diff --git a/components/freertos/port.c b/components/freertos/port.c index ba406d88f..734e3d66c 100644 --- a/components/freertos/port.c +++ b/components/freertos/port.c @@ -298,6 +298,11 @@ void vPortAssertIfInISR() * For kernel use: Initialize a per-CPU mux. Mux will be initialized unlocked. */ void vPortCPUInitializeMutex(portMUX_TYPE *mux) { +#if defined(CONFIG_SPIRAM_SUPPORT) + // Check if mux belongs to internal memory (DRAM), prerequisite for atomic operations + configASSERT(esp_ptr_internal((const void *) mux)); +#endif + #ifdef CONFIG_FREERTOS_PORTMUX_DEBUG ets_printf("Initializing mux %p\n", mux); mux->lastLockedFn="(never locked)";