esp_rom_route_intr_matrix() function

Route peripheral interrupt sources to CPU's interrupt port by matrix Usually there're 4 steps to use an interrupt: 1. Route peripheral interrupt source to CPU. e.g. esp_rom_route_intr_matrix(0, ETS_WIFI_MAC_INTR_SOURCE, ETS_WMAC_INUM) 2. Set interrupt handler for CPU 3. Enable CPU interrupt 4. Enable peripheral interrupt

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Declaration

from esp_rom_sys.h:108

void esp_rom_route_intr_matrix(int cpu_core, uint32_t periph_intr_id, uint32_t cpu_intr_num);

Arguments

Argument

Description

cpu_core

The CPU number, which the peripheral interrupt will inform to

periph_intr_id

The peripheral interrupt source number

cpu_intr_num

The CPU (external) interrupt number. On targets that use CLIC as their interrupt controller, this number represents the external interrupt number. For example, passing `cpu_intr_num = i` to this function would in fact bind peripheral source to CPU interrupt `CLIC_EXT_INTR_NUM_OFFSET + i`.

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esp_rom_route_intr_matrix() function

Syntax

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