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I am designing with an STM32H745. I need to use the FMC bus to access my own ASIC. What is the full cycle time on the FMC access if I do back to back single read or single write with multiplexed address/data.

The access time of the FMC is not the whole equation, I need to include the delays introduced by having to go across domains and buses. Back to back reads or writes would shine more light on this for me. Or possibly a read followed by write so that ...

Sbeny.1 by Associate
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The issue on FMC EXTMODE ModeA write access

Hi community,I'm developing on STM32F7, it accesses the external device via FMC.Then it can read the external device's register, but it cannot write to the register.The external device expects EXTMODE ModeA timing like the following figure. Reference...

0690X00000AsUplQAF.png
HMats.7 by Associate II
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SPI makes stupid things

I'm new with the STM32F767ZI (Nucleo board) and tried to write a SPI driver with DMA access.It works so far, but I have some stupid things on my log, I can't interprete. Is anybody there, who knows what there is going wrong?I'd like to send three byt...

0693W000001rSE1QAM.png
mof182 by Associate II
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HAL_SPI_TRANSMIT sending bits unreliably

Hello,I'm a new new member and user of STM32 microcontrollers. I've just started using a bluepill STM32F103C8T6 microcontroller and I'm trying to set up a simple SPI communication.At the moment I do not have slaves, only a master (the STM32), and I'm...

ABoyd.1 by Associate II
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Timer synchronization maximum frequency

Hi,If I am starting with 120 MHz system clock and want the master timer to generate a 60 MHz PWM waveform and I want the second timer to generate an in-phase 8 MHz PWM waveform I must clock the second timer with 120 MHz (as 60 MHz isn't divisible by ...

NArnd by Associate III
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  • 4 replies
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NUCLEO G431RB BOOT0 Pin and FDCAN Problem

Hi, I've 2 Nucleo boards (Edit: Nucleo -G431RB )to communicate between FDCAN. I create a project using CUBEMX. Default FDCAN RX/TX is PA11/PA12. and I have no problem getting it work. All worked fine. But I also need USB so I moved FDCAN Pins to PB9/...

e-zeki by Associate III
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  • 2 replies
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