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Auto-polling mode with octal memories is not functional.

Hello everyone,I made a custom board for our design, a STM32L4R9VI and an ospi memory MX25UM51245G are integrated on this board. There is a MX25LM51245G on STM32L4R9I-disco board, but it is not in stock, so I chose this 1.8V version MX25UM51245G. The...

Hzhan.2 by • Associate II
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STM32H743 - SPI-DMA timing problem with slave select

Hi everyone,I have a problem with a bidirectional SPI communication. I am using the HAL_SPI_TransmitReceive_DMA function for all my communications and my project is loosely based on the STM SPI example. I have now noticed a problem with my communicat...

MGöll.1 by • Associate
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  • 2 replies
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Receive/Transmit UART data using DMA

Hello,I use with:- Nucleo-H743ZI2 -STM32CubeIDE ver 1.6.0-MCU Package ver 1.9.0I made loopback between PB14 & PB15 , the loopback work i checked it without DMA . I try to send data from buffer and get the data using DMA but it is not working.Thank's

IShar.2 by • Associate II
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  • 4 replies
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Would you tell me the condition(Hi/Low/Hiz/PullHigh/PullLow) of all ports of STM32G474 MCU chip when it gets boot mode with boo0 pin of high?

I'm building a new custom PCB with the MCU(STM32G4) chip and needs to get it updated with a new Firmware through UART by main computer. then I HAVE TO CARE all MCU pins so as NOT to make bad effects on other LSI during boot mode. I need to know all t...

TKoya.1 by • Associate
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  • 3 replies
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Resolved! Trying to find best and most reliable way when using the STM32 timers to change the timebase 'on the fly'.

Hi, I've recently retired from being an electronics design engineer for over 40 years. I wanted to have some fun playing around with micros to do some basic control. I have both the Nucleo-F030R8 and STM32F4 Discovery evaluation boards and have bee...

mistert by • Associate II
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  • 4 replies
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Why does my Opamp PGA seem to be 10, not 16?

Hi,I have a board, with STM32f303. It generally works fine, but I am using the opamps and they are causing me trouble. I have set them up to have PGA of 16, and be internally connected to the ADC, and have test points on my board where I can measure ...

0693W000003C1qsQAC.png 0693W000003C1qJQAS.png
DMolo by • Senior
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  • 16 replies
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Resolved! float correctly displayed in debug but not in release.

Dear experts,i try to use the float library with printf or vsnprintf. The option nano has been checked, the -u _printf_float too. The latest version of STM32cubeIDE, the proc is STM32F446RE. The value of floats are correctly displayed in debug but i...

papageno by • Associate III
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About alternate function of STM32F746

Hello,STM32F74xxx Reference manual (RM0385) 6.3.2 I / O pin alternate function multiplexer and mapping has the following description.After reset the multiplexer selection is alternate function 0 (AF0).I think that when AF0 is selected, it will be ass...

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