About LCE

LCE · 2024-05-14

Heyho,I recently finished - or so I thought - the ethernet bootloader for STM32H73x.The bootloader can update the application and vice versa, updating, jumping back and forth, all working fine.Until yesterday all of a sudden (when I was working on so...

LCE · 2024-05-01

Heyho FLASH experts!within the last few weeks I was able to get an ethernet bootloader running on a H735 discovery kit.Internal flash is partitioned into area starting with the bootloader (256kB, including ETH), then comes the application (rest: 768k...

LCE · 2024-04-18

Heyho,I just made an interesting observation on the STM32H735 Discovery concerning the internal core power supply.I'm working on an ethernet bootloader for my custom board using an STM32H733, which has no internal SMPS, only the LDO.As I do not yet h...

LCE · 2024-04-17

Heyho,I'm currently working on an ethernet bootloader, I have it all working now.File upload via browser using http POST, into HyperRAM (~200 ms for 400kB bin file),from HyperRAM to external SPI flash (for now octal on H735-Discovery, later changed t...

LCE · 2024-03-15

Heyho,I'm about to start writing an ethernet bootloader for the H7.I found the F7's LwIP_IAP example, a good way to get ideas how to realize the bootloader, although I'll probably put the new bin into an external SPI flash.As I have an http-webserver...

LCE · 2024-06-18

Finally found the problem on my board, maybe it's at least related to yours @DavidWahlberg I wanted to set it up without I2C or SPI, which means no access to all registers, especially register 198d, which needs bit 3 to be set (default = 0) to use it...

LCE · 2024-06-14

I use the H733 / H735 with Infineon HyperRam S70KL1281 / S70KL1282 via OCTOSPI in memory-mapped mode.Works perfectly here at 100 MHz with data rates > 50 MByte/s.The H723 should be able to do the same.

LCE · 2024-06-13

... and that was seemingly not the solution. :(

LCE · 2024-06-13

I did such a *** mistake - once more copy & paste, this time from my LAN8742 "driver":When restarting auto-negotiation, I actually completely reset BCR register and thus turned OFF recommended "HP Auto MDI/MDI-X mode".Ouch...Now all is running smooth...

LCE · 2024-06-13

> quadspi_hclk (hclk3)> It is the source clock for the register interface. This clock has no impact on the QUADSPI CLK.They should have added:"Unless it is selected as source for QUADSPI CLK in the QSPI clock mux"

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User Activity

Data-like flash read with memory barrier?

H735 flash writing vs. interrupts and ... what?

STM32H735-DK: SMPS vs LDO interesting observation

STM32H7: no execution from flash while erasing or programming

LwIP_IAP: html files?

Re: Custom PCB, STM32H7 and KSZ8863RLL, RMII

Re: Expanding SRAM on STM32H723VGH6

Re: Custom PCB, STM32H7 and KSZ8863RLL, RMII

Re: Custom PCB, STM32H7 and KSZ8863RLL, RMII

Re: STM32H7 QUADSPI clock configuration