STM32 MCUs Products

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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...

Dat Tran by Senior II
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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...

GunkutA by Senior
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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 ...

BLilj.1 by Associate
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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....

SRB by Associate II
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  • 4 replies
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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...

Evan .1 by Associate II
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