About elso

elso · 2024-06-01

Hi all,I was reading through the documentation of the STM32H723 to find out what clock speed I can configure the FMC to run at using an external SDRAM. Looking at older posts and videos there is mentioned 100 MHz, but when I look at the newer/revised...

elso · 2024-05-06

Hi all,I am designing a PCB around the STM32H723 and wants to implement 4 bit SD card communication. As shown in the picture it can be done using 3.3V, with lower speeds, and avoiding these fine-pitch level translators. However does anybody have expe...

elso · 2024-01-02

Hi all!I am making a PCB with STM32H723, and have chosen this MCU due to its greats specs and versatility. However I would like to add at least 4Mbit (0.5MB) of RAM, either as SDRAM, SRAM or PSRAM etc. using the FMC (Flexible memory controller). Howe...

elso · 2023-12-15

Hi All,I want to use two ADCs on STM32H7 configured equal, but using one DMA each, and measuring on different channels. However it seems like the ADC3 have options ADC1 and 2 doesn't have. In this case DMA continuous request.Is this intentional? A wo...

elso · 2023-12-13

Hi All,I am trying to implement a code on STM32H723 Nucleo-144 where the ADC uses DMA configured in double buffer mode. I cant find any examples on how to do it. I have tried to analyze the ADC to DMA in circular mode code, but I struggle to convert ...

elso · 2024-06-02

Hi, I found the solution on page 143 in the datasheet.https://www.st.com/resource/en/datasheet/stm32h723zg.pdf (Only 550MHz MCUs)

elso · 2023-12-13

It worked! It was alot faster! Had to just figure out why my interrupts acted strange, and the software version got fast enough.Blue is Time to copy.Orange toggles between half full and full interrupts.

elso · 2023-12-13

The case is that I want to sample with 5 Msps and 8 bit resolution. When a trigger is called, I need 40 ms of data = 200 000 B, and store it on a SD card. The trigger should stop all ADC and DMA actions.Before the trigger is called I will need to con...

elso · 2023-12-13

The reason I need it is due to the 16-bits counter limit :)I want it to work as a ping-pong buffer for MDMA. Tried doing a SW trigger of the DMA Ping pong buffer, but was too slow.

elso · 2023-11-15

Hi @FBL Is it possible to trigger MDMA on the DMA buffer half complete interrupt too?

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STM32H723 SDRAM clock

4-bit SD card communication STM32H723

Help choosing the best external RAM for STM32H723

ADC1/ADC2 configuration options differs from ADC3 on STM32H723

How to do ADC -> DMA in double buffer mode configuration

Re: STM32H723 SDRAM clock

Re: How to do ADC -> DMA in double buffer mode configuration

Re: How to do ADC -> DMA in double buffer mode configuration

Re: How to do ADC -> DMA in double buffer mode configuration

Re: MDMA and DMA shared memory speed optimization