 3665 Views
  • 7 replies
  • 1 kudos
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