Hello, Function bsp_sdram_init (inside bsp_sdram.c) is called shortly after the device reset, to initialize External Bus registers for SDRAM operation. Ideally this would be part of your BSP and something that's invoked from the bsp_init(), however you can call bsp_sdram_init later on your project (i.e. in R_BSP_WarmStart or tx_application_define_user) but it has to be done before any SDRAM access is made. Regards
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