STM32 MCUs Products

Is there a limit on how many bytes to send over I2C from the slave? The MCU is STM32F469NI, and I have programed the board to act as an slave, it works fine if amount of data sent from slave is less than 100 bytes, but data gets corrupted if sent more.

Is there a limit on how many bytes to send over I2C from the slave?The MCU in question is STM32F469NI, and I have programed the board to act as an slave using HAL, it works fine if amount of data sent from slave is less than 100, but gets corrupted f...

STM32F746 QSPI interrupt firing continuously with no apparent interrupt source

Hi,I'm trying to use the QSPI peripheral on the STM32F746, specifically on the STM32F746 Discovery board, however, as soon as any QSPI interrupt is enabled there is an interrupt present but upon reading the status registers there is no visible interr...

Programing STM32F030 faild: No device at targed

Hi, I designed my first own board with a STM32F030F4P6 on it. Additionally a got me a ST-Link V2 for programing and debugging. As IDEIuse CubeMXIDE. I already successfully programed some Nucleos with it. With my own board I don't get a connection to ...

STM32H7 lowest possible standby current, any examples?

HI!I am currently trying to minimise the standby consumption of a STM32H7 down to theabsolute minimum. Only the change of one Pin (PA0) is selected as wakeup event. No need for backup ram, Pin drivers, RTC nor anything else. The MCU shall only switch...

Resolved! How to read STM32H7 SRAM ECC status?

I want to periodically check the state of the RAM ECC detection in my firmware on a STM32H753.The ECC mechanism is well described in the Reference Manual for the Flash but not very well (in my opinion) for the RAM.I've seen that there are dedicated i...

Disable exception for Flash ECC double detection

If I understand correctly, on STM32H7, a double error in Flash triggers a BusFault. is it possible to disable the generation of this exception ?

STM32L010K4: can't change USART2SEL-bits in RCC->CCIPR

Hi,after encountering the problem with my non-CMSIS-based project, I tried to just set up a simple project in CubeMX, just activating the USART2 and selecting HSI16 as clk-source for the USART.Starting the debugger shows, as already seen in my origin...

Resolved! The Purpose of external crystal

Hello everyone, I have a question related to MCU oscillator. Honestly, i usually design MCU with external crystal , by belief that it is surely always better internal oscillator. Even i believed that if MCU isn't run with external crystal will make s...

GPIO current sink capability when configured as pull-up and pin voltage > Vdd + 0.3 V

Hello,I'm using the STM32L4A6RG and I'm interested in the exact behavior / rating of a GPIO-pin when configured as pull-up. The datasheet says, that if configured as pull-up, the maximum voltage allowed on that pin is Vdd + 0.3 V. That means there is...

Setup LI-cache on STM32H753

I'm playing with the L1-cache of STM32H753. What I am trying to do is to provoke -on purpose- an inconsistency between the cache and the RAM as follows: set up the SRAM region as write-through cacheableenable the data cachewrite something to a variab...

STM32 MCUs Products

Forum Posts

Is there a limit on how many bytes to send over I2C from the slave? The MCU is STM32F469NI, and I have programed the board to act as an slave, it works fine if amount of data sent from slave is less than 100 bytes, but data gets corrupted if sent more.

STM32F746 QSPI interrupt firing continuously with no apparent interrupt source

Programing STM32F030 faild: No device at targed

STM32H7 lowest possible standby current, any examples?

Resolved! How to read STM32H7 SRAM ECC status?

Disable exception for Flash ECC double detection

STM32L010K4: can't change USART2SEL-bits in RCC->CCIPR

Resolved! The Purpose of external crystal

GPIO current sink capability when configured as pull-up and pin voltage > Vdd + 0.3 V

Setup LI-cache on STM32H753

STM32L486: SPI-Clock doubled

EXTICR1 and EXTICR4 Documentation Issue for STM32H...

code gets stuck on SystemClock_Config() or HAL_Del...

STM32F722 ADC

DMA / UCPD sending the wrong data

LPTIM_ISR_ARROK in LPTIM1_ISR never gets set on ST...