[BUG] FlashAir card doesn't work with STM32 (BTT_SKR_MINI_E3_V1_2)

[dp250f]

Bug Description

SDHC cards don't initialize with STM32 (my other board - LPC1768 - reads SDHC cards fine)

My Configurations

Configs.zip

Steps to Reproduce

Compile firmware with SDSUPPORT enabled for an STM32 board
Observe SDSC cards work but SDHC cards don't.

Expected behavior: [What you expect to happen]
Insert SDSC card (<=8GB) and initialize it - it should work
Insert SDHC card (>8GB) and initialize it - it should work

Actual behavior:
Insert SDSC card (<=8GB) and initialize it - it works
Insert SDHC card (>8GB) and attempt to initialize it - it doesn't work

Additional Information

I'm using BOARD_BTT_SKR_MINI_E3_V1_2 and the following SD cards to test:
128MB SDSC (works)
4GB Class 4 SDSC (works)
16GB Class 10 SDHC (doesn't work)

[Lord-Quake]

I have the board in my Ender-3 and cannot replicate your issue.
I'm using SanDisk Ultra with 32GB. I've tried all possible variations. Initialization has worked every time.
I can't find anything relevant in your configs why it shouldn't work, at least with my little know-how on the subject.

Maybe changing to this in configuration_adv might help:
#if ENABLED(SDSUPPORT)
#define BLOCK_BUFFER_SIZE 32 // SD,LCD,Buttons take more memory, block buffer needs to be smaller
#else
#define BLOCK_BUFFER_SIZE 32 // maximize block buffer
#endif

[RudyBenner]

Try <4gig card formatted FAT16. Or larger card partitioned to <4gig

[Lord-Quake]

I'm using FAT32 with mine.

[thisiskeithb]

I just tried with PNY & SanDisk 16GB SDHC cards formatted as FAT32 on an SKR Mini E3 1.2 and they work fine, so it's probably not SDHC specific.

From what I've seen on Facebook, switching to a different card/manufacturer usually solves the problem.

[dp250f]

Interesting. The only SDHC card I had tried is a 16GB Toshiba FlashAir W-04. It works fine in my SKR 1.3 and my older PrintrBoard RevD (using Marlin 1.1.9)
This card says it's a 16GB, SDHC, UHS-1, Speed Class 10, UHS Speed Class 3.

I found a few other random SD cards which work:
PNY 4GB SDHC, Speed Class 4 (those are the only specs I can see on it)
Unbranded 4GB SDHC, Speed Class 4 (those are the only specs I can see on it)
Patriot 64GB SDXC, UHS-1, Speed Class 10, UHS Speed Class 1 (formatted 4GB FAT32)
Patriot 64GB SDXC, UHS-1, Speed Class 10, UHS Speed Class 1 (formatted 32GB FAT32)

I also tried formatting the FlashAir card with a 4GB FAT32 partition and even a 1GB FAT partition, neither would initialize. Seems to only be a problem with FlashAir on STM32

[thisiskeithb]

Seems to only be a problem with FlashAir on STM32

If someone else using a FlashAir could run some tests, that would be helpful. I don't own one, or I'd check.

[boelle]

looks like this is more a hardware issue then?

[dp250f]

I don't really know enough to say it's a hardware problem or not.
I can say this FlashAir card works with Marlin 2.0.1 on LPC1768 and Marlin 1.1.9 on AT90USB1286, but does not work with Marlin 2.0.1 on STM32F1.

Not sure if this is helpful, but it also reads fine in the BTT-TFT35-E3-V3.0 when it's in Host mode. That controller uses an STM32F207 VCT6. Given - it's not running Marlin, but shows that card can work with at least that variety of STM32.

[boelle]

have you tried with bugfix 2.0.x ? its newer than 2.0.1

[dp250f]

Sorry about that - it is bugfix 2.0.x, last one I tried was downloaded 1/19/2020

have you tried with bugfix 2.0.x ? its newer than 2.0.1

[boelle]

but a normal sd card works fine? i would then expect it to be a hardware issue of some sort

from what i know a flashair is just and sd card with a wifi module build in so that you can transfer files to it over wifi, but seen from the controller side its just an sd card

[dp250f]

but a normal sd card works fine? i would then expect it to be a hardware issue of some sort

from what i know a flashair is just and sd card with a wifi module build in so that you can transfer files to it over wifi, but seen from the controller side its just an sd card

I would agree, but that exact card works fine with other devices and with Marlin 2.0.x and 1.1.9 with different processors. It is clearly working normally. I would be happy to donate a FlashAir card to a Marlin developer to get it working with STM32F1 and Marlin 2.0.x if that would help.

[boelle]

@thinkyhead @shitcreek @Vertabreak @InsanityAutomation are the only ones i know, are you US based?