esp-idf/components/esp32/freertos_hooks.c

97 wiersze
2.3 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include "esp_attr.h"
#include "esp_freertos_hooks.h"
//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 esp_freertos_idle_cb_t idle_cb[MAX_HOOKS]={0};
static esp_freertos_tick_cb_t tick_cb[MAX_HOOKS]={0};
void IRAM_ATTR esp_vApplicationTickHook()
{
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (tick_cb[n]!=NULL) {
tick_cb[n]();
}
}
}
void esp_vApplicationIdleHook()
{
bool doWait=true;
bool r;
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (idle_cb[n]!=NULL) {
r=idle_cb[n]();
if (!r) doWait=false;
}
}
if (doWait) {
//Wait for whatever interrupt comes next... this should save some power.
asm("waiti 0");
}
}
esp_err_t esp_register_freertos_idle_hook(esp_freertos_idle_cb_t new_idle_cb)
{
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (idle_cb[n]==NULL) {
idle_cb[n]=new_idle_cb;
return ESP_OK;
}
}
return ESP_ERR_NO_MEM;
}
esp_err_t esp_register_freertos_tick_hook(esp_freertos_tick_cb_t new_tick_cb)
{
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (tick_cb[n]==NULL) {
tick_cb[n]=new_tick_cb;
return ESP_OK;
}
}
return ESP_ERR_NO_MEM;
}
void esp_deregister_freertos_idle_hook(esp_freertos_idle_cb_t old_idle_cb)
{
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (idle_cb[n]==old_idle_cb) idle_cb[n]=NULL;
}
}
void esp_deregister_freertos_tick_hook(esp_freertos_tick_cb_t old_tick_cb)
{
int n;
for (n=0; n<MAX_HOOKS; n++) {
if (tick_cb[n]==old_tick_cb) tick_cb[n]=NULL;
}
}