About Leon_MS

Leon_MS · 2023-12-08

Hello all,I am learning to implement a bare-minimal code that let PTP(OC, slave mode) works with STM32H755(Nucleo-H755ZI-Q with FreeRTOS). I have read RM0399, UM2217 as well as stm32h7xx_hal_eth.c with corresponding chapters. And here is the first dr...

Leon_MS · 2023-11-29

Hi all. This is the first time I am using CubeH7 + FreeRTOS + LwIP. I have tried to trace down how Ethernet MAC interrupts have been enabled. If I got the code correctly:+ I enabled "Ethernet global interrupt" option from CubeMX "ETH".+ I enabled "Lw...

Leon_MS · 2023-11-06

Hi all, May I kindly ask some suggestions about the best practices, how to use e.g. printf for instrumenting logs that both of the dual M7 and M4 core could print at the same time?(Best case is through the same port...) Some background information:...

Leon_MS · 2023-11-05

Hello all, I am new for STM32 dual-core MCUs(Nucleo-H755ZI-Q is used). By following the guides(reference manuals, application notes...) I have been successfully sent characters to SWO with following call graph on Cortex-M7: ITM_SendChar() <- _write...

Leon_MS · 2023-12-28

I have also observed the RX timestamping, from RX DMA context descriptor actually contains the timestamp from the 2nd last packet received. Not from the one just received....

Leon_MS · 2023-12-28

Hello @FBL ! I am now using STM32CubeH7 v1.11.1 so, I guess it should include that rework.I have done some testing from my side, and based on the observations:+ Changing CPU / AHB1 frequencies are not helpful. I am now using CM7 @ 400MHz, CM4 @ 200 M...

Leon_MS · 2023-12-25

Maybe some other findings I would like to share as well @FBL :I have tried 2 different scenarios under PTP packet receiving. The first one is just running ptp4l and the second one is running "ping" command, while at the same time ptp4l is running.On ...

Leon_MS · 2023-12-25

Thanks a lot @FBL! And sorry for my late reply.For those days I have tried different kind of code to test how PTP feature works with STM32H755 Ethernet MAC. I have used a Ubuntu PC with ptp4l (command shown below), generating IEEE 1588 Ethernet frame...

Leon_MS · 2023-12-12

Would be really appreciate if someone could help! Actually the reason why I am implementing this code, is because I would believe the "programming guide" contains all details that makes PTP application works and, porting ptpd might unnecessary in thi...

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STM32H755 with Precision Time Protocol.

How Ethernet MAC interrupts have been enabled by STM32CubeH7?

Best practices for instrumentation logging with dual-core MCU

How to call ITM_SendChar with STM32H755 dual-core MCU, but on CM4 side.

Re: STM32H755 with Precision Time Protocol.

Re: STM32H755 with Precision Time Protocol.

Re: STM32H755 with Precision Time Protocol.

Re: STM32H755 with Precision Time Protocol.

Re: STM32H755 with Precision Time Protocol.