menu "ESP Ringbuf" config RINGBUF_PLACE_FUNCTIONS_INTO_FLASH bool "Place non-ISR ringbuf functions into flash" default n help Place non-ISR ringbuf functions (like xRingbufferCreate/xRingbufferSend) into flash. This frees up IRAM, but the functions can no longer be called when the cache is disabled. config RINGBUF_PLACE_ISR_FUNCTIONS_INTO_FLASH bool "Place ISR ringbuf functions into flash" depends on RINGBUF_PLACE_FUNCTIONS_INTO_FLASH default n help Place ISR ringbuf functions (like xRingbufferSendFromISR/xRingbufferReceiveFromISR) into flash. This frees up IRAM, but the functions can no longer be called when the cache is disabled or from an IRAM interrupt context. This option is not compatible with ESP-IDF drivers which are configured to run the ISR from an IRAM context, e.g. CONFIG_UART_ISR_IN_IRAM. endmenu