STM32 MCUs Products

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Forum Posts

Allocate user defined section on FLASH with constant value

I'm using STM32F427.I want to declare the variable as a custom section and use it in a specific address area on the MCU FLASH.I change the *.ld file, declare that the variables are assigned to the designated section, so the compile becomes normal, an...

SSeo.17 by Associate III
  • 4336 Views
  • 3 replies
  • 1 kudos

Questions regarding using STM32 as a UART "relay"

Hi, our hardware engineer kinda messed up and I'm forced to use an onboard STM32C8T6 and lowball it as a UART "relay", basically UART1 reads whatever that's putting in with likely a buffer of 32 bytes, and immediately sends them out over UART3.The du...

SDRAM Malloc and printf / sinit crash

Hello,I'm using an STM32H743-EVAL2 board, I want to access the LCD screen to draw a PNG image, so I'm using a png library to load the image, and this library use "malloc".Unfortunately the RAM of the H743 is too small for handling large pictures, so ...

CedricB by Associate II
  • 974 Views
  • 2 replies
  • 0 kudos

How to enable character match on STM32L431

HelloI'm using an STM32L431 and trying to enable character match on usart2MXcube does not manage "MODBUS" modes and the st HAL layer doesn't seem to allow this setting (it allows modbus timout but not character match)So I try to modify USART_CR2 ADD...

po221 by Senior
  • 1486 Views
  • 7 replies
  • 0 kudos

STM32H7 HSE Amplitude

Hello I have a custom board with a STM32H753ZIT and I’m wondering about the amplitude of the HSE crystal. It is only 300mV (see the attached Image). It seems to wok but is this normal?The crystal requires a load capacity of 20pF per datasheet, the ca...

How to generate SFI file?

Hi,I am doing security project by STM32L562QE and have some questions.1. I am trying to generate SFI file, but I didn't find the document talking about how to generate these files(encryption key file, Nonce file, and option bytes file). Can you provi...

0693W000006HM1nQAG.png 0693W000006HM1sQAG.png
PHu.1 by Associate
  • 915 Views
  • 2 replies
  • 0 kudos

I2S Master has Full Duplex DMA L/R Swapped after Restart

Posted on January 02, 2018 at 22:53I have an application using an STM32F429ZI processor and I'm seeing a strange problem where the L/R audio output gets swapped after changing I2S frequencies.My procedure to change frequencies is as follows:HAL_I2S_...

Showing date and time of file creation in sd card

HelloI have interfaced sd card with controller STM32F779BIi have write text file in sd card but i could not see at what time file is written to sd card doesn't show in properties of that text fileis this is possible , if yes then how can i do that ?B...