125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "freertos/FreeRTOS.h"
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#include "esp_attr.h"
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#include "esp_freertos_hooks.h"
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//We use just a static array here because it's not expected many components will need
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//an idle or tick hook.
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#define MAX_HOOKS 8
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static portMUX_TYPE hooks_spinlock = portMUX_INITIALIZER_UNLOCKED;
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static esp_freertos_idle_cb_t idle_cb[portNUM_PROCESSORS][MAX_HOOKS]={0};
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static esp_freertos_tick_cb_t tick_cb[portNUM_PROCESSORS][MAX_HOOKS]={0};
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void IRAM_ATTR esp_vApplicationTickHook()
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{
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int n;
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int core = xPortGetCoreID();
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for (n=0; n<MAX_HOOKS; n++) {
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if (tick_cb[core][n]!=NULL) {
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tick_cb[core][n]();
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}
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}
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}
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void esp_vApplicationIdleHook()
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{
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bool doWait=true;
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bool r;
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int n;
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int core = xPortGetCoreID();
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for (n=0; n<MAX_HOOKS; n++) {
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if (idle_cb[core][n]!=NULL) {
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r=idle_cb[core][n]();
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if (!r) doWait=false;
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}
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}
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if (doWait) {
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//Wait for whatever interrupt comes next... this should save some power.
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asm("waiti 0");
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}
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}
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esp_err_t esp_register_freertos_idle_hook_for_cpu(esp_freertos_idle_cb_t new_idle_cb, UBaseType_t cpuid)
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{
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if(cpuid >= portNUM_PROCESSORS){
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return ESP_ERR_INVALID_ARG;
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}
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portENTER_CRITICAL(&hooks_spinlock);
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for(int n = 0; n < MAX_HOOKS; n++){
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if (idle_cb[cpuid][n]==NULL) {
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idle_cb[cpuid][n]=new_idle_cb;
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portEXIT_CRITICAL(&hooks_spinlock);
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return ESP_OK;
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}
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}
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portEXIT_CRITICAL(&hooks_spinlock);
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return ESP_ERR_NO_MEM;
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}
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esp_err_t esp_register_freertos_idle_hook(esp_freertos_idle_cb_t new_idle_cb)
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{
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return esp_register_freertos_idle_hook_for_cpu(new_idle_cb, xPortGetCoreID());
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}
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esp_err_t esp_register_freertos_tick_hook_for_cpu(esp_freertos_tick_cb_t new_tick_cb, UBaseType_t cpuid)
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{
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if(cpuid >= portNUM_PROCESSORS){
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return ESP_ERR_INVALID_ARG;
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}
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portENTER_CRITICAL(&hooks_spinlock);
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for(int n = 0; n < MAX_HOOKS; n++){
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if (tick_cb[cpuid][n]==NULL) {
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tick_cb[cpuid][n]=new_tick_cb;
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portEXIT_CRITICAL(&hooks_spinlock);
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return ESP_OK;
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}
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}
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portEXIT_CRITICAL(&hooks_spinlock);
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return ESP_ERR_NO_MEM;
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}
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esp_err_t esp_register_freertos_tick_hook(esp_freertos_tick_cb_t new_tick_cb)
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{
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return esp_register_freertos_tick_hook_for_cpu(new_tick_cb, xPortGetCoreID());
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}
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void esp_deregister_freertos_idle_hook(esp_freertos_idle_cb_t old_idle_cb)
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{
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portENTER_CRITICAL(&hooks_spinlock);
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for(int m = 0; m < portNUM_PROCESSORS; m++) {
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for(int n = 0; n < MAX_HOOKS; n++){
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if(idle_cb[m][n] == old_idle_cb) idle_cb[m][n] = NULL;
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}
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}
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portEXIT_CRITICAL(&hooks_spinlock);
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}
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void esp_deregister_freertos_tick_hook(esp_freertos_tick_cb_t old_tick_cb)
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{
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portENTER_CRITICAL(&hooks_spinlock);
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for(int m = 0; m < portNUM_PROCESSORS; m++){
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for(int n = 0; n < MAX_HOOKS; n++){
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if(tick_cb[m][n] == old_tick_cb) tick_cb[m][n] = NULL;
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}
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}
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portEXIT_CRITICAL(&hooks_spinlock);
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}
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