mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 04:59:55 +00:00
332 lines
8.7 KiB
C
332 lines
8.7 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2014 Google, Inc.
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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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******************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include "osi/alarm.h"
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#include "osi/allocator.h"
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#include "osi/list.h"
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#include "esp_timer.h"
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#include "btc/btc_task.h"
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#include "btc/btc_alarm.h"
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#include "osi/mutex.h"
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#include "bt_common.h"
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typedef struct alarm_t {
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/* timer id point to here */
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esp_timer_handle_t alarm_hdl;
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osi_alarm_callback_t cb;
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void *cb_data;
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int64_t deadline_us;
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} osi_alarm_t;
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enum {
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ALARM_STATE_IDLE,
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ALARM_STATE_OPEN,
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};
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static osi_mutex_t alarm_mutex;
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static int alarm_state;
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#if (BT_BLE_DYNAMIC_ENV_MEMORY == FALSE)
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static struct alarm_t alarm_cbs[ALARM_CBS_NUM];
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#else
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static struct alarm_t *alarm_cbs;
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#endif
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static osi_alarm_err_t alarm_free(osi_alarm_t *alarm);
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static osi_alarm_err_t alarm_set(osi_alarm_t *alarm, period_ms_t timeout, bool is_periodic);
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int osi_alarm_create_mux(void)
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{
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if (alarm_state != ALARM_STATE_IDLE) {
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OSI_TRACE_WARNING("%s, invalid state %d\n", __func__, alarm_state);
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return -1;
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}
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osi_mutex_new(&alarm_mutex);
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return 0;
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}
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int osi_alarm_delete_mux(void)
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{
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if (alarm_state != ALARM_STATE_IDLE) {
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OSI_TRACE_WARNING("%s, invalid state %d\n", __func__, alarm_state);
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return -1;
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}
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osi_mutex_free(&alarm_mutex);
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return 0;
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}
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void osi_alarm_init(void)
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{
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assert(alarm_mutex != NULL);
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_IDLE) {
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OSI_TRACE_WARNING("%s, invalid state %d\n", __func__, alarm_state);
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goto end;
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}
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#if (BT_BLE_DYNAMIC_ENV_MEMORY == TRUE)
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if ((alarm_cbs = (osi_alarm_t *)osi_malloc(sizeof(osi_alarm_t) * ALARM_CBS_NUM)) == NULL) {
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OSI_TRACE_ERROR("%s, malloc failed\n", __func__);
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goto end;
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}
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#endif
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memset(alarm_cbs, 0x00, sizeof(osi_alarm_t) * ALARM_CBS_NUM);
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alarm_state = ALARM_STATE_OPEN;
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end:
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osi_mutex_unlock(&alarm_mutex);
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}
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void osi_alarm_deinit(void)
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{
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assert(alarm_mutex != NULL);
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_WARNING("%s, invalid state %d\n", __func__, alarm_state);
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goto end;
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}
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for (int i = 0; i < ALARM_CBS_NUM; i++) {
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if (alarm_cbs[i].alarm_hdl != NULL) {
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alarm_free(&alarm_cbs[i]);
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}
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}
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#if (BT_BLE_DYNAMIC_ENV_MEMORY == TRUE)
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osi_free(alarm_cbs);
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alarm_cbs = NULL;
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#endif
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alarm_state = ALARM_STATE_IDLE;
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end:
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osi_mutex_unlock(&alarm_mutex);
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}
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static struct alarm_t *alarm_cbs_lookfor_available(void)
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{
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int i;
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for (i = 0; i < ALARM_CBS_NUM; i++) {
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if (alarm_cbs[i].alarm_hdl == NULL) { //available
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OSI_TRACE_DEBUG("%s %d %p\n", __func__, i, &alarm_cbs[i]);
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return &alarm_cbs[i];
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}
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}
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return NULL;
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}
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static void alarm_cb_handler(struct alarm_t *alarm)
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{
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OSI_TRACE_DEBUG("TimerID %p\n", alarm);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_WARNING("%s, invalid state %d\n", __func__, alarm_state);
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return;
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}
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btc_msg_t msg;
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btc_alarm_args_t arg;
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msg.sig = BTC_SIG_API_CALL;
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msg.pid = BTC_PID_ALARM;
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arg.cb = alarm->cb;
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arg.cb_data = alarm->cb_data;
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btc_transfer_context(&msg, &arg, sizeof(btc_alarm_args_t), NULL);
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}
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osi_alarm_t *osi_alarm_new(const char *alarm_name, osi_alarm_callback_t callback, void *data, period_ms_t timer_expire)
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{
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assert(alarm_mutex != NULL);
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struct alarm_t *timer_id = NULL;
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_ERROR("%s, invalid state %d\n", __func__, alarm_state);
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timer_id = NULL;
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goto end;
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}
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timer_id = alarm_cbs_lookfor_available();
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if (!timer_id) {
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OSI_TRACE_ERROR("%s alarm_cbs exhausted\n", __func__);
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timer_id = NULL;
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goto end;
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}
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esp_timer_create_args_t tca;
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tca.callback = (esp_timer_cb_t)alarm_cb_handler;
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tca.arg = timer_id;
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tca.dispatch_method = ESP_TIMER_TASK;
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tca.name = alarm_name;
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timer_id->cb = callback;
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timer_id->cb_data = data;
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timer_id->deadline_us = 0;
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esp_err_t stat = esp_timer_create(&tca, &timer_id->alarm_hdl);
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if (stat != ESP_OK) {
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OSI_TRACE_ERROR("%s failed to create timer, err 0x%x\n", __func__, stat);
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timer_id = NULL;
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goto end;
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}
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end:
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osi_mutex_unlock(&alarm_mutex);
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return timer_id;
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}
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static osi_alarm_err_t alarm_free(osi_alarm_t *alarm)
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{
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if (!alarm || alarm->alarm_hdl == NULL) {
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OSI_TRACE_ERROR("%s null\n", __func__);
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return OSI_ALARM_ERR_INVALID_ARG;
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}
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esp_timer_stop(alarm->alarm_hdl);
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esp_err_t stat = esp_timer_delete(alarm->alarm_hdl);
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if (stat != ESP_OK) {
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OSI_TRACE_ERROR("%s failed to delete timer, err 0x%x\n", __func__, stat);
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return OSI_ALARM_ERR_FAIL;
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}
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memset(alarm, 0, sizeof(osi_alarm_t));
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return OSI_ALARM_ERR_PASS;
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}
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void osi_alarm_free(osi_alarm_t *alarm)
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{
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assert(alarm_mutex != NULL);
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_ERROR("%s, invalid state %d\n", __func__, alarm_state);
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goto end;
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}
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alarm_free(alarm);
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end:
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osi_mutex_unlock(&alarm_mutex);
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return;
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}
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static osi_alarm_err_t alarm_set(osi_alarm_t *alarm, period_ms_t timeout, bool is_periodic)
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{
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assert(alarm_mutex != NULL);
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osi_alarm_err_t ret = OSI_ALARM_ERR_PASS;
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_ERROR("%s, invalid state %d\n", __func__, alarm_state);
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ret = OSI_ALARM_ERR_INVALID_STATE;
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goto end;
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}
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if (!alarm || alarm->alarm_hdl == NULL) {
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OSI_TRACE_ERROR("%s null\n", __func__);
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ret = OSI_ALARM_ERR_INVALID_ARG;
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goto end;
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}
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int64_t timeout_us = 1000 * (int64_t)timeout;
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esp_err_t stat;
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if (is_periodic) {
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stat = esp_timer_start_periodic(alarm->alarm_hdl, (uint64_t)timeout_us);
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} else {
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stat = esp_timer_start_once(alarm->alarm_hdl, (uint64_t)timeout_us);
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}
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if (stat != ESP_OK) {
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OSI_TRACE_ERROR("%s failed to start timer, err 0x%x\n", __func__, stat);
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ret = OSI_ALARM_ERR_FAIL;
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goto end;
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}
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alarm->deadline_us = is_periodic ? 0 : (timeout_us + esp_timer_get_time());
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end:
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osi_mutex_unlock(&alarm_mutex);
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return ret;
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}
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osi_alarm_err_t osi_alarm_set(osi_alarm_t *alarm, period_ms_t timeout)
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{
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return alarm_set(alarm, timeout, FALSE);
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}
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osi_alarm_err_t osi_alarm_set_periodic(osi_alarm_t *alarm, period_ms_t period)
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{
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return alarm_set(alarm, period, TRUE);
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}
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osi_alarm_err_t osi_alarm_cancel(osi_alarm_t *alarm)
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{
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int ret = OSI_ALARM_ERR_PASS;
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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if (alarm_state != ALARM_STATE_OPEN) {
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OSI_TRACE_ERROR("%s, invalid state %d\n", __func__, alarm_state);
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ret = OSI_ALARM_ERR_INVALID_STATE;
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goto end;
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}
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if (!alarm || alarm->alarm_hdl == NULL) {
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OSI_TRACE_ERROR("%s null\n", __func__);
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ret = OSI_ALARM_ERR_INVALID_ARG;
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goto end;
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}
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esp_err_t stat = esp_timer_stop(alarm->alarm_hdl);
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if (stat != ESP_OK) {
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OSI_TRACE_DEBUG("%s failed to stop timer, err 0x%x\n", __func__, stat);
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ret = OSI_ALARM_ERR_FAIL;
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goto end;
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}
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end:
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osi_mutex_unlock(&alarm_mutex);
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return ret;
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}
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period_ms_t osi_alarm_get_remaining_ms(const osi_alarm_t *alarm)
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{
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assert(alarm_mutex != NULL);
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int64_t dt_us = 0;
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osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
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dt_us = alarm->deadline_us - esp_timer_get_time();
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osi_mutex_unlock(&alarm_mutex);
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return (dt_us > 0) ? (period_ms_t)(dt_us / 1000) : 0;
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}
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uint32_t osi_time_get_os_boottime_ms(void)
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{
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return (uint32_t)(esp_timer_get_time() / 1000);
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}
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bool osi_alarm_is_active(osi_alarm_t *alarm)
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{
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assert(alarm != NULL);
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if (alarm->alarm_hdl != NULL) {
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return esp_timer_is_active(alarm->alarm_hdl);
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}
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return false;
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}
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