STM32 MCUs Products

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Forum Posts

Question on SAI DMA buffer

Hi Team,I am using a the SAI Peripheral from the STM32L5 family to read data from a master device. I am employing the DMA peripheral to read the data from SAI. I have a buffer of 32kb and I am using the STM board as a slave device. I am using the HAL...

Jansunil by Associate II
  • 3740 Views
  • 6 replies
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Current consumption in sleep mode for STM32f401re

Hello Everyone ,I have a wrote a code to send STM32F401re to sleep with all peripherals on at 84Mhz , as per the datasheet i should be seeing a current consumption of 18-20mA, however I am seeing a consumption of 27mA. The code sends data through UA...

NNada.1 by Associate II
  • 759 Views
  • 1 replies
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STM32 UART receives Null character(\0) on reset.

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up ...

KK.4 by Associate II
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  • 3 replies
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Resolved! STM32F429 i2c master transmit always returns busy

Hi,I'm using STM32F429 to talk to TI BQ40Z50 via I2C, and I ran into an issue I have no clue.First of all, the code simply reads registers, and it works on TI BQ20Z95. The same code doesn't work on BQ40Z50. The HAL library always returns HAL_BUSY, an...

YKuo.1 by Associate II
  • 2586 Views
  • 2 replies
  • 0 kudos

"Pain" with D-cache cleaning&invalidating on STM32F7 family

I've read often about strange problems with activated D cache on M7 core and how it can be solved here in forum.But the STM32F7xx family has implemented a fast DTCM RAM that is accessible from CPU core and DMA peripherals.This DTCM memory should have...

SStor by Senior
  • 2650 Views
  • 4 replies
  • 0 kudos

Resolved! What is the accuracy of the ADC watchdog [STM32F303]?

I have successfully configured the adc watchdog. But i am a bit dissapointed of the accuracy. I set the bounds to 1000 and 3000, but when i read the values of the adc from the watchdog interrupt, i get also values from within the window (up to 1025/2...

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Tobe by Senior III
  • 3389 Views
  • 11 replies
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Resolved! my RTC don't run after power off and RTC_BKP_DR0 was cleared

I have Nucleo G0B1RE.I had add 3V battery to VBAT.I had change to use LSE for RTC.I had add RTC_BKP_DR to keep time before reset so RTC time reg was not cleared after reset but It was re-initial while booting.But RTC don't count while power off and R...

Tinnagit by Senior II
  • 2159 Views
  • 6 replies
  • 0 kudos