STM32F4 Discovery board - Keil 5 IDE with CubeMX: Tutorial 22 SD Card SDIO 4 Bits + DMA

[@MrCkkwok456]

Thank you very much. Without your replacing functions, the DMA does not work. After replacing those 4 functions, it works now.

[@etiennerolland2072]

It's working well !! Thanks a lot, and I can confirm that with version 4.21 it's working better than with some more recent version.

[@mutexembedded2206]

Great!

[@47lokeshkumar74]

DO have whole code .share on [e-mail]

[@richesposito1344]

Thanks for your effort in putting these tutorials together. They are well made, extremely helpful and best of they work!

[@АлексейКабенюк]

Thanks, it helped me figure out with the timeout error (FR_DISK_ERR flag returned for all operation read, write, etc. ). When I use it library with RTOS. The default cubemx settings aren't using the DMA, but in this combination it needs for work.

[@kakmal5]

Peace be upon you, thanks for the tutorial. I'm new to STM32, and your tutorial help me alot.

[@mutexembedded2206]

:)

[@asdofjh]

What is the point of setting up a DMA channel for using FATFS in this way? If you look into the f_write call you will see that as soon as it sends the SDIO DMA it will sit there waiting for as long as it takes the DMA transfer to complete in a blocking way before proceeding. This makes the use of a DMA function completely irrelevant. I would love for someone to correct me as I have spent hours trying to find a solution to non-blocking fatfs write but it takes about 2 minutes to look into the f_write function to see that simply adding a DMA channel to the SDIO write adds zero benefit.

[@nikolaiesau2437]

Thanks a lot for this great tutorial!

[@wcl21058]

They are well made, extremely helpful and best of they work!

[@mohsenmazandarani7506]

Thank you......you always solve my problems......HAFAZAKALLAH HABIBI....;)

[@spiralsheepdoll]

Sadly there is a broken link above to the SDIO+DMA+FatFS+CubeMX.pdf file. This does not seem to be in the wayback machine (archive.org) Google search only finds other broken links to the file. Seems STM in their infinite wisdom decided to change the structure of their website.

[@manishkaul6291]

@MYaqoobEmbedded, please help me with the third link (for tutorial pdf). It says "The page you were looking for was moved or doesn't exist."

[@dmitr8194]

Great! But link on pdf doesn't work. Wanna look on tutorial from ST first

[@Ocelot-qx2fy]

Hi. Great job with your tutorial Series. I would like to ask you a question. At the beginning of the video, you mentioned that several people are experiencing problem with Hal spi library. Could you please tell me what kind of problem you are talking about ? I am working these days on a project with a Nucleo f411re and an ADXL345 accelerometer connected through SPI. I followed your tutorials on howto read and write on SPI. I think to have properly set the SPI configuration according to the accelerometer datasheet. Do you think possible a problem in the new library version? Please let me know. Thanks

[@mutexembedded2206]

Ocelot 0991 Hi man, Thanks, The issue is with the SDIO driver on latest CubeMX releases (4.23 and 4.24).

[@Ocelot-qx2fy]

MYaqoobEmbedded I am not sure about the exact version, but I essentially installed it on Sunday. So do you suggest to downgrade to the previous version ?

[@Ocelot-qx2fy]

I am not sure about it, but I don't think the SDIO driver is called when using Hal SPI transmit or receive. Please correct me if I am wrong.

[@mutexembedded2206]

Ocelot 0991 No, you are absolutely right. I was just referring to the Bug in the latest release that I mentioned at the start of this video. You should be ok with SPI. Good luck :)

[@paulg.3067]

Just a side note. On my F407VET (Black Board) I had to set CLKDIV to AT LEAST 11 to get SDIO mount at all... I would even set it higher for reliable operation...

[@mutexembedded2206]

Right, that's most probably to do with line impedance and strength of pull up. Is it a copy board or ST designed?

[@paulg.3067]

@@mutexembedded2206 Its not a ST board nor ST designed, its a 15€ Chinese one: www.mikrocontroller.net/attachment/464382/black.jpg It has 10k pullups on SDIO lines. I also somehow doubt that they've done any impedance matching on the SDIO traces but I also read that impedance matching is only needed if traces are longer than 120mm...

[@acatisfinetoo3018]

I have been trying to figure out how to use an SD card with DMA enabled to send video directly to a small LCD display...say i want to interface a ILI9341using DMA for fast transfer...how would i go about doing this with using this sketch as a framework?

[@paulg.3067]

How would one implement an action if DMA transfer is complete, for example toggle an LED? What happens if I do two consecutive DMA f_writes()? Will the latter wait for the first or will they collide and output garbage?

[@mutexembedded2206]

Hi, Wait until UART is ready again, before sending the next one, it is often few mili seconds.

[@outofthebots3122]

I am having trouble with my SDIO with my STM32F407VE. I have downgraded to the older cubemx same as your video. It returns FR_OK for f_mount, it returns FR_OK for f_open, it returns FR_OK for f_write but it doesn't return this for f_close and npthing is written to the SD card

[@jansunman7393]

Hi MYaqoobEmbedded, The example is illustrative. However the provided BSP_SD_XXXXXBlocks_DMA functions implement a busy waiting loop, which defeats the whole purpose of DMA.....

[@mutexembedded2206]

Useful with RTOS applications.

[@jansunman7393]

Yes, but than you would still need to build a mechanisme to properly synchronize the file system operations with the low level device access that yields the CPU, this is probably out of scope of the example, but may be the reason why the out of the box CubeMx implementation does not work.

[@ABABA30175]

Thank you for your tutorials, my CUBEMX version is 5.4.0, when I press generate code from the cubemx, their have some information about like "These IPS still have some not configured or wrong parameter values:[FATFS, Verify the Platform Settings Tab]". Will this influence the program working? Thank you.

[@mutexembedded2206]

If it is the disk detect pin, no effect

[@ABABA30175]

@@mutexembedded2206 Thank's a lot for your reply. Got it!

[@stevep4186]

Hi, I have problems with 3rd link under the video (SDIO DMA ST tutorial). STM has apparently moved their community platform web pages recently and the link does not resolve. Can anyone (including the author of this video) direct to an alternative site / document with the tutorial info?

[@mutexembedded2206]

Hi, Sorry for late reply. Right, I will try to find an alternative link.

[@naasikhendricks1501]

Asalaam Alaykum, I have a question when ticking the NVIC global does this need the mcu to interrupt when the dma is used?

[@schoolmatedairy]

I am currently using stm32cubeIDE with cubeMX firmware version v1.25.0. And your code doesn't work anymore, although it does work on the version v1.16.0 with keil5. Could you help me with this? I'm stuck for few days already.

[@rahulbhadane1383]

Hi, I am trying DMA mode for STM32F103VC...Code is also generated but the code given by you when added in the generated code, it gives error..and not working, How to solve it?

[@yerihiturriago9271]

Hey Bro! Nice tuto! But I have a query. In what moment do You use HAL_SD_Read() function? You keep using fatfs functions, so I confuse.

[@mutexembedded2206]

FatFS uses such functions in lower layers.

[@yerihiturriago9271]

@@mutexembedded2206 Sorry but, I can´t see that. I just can see "disk_write()" function whitin f_write() (exactly, line -> 2811, file -> ff.c). Please, can you show me where you see FatFs uses such functions?

[@yerihiturriago9271]

Thank you for your quick answer!

[@mutexembedded2206]

@@yerihiturriago9271 Not quite sure.. all i meant is there exist some LL layers of write/read to the sd card.

[@yerihiturriago9271]

@@mutexembedded2206 Hey! Sorry but I still can't see it. Is it because the my uvision's version? I have 5.26, but I really don't think that is it. Can you find it and send me an ScreenPrint?

[@lesterbizari743]

My project is turning on only the red led. what should I do?

[@ogulcan124]

Hi, I did the same by downgrading as you suggested and I worked successfully. However, the original project that I'm working on is already upgraded to the latest(4.25) version. Therefore, I'm trying to do the same project with the CubeMX version 4.25, and FW version 1.21, but it's not working. I thought maybe they fixed the problem in version 4.25 but apparently they did not. Is there a way of doing the project using the lastest versions? The problem is once any project is opened with the lasted version of CubeMX, it's upgraded automatically, and once it's done, there is no way of downgrading the CubeMX version of the project. If there is a way of downgrading the CubeMX version of a project, I can also make use of it. Besides, thanks for the videos, and I'm looking forward to see the next ones.

[@mutexembedded2206]

Hi Ogulcan, An easy way to do this, is to do the CubeMX set-up from scratch again with the Downgraded CubeMX and then, copy the code over from the previous one. I usually do that. Regards, Mohamed

[@ogulcan124]

Thanks for your reply. Unfortunately, my original project is very big and complicated. We have too may libraries to be added one by one, so this should be the latest solution to be applied. Besides, here are some solutions to the problem suggested by the authorities: 1) community.st.com/docs/DOC-1751-wa-proposal-when-using-fatfs-r012c-with-stm32cubemx This did not work for me, but maybe you can find a way. 2) community.st.com/message/173002-bug-report-stm32cubemx-423-sdinitialize Here I did not understand where to call the BSP_SD_Init() function.

[@mutexembedded2206]

I tried no. 2 with the SDIO issue, did not help. If you have a large project, then just add the SDIO library to the project manually,, it is a bit tedious but doable, you would have to include all the SDIO .h files and Add the .c files to your project.

[@ogulcan124]

Okay, I have some time to wait for the fix. If they won't be able to fix it in the next release, I'll do as you suggested. In the meantime, I'll implement my other tasks. Thanks for your effort, cheers.

[@mutexembedded2206]

Ogulcan Ariyurek That's Ok, good luck

[@TheWillReales]

a simple question alway when i want to save anything in SD do i have to mount it? or it's just necesary once?

[@mutexembedded2206]

Hi, just once

[@TheWillReales]

@@mutexembedded2206 thanks, I do really wait the tutorial lwip for TCP/IP, I've seen all your videos and I don't have stm32 yet XD XD hahah

[@张风帆-j6t]

It works! thank you for it.

[@rizqiuhuy]

now with STM32CUBEMX 5.1.0 with Firmware 1.24 only use dma_template on setting, set pull up except clk_gpio and activate dma_tx , dma_rx can mount sd card

[@Graham1904]

Great video. What is the purpose behind running SDIO with DMA as the data transfer is very fast and doesn't seem to block the CPU?

[@leonardoflss]

I guess it is useful for determinism on RT applications, such as control systems and data logging running concurrently.

[@pikoliii]

Hej, tnx. I made it work, folowing you tutorial. But the thing is, that now we are waiting in the function BSP_SD_WriteBlocks_DMA() until the transfer is finished, aka SD card not busy anymore. How is it better than "normal", blocking mode?

[@toufikiddou]

I'm working with Stm32f407VET6 Black Board and it's not working for me fresult = f_mount(&fs, "", 1); in mount_sd () gives me FR_NOT_READY . i hope you can help me

[@patlollasrujan8493]

for people facing problems with stm32f407vet6(blackboard) increase the SDIO clock divide factor to "11"

[@VishalVerma-xw9wb]

Hii, great work! would you consider using sd card in spi mode? can you make a video for the same?

[@mutexembedded2206]

Hi, SDIO is much easier with STM, than using SPI.

[@VishalVerma-xw9wb]

@@mutexembedded2206 is spi faster than sdio ? + Uses less pins

[@mohammadal-dossari299]

@@VishalVerma-xw9wb NO, SDIO 4-bit "at least" 4x faster than SPI

[@IrfanKhan-vu5ln]

Peace be upon you, Thanks for the tutorial. I'm new to STM32, and your tutorial help me alot. It gives me very good understanding of DISCOVERY BOARD. Can you please make a video on SD CARD using SPI MODE. Thank You,

[@47lokeshkumar74]

hi sir, your video has great impact, but when go to github link i could find the whole projw=ect what you have shown in youtube. I have only shown .c file and .h file thanks. Kindly upload whole project sir.

[@mutexembedded2206]

Hi Lokesh, Usually I only do application files. I will have a look if I still have this project on my PC

[@47lokeshkumar74]

@@mutexembedded2206 could you send one project which is sin wave generator and it is heard from audio jack to email [e-mail]

[@arashhashemi7091]

Good job sir, Where can I get that text file you have and that pdf? Could you please share both of them, thank you.

[@Graham1904]

Excellent. Full screen would be better

[@chickendinner6456]

firstly thank u for making this kind of videos, can you make a version with SPI pin, is it possible to make the same thing without using FAT_fs and handle the memory by your self ??

[@predatorszarak]

Hi, thank you for all your videos, they are amazing! Unfortunately, I followed all your steps in this video and I can't force my SD card to work. The problem is f_mount returns FR_NOT_READY. I've done completely clean installation of CubeMX 4.21, tried both with 1 bit and 4 bits sdio. I'm using the same board (F4 Discovery) with Pololu MicroSD board and pull-up resistors on every line. Tried with 2GB uSD card and 16GB SDHC card. But the problem still occurs. Do you have any suggestions about what I might be doing wrong?

[@lctasca]

Hi! Got the same issue here... Did you manage to solve it?

[@ogulcan124]

Did you try with the latest version 4.26?

[@lctasca]

Ogulcan Ariyurek no, I tried with 4.25 and it doesn't workshop either. Only version I managed to workshop was 4.21. Let me know if you tried and this issue is fixed on 4.26...

[@ogulcan124]

I tried with 4.26, but couldn't make it work. But maybe I'm doing someting else wrong.

[@jasonro7821]

Hello! I also have the same issue with 4-bit SDIO. I used CubeMX 4.21 + v1.16 Firmware + 8GB Class4 SDHC. But f_mount function does not work all the time. And I am sure that 1-bit SDIO is absolutely OK. In my opinion, f_mount function does not work whenever I use 4 -bit SDIO mode. Moreover, the latest CubeMX 4.26 + v1.21 Firmware has no problem with 1 bit SDIO. Is there anyone who can solve this problem?

[@amandioreal2293]

Hello, thank you for your videos. It's possible to make a video related to SPI and SD Card?

[@mutexembedded2206]

Hi, It is not very straight forward to code it with SPI, because STM consists of hardware SDIO core which does all SD card communication for you in hardware, very convenient.

[@g4tlan]

The first link is broken, please help

[@mutexembedded2206]

Hi, Here is an alternative link: drive.google.com/file/d/1BCnG5z03V8mKEQmL76cecNUoI745a_fZ/view

[@sarpdaltaban]

Dear Sir, the CubeMX old versions link you provide doesn't work and I couldn't find any other valid link. Can you help?

[@mutexembedded2206]

Hi mate, Here is another link for CubeMX 4.21: drive.google.com/file/d/1BCnG5z03V8mKEQmL76cecNUoI745a_fZ/view

[@sarpdaltaban]

Sir, thank you very much for sharing, I will be starting to work on the project with the eval kit STM3240G-EVAL. Then, I will modify the code for my own harware.

[@mutexembedded2206]

Great!

[@locle5227]

Do you know how to fix CubeMX version 5.4 without downgrading to CubeMX 4.2.1 ?

[@punit_patel]

Please make tutorial on SPI Flash such as 25q64fvsig.

[@ulhasrane3656]

Is it possible to share complete project instead of only text file. Or else is it possible to extract only those SDIO interface related files which are working well in older cubemx version and port to new Cubemx 4.27 firmware 1.21 project as a patch so we don''t need to scarify on latest cubemx version. Or else same patching procedure to make sdio card work in newer Cubemx 4.27 firmware 1.21 will be highly appreciable without downgrading to lower version

[@mutexembedded2206]

Hi Ulhas, Good point, I will try to upload the files when I get a free time. I am tight on time these few months.

[@mcasualjacques]

thanks millions ! I spent a few hours yesterday trying to make it work for a "black stm32F407VE" and with your help today my future biped robot stored 2 files containing the prophetic words "I the A.I. am no hairy casserole" first i tried with stworkbench/eclipse and stm32f4-discovery.net/download/tm-stm32-libraries/ then with cubemx5.0 but it kept warning me about not having a BSP driver a good news is that my "black stm32F407VE" seems intended as a compatible copy of the stm32F407VET6 didnt try the dma version yet my first goal is sending a raw audiofile to a DAC outpput i guess it will have to transit through the stm32 ram and someday maybe dma it from the sdcard directly to the DAC and another someday maybe send mp3 data to a VS1053 MP3 Music Shield Board

[@designworks7347]

king

[@salarsarehal390]

@ MYaqoobEmbedded Hi Mohammad, many thank for your great tutorial! I faced to a problem and really blocks me! I hope you can help me: I could implement the SD card project via SDIO protocol. I want to see the content of my SD card in pc using USB mass storage. I implement my project using stmcubemx version 4.21.0. The SD card works meaning that I can create a .txt file and write something into it. When I put the SD card into adapter and connect to PC, I can also see its contents, as expected. However, i can not see its contents using USB mass storage! In usbd_storage_if.c file, there is a STORAGE_READ_FS function to read SD card contents using USB. SInce it is originally empty, I modify it as follows: int8_t STORAGE_Read_FS (uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) { /* USER CODE BEGIN 6 */ HAL_SD_ReadBlocks(&hsd, buf, blk_addr, blk_len, 10); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_13, GPIO_PIN_SET); //Orange LED); return (USBD_OK); However, it doesn't work! Moreover, I cannot watch buf, blk_addr, blk_len in live watch to see what such arguments contain! It really blocks me for a while! Do you guys face such issue? or have any suggestions ? Infinite thanks in advance! Edmond

[@djaimededdin7456]

salem please how to create file in directory , can you make a video to this tutorial please

[@NextGen786]

Do you have Tutorial Freertos+lwip ?

[@mutexembedded2206]

Hi, I have used them but haven't prepared a video tutorial yet. It gets a bit more complex.

[@shan-nr8bq]

@@mutexembedded2206 Any update on this. If possible can please upload the code to github?

[@mohammadmahdibayat1179]

Hello Thanks for this new video It's Mohammad Mahdi again I founded that my problem is stm32f4 can't mount my sd card !! I've changed my sd card but didn't worked at all What should I do?!?! Thanks a lot

[@bariamak9491]

Hi! I'm trying to get it working on STM32F407VG and CubeMX 6.2.1. Firstly i configured SD to work in 1 bit mode, now I'm trying to do 1bit+DMA. (4 bit isn't working now, my card won't even mount) It is working, but not entirely. Things double /triple writes to text file. I'm not changing functions in bsp_driver_sd.c and sd_diskio.cd like you. When i do it's worse, than now (card won't even mount). Anyone got it to work recently on new versions of Cube? Thanks for help!

[@bariamak9491]

Also, i tried downgrading to Cube 4.2.1, but i can't get it to work with Attolic (if anyone has tips, tell me :) )

[@mutexembedded2206]

@@bariamak9491 Hi Maria, Forget about CubeMX if you are a long term user of STM32. As for your short term problem, use DMA template

[@bariamak9491]

@@mutexembedded2206 I have it enabled. My assume is that some register isn't cleaned properly (or on time). I think I have to go to programming on register like I did on AVRs. Thank you :)

[@Graham1904]

Great video I am sure but with my KZbin audio on maximum and my laptop audio on maximum I can hardly hear you. I have tested on other videos and all is 100%....

[@mutexembedded2206]

Yeah, I know. I was recording with a simple setup. Now I have a good recording equipment :)

[@gaborbakos3653]

Hi, thank you for the amazing video! Can you please upload the installation file of the v4.21 CubeMx? The download link is broken, and I could not find that version elsewhere. (The v.4.26.1 is the only available, but it does not work. I had a v4.16 from earlier, and that works. But I would need v4.21 too.) Thank you for your help!

[@designworks7347]

THE NEW VERSION OF PROTEUSISIS 8 use stm32 simulator

[@alejandroismael2109]

hi, can you put the pinout image? thanks

[@lctasca]

Good point, I would like to check it too... Could you post it @MYaqoobEmbedded ?

[@АлексейКечкин-о6д]

Thank

[@kenshintemp6431]

thanks and new help for 4bit in cubeMX new version: community.st.com/s/question/0D50X0000BYmvpbSQB/bug-in-stm32cubemx-for-sdio-4bit?t=1572627600199 ان شاء الله در نسخه های بالاتر از 5.4.0 این مشکل رفع خواهد شد. هر مشکل دیگه ایدر نرم افزار پیدا کردید به شرکت اطلاع بدید تا رفعش کنن. if any bug find in cubeMX then feedback to st company...

[@locle5227]

could you show me where to include the code