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Hi. I have been using STM32F1xx for many years. I have a new design that uses two uarts and the ADC peripheral - all using DMA. My question is: is it possible to overload the bus arbiter when there are too many dma transactions going on at the same time?

When both UARTS are transmitting & receiving, my ADC conversions (via DMA) sometimes do not complete. If I double clock speed (which I do not want to do in the product), the problem goes away. I cannot see any issues in my code that would cause this....

STM32L476 with WLCSP72 package has outpin problem.

Hi everbody,I am using STM32L476 mcu with WLCSP72 package on my designed board. On this mcu PC5, PC4, PB14, PC13 and PB13 pins are configured as an output-pushpull. The problem is, when the PB13 pin is set from Low to High, each time short-term pulse...

Resolved! STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Hello,So we are building a ball shooting robot which self detects the speed the ball was launched. The average speed is in range of 80mph. To get speed we are using two light gates, one on PF9 and one on PF10. So I set up EXTI interrupts on these two...

kuchx by • Associate II
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STM32H743 UART configurations for non-standard baud rate

Hi,I'm using STM32CubeMx to generate UART initialisation code for STM32H743 controller. I'm able to test UART communication for baud rate 3686400. I'm not able to make UART communication up & running when I changed baud rate to 4000000.Is there other...

S.Kamath by • Associate III
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Resolved! Interrupt priority in STM32F1

Hello,My question is that how many interrupts could be in pending state in STM32F1 MCUs? What would happen when a interrupt is running and in the same time another interrupt with same preempt priority be fired, does the running interrupt finishes and...

RezaMRBM by • Associate II
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Reading of ADC jumps randomly by about -20 counts

I am currently using an STM32L475VCT in my board design, and I also have an STM32L476G-EVAL board.I have ADC1 set up for sampling 6 channels continuously. Each conversion is triggered by an output from timer 1, I am also using 4x oversampling. The ti...

AWies.1 by • Associate III
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  • 7 replies
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I2C bridge

Dear all,In my system, STM32L412 is between MCU_B and Dev_S. The role of the STM32L412 is a bit like I2C bridge.That means MCU_B does any I2C read/write command from/to Dev_S must by the help of STM32L412.It is simple for STM32L412 receives I2C write...

0693W00000FDi0zQAD.png
E-John by • Associate III
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