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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
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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
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  • 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
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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
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  • 7 replies
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Resolved! STM32F091 I2C1 not working but I2C2 works perfectly.

I have a design where I am using both I2C1 (external ADC) and I2C2 (external EEPROM). I have no problem making I2C2 work perfectly. The MCU both transmits and receives messages with no problem and I can see in on the Oscilloscope. However, when I att...

Problems with configuring the FDCAN of the STM32H743ZI

We have the following situation: We want to use the FDCAN of the STM32H743ZI with 500 kbit/s. We've got followingconfiguration parameters for the FDCAN1:hfdcan1.Instance = FDCAN1;    hfdcan1.Init.FrameFormat = FDCAN_FRAME_CLASSIC;    hfdcan1.Init.Mod...

TPien by Associate
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  • 1 replies
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