IRAM安全中断处理程序

Please note that the ISR is disabled during flash operation by default. To keep sending transactions during flash operations, enable CONFIG_SPI_MASTER_ISR_IN_IRAM and set ESP_INTR_FLAG_IRAM in the member spi_bus_config_t::intr_flags. In this case, all the transactions queued before starting flash operations will be handled by the ISR in parallel. Also note that the callback of each Device and their callee functions should be in IRAM, or your callback will crash due to cache miss. For more details