STM32 MCUs Products

When do we need to call Clean and Invalidate D Cache?

Hi everybody, this maybe a very simple question but it is complex to me.Are they only needed between DMA and Memory?If we have few buffers but they are same RAM, do we need to clean/invalidate before copy or read?If a buffer is located in uncache (by...

STM32H747I board how to program

Hello I just got a STM32H747I-DISCO board. I have no idea how to program it. I am using STM32Cube ide. When I use only CM4 main to led blink debugger gives error. When I write led blinking code to both CM4 main and CM7 main then this time debugger is...

I want to use the RS485 interface. How do I get the DE to toggle off? I have configured the USART to enable the DEM bit but the DE line stays high all the time. Do I have to toggle the DE line or is it ran by the uC?

Simple Single ADC conversion can hang up (ADC_CR_ADSTART keeps set)

... just reporting, no question...Today I had a quite bizarre problem with my ADC when testing the same PCB with RevY and RevV chip.I operate the ADC in regular single mode (I tried also regular discontinuous mode), very slow sampling (865 cycles)), ...

How to do RTC smooth digital calibration in STM32F0?

Hi,I want to calibrate RTC(which is powered through LSE-32.768KHz) in stm32F051 and want to know how CALM value is calculated in RTC calibration register(RTC->CALR).Thank you.

STM32G473M series availablilty. On the website it is specified that it will be available on the Q1/2020. Do you know a more precise date?

I am trying to generate 10 microseconds delay by using the timer2 and also explain me how to calculate exact delay bases on Rcc 24MH what is the confirmation actually this delay I will use to integrated the sensor I. Using stm32l152retx please help as soo

IC2 2 is interfering PB3.

Hello.I have a problem with STM32L051C8T6. I have uppdated an old project with a I2C bus connected to I2C 2 pins PB10 and PB11. The I2C bus works fine but it interferes with my port PB3. In file STM32L0XX_HAL_I2C.C the PB3 is Cleared (Reset) by this ...

STM32F779NI: RTC time-gain with 32768 Hz LSE crystal

Hi,I'm working on STM32F779NI MCU. For our PCB, we have used 32768 Hz LSE crystal for RTC, which has a tolerance of +/-20 ppm. However on long-run testing, a time gain of around 6 sec in 25 hrs was observed, which is higher than the stated tolerance....

STM32F7 and ethercat slave

I'm investigating if it is feasible to implement ethercat slave on an stm32f7/stm32h7.I found the I-NUCLEO-NETX. But can't buy it farnell/mouser/digikey. and hilscher is very secretive about any information. So are there successful implementation of...