esp_ipc_isr_init() function

Initialize the IPC ISR feature, must be called for each CPU This function initializes the IPC ISR feature and must be called before any other esp_ipc_isr...() functions. The IPC ISR feature allows for callbacks (written in assembly) to be run on a particular CPU in the context of a High Priority Interrupt. - This function will register a High Priority Interrupt for a CPU where it is called. The priority of the interrupts is dependent on the CONFIG_ESP_SYSTEM_CHECK_INT_LEVEL option. - Callbacks written in assembly can then run in context of the registered High Priority Interrupts - Callbacks can be executed by calling esp_ipc_isr_call() or esp_ipc_isr_call_blocking()