About awocrf

awocrf · 2025-02-27

Hi,STM32U5A5VJT6Q has 2 VDD11 pins. Should these be connected together using an external trace on a PCB? I did look at Nucleo U5A5ZJ-Q schematic but I'm still not sure.Thanks,Adam

awocrf · 2025-02-27

Hi,I want to buy LDL212PUR LDO. I have 2 questions:1. Can it work reliably with ceramic capacitors?2. What are the recommended resistor values for voltage adjust version?I cannot find this information in the datasheet.Thanks,Adam

awocrf · 2025-01-08

HiI'm trying to connect an SD card to my Nucleo U5A5ZJ-Q board using SDMMC peripheral and use it with FatFS library. When I use 1GB card and 4 bit mode, everything works fine. By "works fine" I mean that:1. it passes this FatFS test: http://elm-chan....

awocrf · 2024-03-07

Hi,I recently started exploring what STM32WL MCUs offer but I don't really understand a few things yet:1. I read somewhere that these STMs are based on SX126x LoRa radio. Is that the case?2. If so, does enabling "SUBGHZ_PHY" in middlewares in CubeIDE...

awocrf · 2025-01-24

>So be glad, 4 bit mode working fine.Yeah, right now I only need 4 bit mode to work. I'm curious as to why 1 bit mode doesn't work, but I don't know if it's worth it for me to find out due to how much time I'm spending on this. Maybe the connections ...

awocrf · 2025-01-23

I've re-run the test from that .xyz website I linked earlier with mount 0 and 1.In 4 bit mode both are working.In 1 bit mode I get FR_NO_FILESYSTEM in both cases.With Chan's test (link in original post) 4 bit mode passes without problems. 1 bit mode ...

awocrf · 2025-01-22

Oh, I think I forgot to mention that 16 and 32GB uSD cards now work too.I've compared CubeMX generated code for 1 bit and 4 bits and I didn't see any unwanted differences (files in attachment).

awocrf · 2025-01-21

All SDMMC pins medium and pullup, 4 bit mode. With 4cm SDMMC cables the uSD card is working at 40MHz. Thank you very much for the suggestion! Was noise causing it to not work with most of the cards?But there's still one problem. Why 1 bit mode return...

awocrf · 2025-01-20

Sorry for slow reply, I've been quite busy lately.My CPU -> uSD lines are 20cm + Nucleo track length + uSD adapter track length. I know that these are long, but:I've used multiple clock speeds, fast and slow, both as SD clock and for SDMMC peripheral...

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STM32U5A5VJT6Q VDD11 connection

LDL212PUR LDO ceramic caps and resistor values

STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem

STM32WL55/STM32WLE5 SubGHz

Re: STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem

Re: STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem

Re: STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem

Re: STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem

Re: STM32U5 Nucleo-U5A5ZJ-Q large SD card and 1 bit problem