CONFIG_COMPILER_DUMP_RTL_FILES=y CONFIG_I2S_ISR_IRAM_SAFE=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 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y # place non-ISR FreeRTOS functions in Flash CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y