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auraner · 2020-01-14

Hi everyone,We have an issue when using QUADSPI (memory-mapped) on a STM32F7 microcontroller. The controller sporadically runs into a watchdog reset. Investigation showed that the crash always occurs during a LDM instruction from the memory-mapped fl...

auraner · 2019-07-03

Hi all,I am trying to write to SD Card through SDIO interface with DMA (1 data line) on a STM32F4 MCU on a custom made board. Configuration is done by CubeMX.When writing to one file at a rate of 200kBytes every 10 seconds, after some time (one minut...

auraner · 2020-01-20

We received a working solution from ST support team:"Based on description of the issue it seems it is famous combination of <7+QSPI+MPU. The M7 core can do a speculative reads to memories.Unfortunately it can also read the area of QSPI where is no me...

auraner · 2020-01-14

Thanks for the answer. As described in the errata sheet, disabling the timeout should solve the issue, but it does not in our case. Could you elaborate the issue at the end of the memory space?We are in contact with ST, but the communication speed is...

auraner · 2020-01-14

Thanks for the answer. As far as I understand now, the raising of CS after read operations is to lower power consumption of the flash and not a crucial step of the workaround. Since, we do not care about power consumption, this additional step should...

auraner · 2020-01-08

Thanks for your answer @Hoddy, unfortunately it does not solve our issue...

auraner · 2019-09-13

Hi,I introduced a fail-save machanism, that simply remounts the SD Card in case of any error and rewrites the data... Not the proper way to go, more like a work-around. We will try to reduce SDIO line length in a new PCB version and investigate the e...

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STM32F7 + QSPI (QUADSPI): Sporadic failure with memory-mapped flash memory. Disabling timeout does not help.

Sporadic SDMMC_ERROR_CMD_RSP_TIMEOUT using FatFS + SDIO + DMA

Re: STM32F7 + QSPI (QUADSPI): Sporadic failure with memory-mapped flash memory. Disabling timeout does not help.

Re: STM32F7 + QSPI (QUADSPI): Sporadic failure with memory-mapped flash memory. Disabling timeout does not help.

Re: STM32F7 + QSPI (QUADSPI): Sporadic failure with memory-mapped flash memory. Disabling timeout does not help.

Re: Sporadic SDMMC_ERROR_CMD_RSP_TIMEOUT using FatFS + SDIO + DMA

Re: Sporadic SDMMC_ERROR_CMD_RSP_TIMEOUT using FatFS + SDIO + DMA