esp-idf/components/esp_system/freertos_hooks.c

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/*
* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include "freertos/FreeRTOS.h"
#include "esp_attr.h"
#include "esp_freertos_hooks.h"
#include "esp_cpu.h"
#include "sdkconfig.h"
#if CONFIG_PM_ENABLE
#include "esp_pm.h"
#include "esp_private/pm_impl.h"
#endif
//We use just a static array here because it's not expected many components will need
//an idle or tick hook.
#define MAX_HOOKS 8
static portMUX_TYPE hooks_spinlock = portMUX_INITIALIZER_UNLOCKED;
static esp_freertos_idle_cb_t idle_cb[portNUM_PROCESSORS][MAX_HOOKS] = {0};
static esp_freertos_tick_cb_t tick_cb[portNUM_PROCESSORS][MAX_HOOKS] = {0};
void IRAM_ATTR esp_vApplicationTickHook(void)
{
int n;
int core = xPortGetCoreID();
for (n = 0; n < MAX_HOOKS; n++) {
if (tick_cb[core][n] != NULL) {
tick_cb[core][n]();
}
}
}
void esp_vApplicationIdleHook(void)
{
bool can_go_idle = true;
int core = xPortGetCoreID();
for (int n = 0; n < MAX_HOOKS; n++) {
if (idle_cb[core][n] != NULL && !idle_cb[core][n]()) {
can_go_idle = false;
}
}
if (!can_go_idle) {
return;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_impl_idle_hook();
esp_pm_impl_waiti();
#else
esp_cpu_wait_for_intr();
#endif
}
esp_err_t esp_register_freertos_idle_hook_for_cpu(esp_freertos_idle_cb_t new_idle_cb, UBaseType_t cpuid)
{
if (cpuid >= portNUM_PROCESSORS) {
return ESP_ERR_INVALID_ARG;
}
portENTER_CRITICAL(&hooks_spinlock);
for (int n = 0; n < MAX_HOOKS; n++) {
if (idle_cb[cpuid][n] == NULL) {
idle_cb[cpuid][n] = new_idle_cb;
portEXIT_CRITICAL(&hooks_spinlock);
return ESP_OK;
}
}
portEXIT_CRITICAL(&hooks_spinlock);
return ESP_ERR_NO_MEM;
}
esp_err_t esp_register_freertos_idle_hook(esp_freertos_idle_cb_t new_idle_cb)
{
return esp_register_freertos_idle_hook_for_cpu(new_idle_cb, xPortGetCoreID());
}
esp_err_t esp_register_freertos_tick_hook_for_cpu(esp_freertos_tick_cb_t new_tick_cb, UBaseType_t cpuid)
{
if (cpuid >= portNUM_PROCESSORS) {
return ESP_ERR_INVALID_ARG;
}
portENTER_CRITICAL(&hooks_spinlock);
for (int n = 0; n < MAX_HOOKS; n++) {
if (tick_cb[cpuid][n] == NULL) {
tick_cb[cpuid][n] = new_tick_cb;
portEXIT_CRITICAL(&hooks_spinlock);
return ESP_OK;
}
}
portEXIT_CRITICAL(&hooks_spinlock);
return ESP_ERR_NO_MEM;
}
esp_err_t esp_register_freertos_tick_hook(esp_freertos_tick_cb_t new_tick_cb)
{
return esp_register_freertos_tick_hook_for_cpu(new_tick_cb, xPortGetCoreID());
}
void esp_deregister_freertos_idle_hook_for_cpu(esp_freertos_idle_cb_t old_idle_cb, UBaseType_t cpuid)
{
if (cpuid >= portNUM_PROCESSORS) {
return;
}
portENTER_CRITICAL(&hooks_spinlock);
for (int n = 0; n < MAX_HOOKS; n++) {
if (idle_cb[cpuid][n] == old_idle_cb) {
idle_cb[cpuid][n] = NULL;
}
}
portEXIT_CRITICAL(&hooks_spinlock);
}
void esp_deregister_freertos_idle_hook(esp_freertos_idle_cb_t old_idle_cb)
{
portENTER_CRITICAL(&hooks_spinlock);
for (int m = 0; m < portNUM_PROCESSORS; m++) {
esp_deregister_freertos_idle_hook_for_cpu(old_idle_cb, m);
}
portEXIT_CRITICAL(&hooks_spinlock);
}
void esp_deregister_freertos_tick_hook_for_cpu(esp_freertos_tick_cb_t old_tick_cb, UBaseType_t cpuid)
{
if (cpuid >= portNUM_PROCESSORS) {
return;
}
portENTER_CRITICAL(&hooks_spinlock);
for (int n = 0; n < MAX_HOOKS; n++) {
if (tick_cb[cpuid][n] == old_tick_cb) {
tick_cb[cpuid][n] = NULL;
}
}
portEXIT_CRITICAL(&hooks_spinlock);
}
void esp_deregister_freertos_tick_hook(esp_freertos_tick_cb_t old_tick_cb)
{
portENTER_CRITICAL(&hooks_spinlock);
for (int m = 0; m < portNUM_PROCESSORS; m++) {
esp_deregister_freertos_tick_hook_for_cpu(old_tick_cb, m);
}
portEXIT_CRITICAL(&hooks_spinlock);
}