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I've had the opportunity spend about a week debugging incorrect configuration of SDRAM by BSP team. At first I blamed third party library with no source code available. Then it occurred to me that my initial SDRAM tests were doing word-by-word access. Third party library used memset which was optimised to use DMA for bulk transfers, which failed to write subsequent words in the same transaction.

An easy, one bit change in configuration registers of SDRAM fixed it. A week well spent!

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