menu "ESP Ringbuf" config RINGBUF_IN_IRAM bool "Place ring buffer functions in IRAM" default n help Place ring buffer functions in IRAM for better performance. By default, ring buffer functions are placed in Flash to save IRAM. Enable this option if you need maximum performance for ring buffer operations. Note: This option increases IRAM usage. config RINGBUF_PLACE_ISR_FUNCTIONS_INTO_FLASH bool "Place ISR ringbuf functions into flash" depends on !RINGBUF_IN_IRAM 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