About iTTy

iTTy · 2024-07-23

Hi there, I'm fixing the jump function from my custom bootloader to the application, below the code: static void __inline__ CheckAPPjumpRESET(void) { /*.-.-.| Local variables: |.-.-.*/ u32t uiI = 0; /*.-.-.| Execution: |.-.-.*/ if(GetRESETkey()...

iTTy · 2024-07-03

Hi there.As usual, I'm there with a new issue... Developing a custom Bootloader, I'm trying to disable both Instruction and Data chaches.As I read on the ST AN4839, before deactivating the DCache, I would also Clean it.No problem with the Icache, but...

iTTy · 2024-05-14

Hi there,I developed a custom bootloader for a STM32H755 MCU.I successfully tested my bootloader on a NUCLEO H755 board (with small projects), and all seems ok.Moving on my final board, with the actual Firmware to be downloaded I'm experiencing an u...

iTTy · 2024-04-11

Hi there!I already configured LwIP package and make it work on a NUCLEO-H755ZIQ following @Adam BERLINGER gude in the Knowledge base section.Even if the communication is working, some configurations are to me totally cryptic...In particular, I would ...

iTTy · 2024-04-11

Hi there!I already configured LwIP package and make it work on a NUCLEO-H755ZIQ following @Adam BERLINGER gude in the Knowledge base section:https://community.st.com/t5/stm32-mcus/how-to-create-project-for-stm32h7-with-ethernet-and-lwip-stack/ta-p/49...

iTTy · 2024-07-31

Hi @TDK ,thanks for your reply and sorry for my delay.Of coarse, the M4 core remains stopped during the Bootloader execution, and the jump toward the application is executed after a system reset.I tried to debug the application startup, but using the...

iTTy · 2024-07-22

Hi @STea ,thanks for your reply and for the interesting article you linked: I will study it better in next days!Actually I didn't test your proposal because I moved misleading instruction in another place for "architectural" reasons...I suppose, it w...

iTTy · 2024-05-21

Hi @Tesla DeLorean ,thanks for your suggestion!Defining sections I'm locating, actually fix my issue!Just for my comprehension:1) Why other sections such like .sbb or .data whitch are not "NOLOAD" dosn't give the same issue? What different with my cu...

iTTy · 2024-04-11

Hi @Ditzhak !I'm not an ADC expert but for my experience your problem could be given:1) by the ADC peripheral configuration2) by the routing of the analog channels on the board3) both of previous ones.I a similar application based on STM32H755 MCU i ...

iTTy · 2024-04-11

Intresting!Just a clarification: in my application project I don't settled up any DMA usage for the ethernet commnunication.Could be that LwIP package is using DMA in a "hidden" way?

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stm32H7, HAL_Deinit() causes core stall

Hard Fault calling SCB_DisableDCache() or SCB_CleanDCache()

IDE generated elf file, unexpected behavior

ETH and LwIP memories configurations

LwIP heap memory in DTCMRAM

Re: stm32H7, HAL_Deinit() causes core stall

Re: Hard Fault calling SCB_DisableDCache() or SCB_CleanDCache()

Re: IDE generated elf file, unexpected behavior

Re: ADC - 4 channels crostalk

Re: LwIP heap memory in DTCMRAM