CONFIG_COMPILER_DUMP_RTL_FILES=y CONFIG_SPI_MASTER_ISR_IN_IRAM=n CONFIG_SPI_SLAVE_ISR_IN_IRAM=y CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=y CONFIG_COMPILER_OPTIMIZATION_NONE=y # silent the error check, as the error string are stored in rodata, causing RTL check failure CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y