STM32 MCUs Products

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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
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  • 2 replies
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"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
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  • 4 replies
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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
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  • 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
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  • 6 replies
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Resolved! Time delay when operating with DAC in STM32L4

Hi everyone!I use 8 MHz external oscillator for my MCU. For TIM1 there is no prescaler in CUBE, so I expect this timer to tick with pure 8MHz frequency. And therefore I expect to see 0.125 us * 2 * 2 = 0.5 us period of signal. But actually I have 24 ...

_legacyfs_online_stmicro_images_0693W00000bjWJcQAM.png _legacyfs_online_stmicro_images_0693W00000bjWKGQA2.png _legacyfs_online_stmicro_images_0693W00000bjWJhQAM.png
GMate.2 by Associate
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  • 3 replies
  • 0 kudos