menu "Memory" config ESP32_RTCDATA_IN_FAST_MEM bool "Place RTC_DATA_ATTR and RTC_RODATA_ATTR variables into RTC fast memory segment" default n depends on FREERTOS_UNICORE help This option allows to place .rtc_data and .rtc_rodata sections into RTC fast memory segment to free the slow memory region for ULP programs. This option depends on the CONFIG_FREERTOS_UNICORE option because RTC fast memory can be accessed only by PRO_CPU core. config ESP32_USE_FIXED_STATIC_RAM_SIZE bool "Use fixed static RAM size" default n help If this option is disabled, the DRAM part of the heap starts right after the .bss section, within the dram0_0 region. As a result, adding or removing some static variables will change the available heap size. If this option is enabled, the DRAM part of the heap starts right after the dram0_0 region, where its length is set with ESP32_FIXED_STATIC_RAM_SIZE config ESP32_FIXED_STATIC_RAM_SIZE hex "Fixed Static RAM size" default 0x1E000 range 0 0x2c200 depends on ESP32_USE_FIXED_STATIC_RAM_SIZE help RAM size dedicated for static variables (.data & .bss sections). Please note that the actual length will be reduced by BTDM_RESERVE_DRAM if Bluetooth controller is enabled. config ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY bool "Enable IRAM as 8 bit accessible memory" depends on FREERTOS_UNICORE help If enabled, application can use IRAM as byte accessible region for storing data (Note: IRAM region cannot be used as task stack) This is possible due to handling of exceptions `LoadStoreError (3)` and `LoadStoreAlignmentError (9)` Each unaligned read/write access will incur a penalty of maximum of 167 CPU cycles. endmenu # Memory