STM32 MCUs Products

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Forum Posts

ST Nucleo board with BLE 5.2 and NFC?

Hello,I have developed a device using an STM32F4 but am now trying to either add BLE or merge to an SoC with BLE and don't know the easiest path forward. I need OOB pairing using NFC but am very limited in PCB space.Does ST provide an all in one SoC...

kcire L. by Associate III
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Resolved! L4R7 prefetch enabling and disabling

Hello,Does anybody know if there is any prerequisite when enabling or disabling the prefetch buffer?More specifically, in the Nucleo L4R5ZI sleep example the prefetch buffer is disabled in main() just before the main loop. It is never re-enabled afte...

NArnd by Associate III
  • 1951 Views
  • 3 replies
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STM32H743 Battery backed ram issue - ideas wanted

I'm using the 4K of battery backed RAM on the STM32H743 to preserve variables between power cycles. This works fine on 90% of identical systems running identical firmware and with identical H/W, identical chip versions etc. i.e. data is exactly what ...

PMath.4 by Senior III
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  • 5 replies
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STM32H7 SDMMC2 DMA Configuration

I can configure MDMA for SDMMC1 in STM32H730 in STM32CubeIDE.But I do not understand how to enable it for SDMMC2. In the documentation it says SDMMC2 has a direct access to DMA1 & DMA2. But I could not see it in DMA configuration panel.Could you help...

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Resolved! Can't find the X3 crystal recommended by ST from any supplier, nor can I find an equivalent that is in stock from any supplier.

Hi,I have a STMF32446ZE board and require an external crystal that isn't using the STLINK crystal. For x3 ST recommend the following: NX3225GD-8.000MEXS00A-CG04874The specs of this crystal are: Frequency Stability ±50ppm Frequency Tolerance ±20ppm ...

CLH by Associate II
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  • 1 replies
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printf on STM32H747 core M4 doesn't work

printf works on the STM32H747 M7 core once I add the following codeint _write(int file, char *ptr, int len) { int i =0; for ( i = 0 ; i < len; i++) { ITM_SendChar((*ptr++)); } return len; }and enable the "SWV" in the debug...

CHossack by Associate III
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  • 3 replies
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Does HAL_UART_Transmit() sends ASCII or binary?

Hi! Does anyone know if HAL_UART_Transmit() sends ASCII or binary? I've tried to send some data a serial plotter but nothing is being plotted. The format of the data sent follows the setting in STM32CubeMx. (It works on Arduino serial plotter)Serial ...

M7890.1 by Associate III
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  • 10 replies
  • 1 kudos