About vbesson

vbesson · 2024-10-23

Hello, I have a stm42f411 with SDIO 4B configured and working properly. the SDIO conf is the following: hsd.Instance = SDIO; hsd.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING; hsd.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE; hsd.Init.ClockPowerSave ...

vbesson · 2024-10-19

Hello, I continue my journey toward build a STM32 hardware emulator for the famous Apple II Disk II. I am implementing UF2 firmware management, USB drag & drag update. the new firmware is not starting, even if I see log of tinyuf2 passing to the appa...

vbesson · 2024-10-11

Hello Community, I am using a STM32F411, 2 timer with global interrupt and preemption priority of 0 are executing a timing critical process to bitbang a GPIO port.4uS timer periodAnd a I2C DMA process to update a SSD1306 screen I2C and DMA interrupt ...

vbesson · 2024-10-10

Hello, I am using a STM32F411 with SDIO (4bit) and fatfsWhen reading block I have regular SDMMC_ERROR_COM_CRC_FAILED error, from SDMMC_GetCmdResp1 function. What could be the reason for such error ? thanksVincent

vbesson · 2024-10-08

Hello, I have a STM32F411 and I am ready using the SDIO port, I would like to connect 2 SDCARD to the SDIO port and be able to switch from one to another like using a CS Chip select GPIO. Is it possible ? how would I do that ? Thanks Vincent

vbesson · 2024-10-28

Hello All, I finally found the issue, and it was not related to the STM32 nor the SDCARD. Using a cheap ST-LINK32 I discover that It was damaged and not providing the right output voltage to the STM32. Thus the init of the sdcard was not done correct...

vbesson · 2024-10-23

did you find a solution, I have the same behaviour ?Vincent

vbesson · 2024-10-23

same here, any solution on this ?

vbesson · 2024-10-23

it seems to be SDMMC_ERROR_CMD_RSP_TIMEOUTand ?

vbesson · 2024-10-21

I do not get what you mean by inter-stage ? I would use only one clock config function in the bootloader ? Vincent

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STM32F4x SDIO Issue with some SDCard

STM32F4X UF2 USER_VECT_TAB_ADDRESS, App not starting

NVIC TIM / I2C DMA Priority issue

SDIO FATFS SDMMC_ERROR_COM_CRC_FAILED

SDIO port with 2 SDCARD Chip Select

Re: STM32F4x SDIO Issue with some SDCard

Re: _SDIO_GET_FLAG Error

Re: Setup USB-OTG-FS with Mass Storage Class on a STM32469 Discovery Board with CubeMX

Re: STM32F4x SDIO Issue with some SDCard

Re: STM32F4X UF2 USER_VECT_TAB_ADDRESS, App not starting