// Copyright 2010-2017 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. /* * ets_timer module implements a set of legacy timer APIs which are * used by the WiFi driver. This is done on top of the newer esp_timer APIs. * Applications should not use ets_timer functions, as they may change without * notice. */ #include #include "esp_types.h" #include "esp_log.h" #include "esp_attr.h" #include "esp_intr_alloc.h" #include "rom/ets_sys.h" #include "soc/frc_timer_reg.h" #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/semphr.h" #include "freertos/xtensa_api.h" #include "sdkconfig.h" #include "esp_timer.h" #include "esp_timer_impl.h" /* We abuse 'timer_arg' field of ETSTimer structure to hold a pointer to esp_timer */ #define ESP_TIMER(p_ets_timer) ((esp_timer_handle_t) (p_ets_timer)->timer_arg) /* We abuse 'timer_expire' field of ETSTimer structure to hold a magic value * signifying that the contents of the timer was zeroed out. */ #define TIMER_INITIALIZED_FIELD(p_ets_timer) ((p_ets_timer)->timer_expire) #define TIMER_INITIALIZED_VAL 0x12121212 static IRAM_ATTR bool timer_initialized(ETSTimer *ptimer) { return TIMER_INITIALIZED_FIELD(ptimer) == TIMER_INITIALIZED_VAL; } void ets_timer_setfn(ETSTimer *ptimer, ETSTimerFunc *pfunction, void *parg) { if (!timer_initialized(ptimer)) { memset(ptimer, 0, sizeof(*ptimer)); TIMER_INITIALIZED_FIELD(ptimer) = TIMER_INITIALIZED_VAL; } if (ESP_TIMER(ptimer) == NULL) { const esp_timer_create_args_t create_args = { .callback = pfunction, .arg = parg, .name = "ETSTimer", .dispatch_method = ESP_TIMER_TASK }; ESP_ERROR_CHECK( esp_timer_create(&create_args, (esp_timer_handle_t*)&(ptimer->timer_arg)) ); } } void IRAM_ATTR ets_timer_arm_us(ETSTimer *ptimer, uint32_t time_us, bool repeat_flag) { assert(timer_initialized(ptimer)); esp_timer_stop(ESP_TIMER(ptimer)); // no error check if (!repeat_flag) { ESP_ERROR_CHECK( esp_timer_start_once(ESP_TIMER(ptimer), time_us) ); } else { ESP_ERROR_CHECK( esp_timer_start_periodic(ESP_TIMER(ptimer), time_us) ); } } void IRAM_ATTR ets_timer_arm(ETSTimer *ptimer, uint32_t time_ms, bool repeat_flag) { uint64_t time_us = 1000LL * (uint64_t) time_ms; assert(timer_initialized(ptimer)); esp_timer_stop(ESP_TIMER(ptimer)); // no error check if (!repeat_flag) { ESP_ERROR_CHECK( esp_timer_start_once(ESP_TIMER(ptimer), time_us) ); } else { ESP_ERROR_CHECK( esp_timer_start_periodic(ESP_TIMER(ptimer), time_us) ); } } void ets_timer_done(ETSTimer *ptimer) { if (timer_initialized(ptimer)) { esp_timer_delete(ESP_TIMER(ptimer)); ptimer->timer_arg = NULL; TIMER_INITIALIZED_FIELD(ptimer) = 0; } } void IRAM_ATTR ets_timer_disarm(ETSTimer *ptimer) { if (timer_initialized(ptimer)) { esp_timer_stop(ESP_TIMER(ptimer)); } } void ets_timer_init(void) { } void ets_timer_deinit(void) { } void os_timer_setfn(ETSTimer *ptimer, ETSTimerFunc *pfunction, void *parg) __attribute__((alias("ets_timer_setfn"))); void os_timer_disarm(ETSTimer *ptimer) __attribute__((alias("ets_timer_disarm"))); void os_timer_arm_us(ETSTimer *ptimer,uint32_t u_seconds,bool repeat_flag) __attribute__((alias("ets_timer_arm_us"))); void os_timer_arm(ETSTimer *ptimer,uint32_t milliseconds,bool repeat_flag) __attribute__((alias("ets_timer_arm"))); void os_timer_done(ETSTimer *ptimer) __attribute__((alias("ets_timer_done")));