094cf4d79d
Moves the ets_timer_arm() / ets_timer_disarm() code paths to RAM Overhead is 740 bytes of IRAM, 0 bytes DRAM (For comparison: If all of esp_timer.c is moved to RAM, overhead is 1068 bytes IRAM and 480 bytes DRAM.)
126 lines
4 KiB
C
126 lines
4 KiB
C
// Copyright 2010-2017 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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//
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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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/*
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* ets_timer module implements a set of legacy timer APIs which are
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* used by the WiFi driver. This is done on top of the newer esp_timer APIs.
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* Applications should not use ets_timer functions, as they may change without
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* notice.
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*/
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#include <string.h>
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#include "esp_types.h"
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#include "esp_log.h"
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#include "esp_attr.h"
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#include "esp_intr_alloc.h"
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#include "rom/ets_sys.h"
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#include "soc/frc_timer_reg.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "freertos/xtensa_api.h"
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#include "sdkconfig.h"
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#include "esp_timer.h"
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#include "esp_timer_impl.h"
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/* We abuse 'timer_arg' field of ETSTimer structure to hold a pointer to esp_timer */
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#define ESP_TIMER(p_ets_timer) ((esp_timer_handle_t) (p_ets_timer)->timer_arg)
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/* We abuse 'timer_expire' field of ETSTimer structure to hold a magic value
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* signifying that the contents of the timer was zeroed out.
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*/
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#define TIMER_INITIALIZED_FIELD(p_ets_timer) ((p_ets_timer)->timer_expire)
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#define TIMER_INITIALIZED_VAL 0x12121212
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static IRAM_ATTR bool timer_initialized(ETSTimer *ptimer)
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{
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return TIMER_INITIALIZED_FIELD(ptimer) == TIMER_INITIALIZED_VAL;
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}
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void ets_timer_setfn(ETSTimer *ptimer, ETSTimerFunc *pfunction, void *parg)
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{
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if (!timer_initialized(ptimer)) {
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memset(ptimer, 0, sizeof(*ptimer));
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TIMER_INITIALIZED_FIELD(ptimer) = TIMER_INITIALIZED_VAL;
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}
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if (ESP_TIMER(ptimer) == NULL) {
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const esp_timer_create_args_t create_args = {
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.callback = pfunction,
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.arg = parg,
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.name = "ETSTimer",
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.dispatch_method = ESP_TIMER_TASK
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};
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ESP_ERROR_CHECK( esp_timer_create(&create_args, (esp_timer_handle_t*)&(ptimer->timer_arg)) );
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}
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}
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void IRAM_ATTR ets_timer_arm_us(ETSTimer *ptimer, uint32_t time_us, bool repeat_flag)
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{
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assert(timer_initialized(ptimer));
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esp_timer_stop(ESP_TIMER(ptimer)); // no error check
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if (!repeat_flag) {
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ESP_ERROR_CHECK( esp_timer_start_once(ESP_TIMER(ptimer), time_us) );
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} else {
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ESP_ERROR_CHECK( esp_timer_start_periodic(ESP_TIMER(ptimer), time_us) );
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}
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}
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void IRAM_ATTR ets_timer_arm(ETSTimer *ptimer, uint32_t time_ms, bool repeat_flag)
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{
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uint64_t time_us = 1000LL * (uint64_t) time_ms;
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assert(timer_initialized(ptimer));
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esp_timer_stop(ESP_TIMER(ptimer)); // no error check
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if (!repeat_flag) {
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ESP_ERROR_CHECK( esp_timer_start_once(ESP_TIMER(ptimer), time_us) );
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} else {
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ESP_ERROR_CHECK( esp_timer_start_periodic(ESP_TIMER(ptimer), time_us) );
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}
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}
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void ets_timer_done(ETSTimer *ptimer)
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{
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if (timer_initialized(ptimer)) {
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esp_timer_delete(ESP_TIMER(ptimer));
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ptimer->timer_arg = NULL;
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TIMER_INITIALIZED_FIELD(ptimer) = 0;
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}
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}
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void IRAM_ATTR ets_timer_disarm(ETSTimer *ptimer)
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{
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if (timer_initialized(ptimer)) {
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esp_timer_stop(ESP_TIMER(ptimer));
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}
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}
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void ets_timer_init(void)
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{
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}
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void ets_timer_deinit(void)
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{
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}
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void os_timer_setfn(ETSTimer *ptimer, ETSTimerFunc *pfunction, void *parg) __attribute__((alias("ets_timer_setfn")));
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void os_timer_disarm(ETSTimer *ptimer) __attribute__((alias("ets_timer_disarm")));
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void os_timer_arm_us(ETSTimer *ptimer,uint32_t u_seconds,bool repeat_flag) __attribute__((alias("ets_timer_arm_us")));
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void os_timer_arm(ETSTimer *ptimer,uint32_t milliseconds,bool repeat_flag) __attribute__((alias("ets_timer_arm")));
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void os_timer_done(ETSTimer *ptimer) __attribute__((alias("ets_timer_done")));
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