About BGavr.3

BGavr.3 · 2018-10-25

So I'm trying to implement the USB mass storage with an SD card connected to the STM32L4.I am using the STM32l476RG Nucleo board and have added the HSE clock source to the board.I have successfully implemented 1-bit SDIO with the FATFs middle-ware wh...

BGavr.3 · 2018-10-26

Hi I am currently having a very similar issue.Did you manage to find out what was happening?

BGavr.3 · 2018-10-26

well apparently that was not the issue, because after leaving my desk and coming back the USB device is no longer recognized by my PC....Now I am convinced it has to be a hardware issue because 10 mins ago I was able to read and write data to the SD ...

BGavr.3 · 2018-10-26

So I managed to fix the issue I was having this morning, and decided to post my solution in case someone else runs into the same problem.I forgot to include this line of code in my main.c /* Enable USB power on Pwrctrl CR2 register */ HAL_PWREx_Enabl...

BGavr.3 · 2018-10-26

Np WillAlso if you think the issue might be hardware related I would suggest using breakout boards similar to this one https://www.sparkfun.com/products/13743?_ga=2.202773905.1818468449.1540488118-2054388973.1537370868These are really cheap and speed...

BGavr.3 · 2018-10-25

check out these videos, they helped me when setting up SDMMC using CubeMXhttps://www.youtube.com/watch?v=Y5UMTGQDmog&t=141sHis channel is very helpful

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USB MSC sometimes is detected by my PC and sometimes is not

Re: USB device not enumerating sometimes

Re: USB MSC sometimes is detected by my PC and sometimes is not

Re: USB MSC sometimes is detected by my PC and sometimes is not

Re: STM32L4 SDMMC standalone mode (no RTOS): Works polled, not with DMA

Re: STM32L4 SDMMC standalone mode (no RTOS): Works polled, not with DMA