mbed_lp_ticker_api.c

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2015 ARM Limited
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License");
00006  * you may not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  *     http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS,
00013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 #include "hal/lp_ticker_api.h"
00018 #include "hal/mbed_lp_ticker_wrapper.h"
00019 
00020 #if DEVICE_LPTICKER
00021 
00022 static ticker_event_queue_t events = { 0 };
00023 
00024 static ticker_irq_handler_type irq_handler = ticker_irq_handler;
00025 
00026 static const ticker_interface_t lp_interface = {
00027     .init = lp_ticker_init,
00028     .read = lp_ticker_read,
00029     .disable_interrupt = lp_ticker_disable_interrupt,
00030     .clear_interrupt = lp_ticker_clear_interrupt,
00031     .set_interrupt = lp_ticker_set_interrupt,
00032     .fire_interrupt = lp_ticker_fire_interrupt,
00033     .get_info = lp_ticker_get_info,
00034     .free = lp_ticker_free,
00035 };
00036 
00037 static const ticker_data_t lp_data = {
00038     .interface = &lp_interface,
00039     .queue = &events,
00040 };
00041 
00042 const ticker_data_t *get_lp_ticker_data(void)
00043 {
00044 #if LPTICKER_DELAY_TICKS > 0
00045     return get_lp_ticker_wrapper_data(&lp_data);
00046 #else
00047     return &lp_data;
00048 #endif
00049 }
00050 
00051 ticker_irq_handler_type set_lp_ticker_irq_handler(ticker_irq_handler_type ticker_irq_handler)
00052 {
00053     ticker_irq_handler_type prev_irq_handler = irq_handler;
00054 
00055     irq_handler = ticker_irq_handler;
00056 
00057     return prev_irq_handler;
00058 }
00059 
00060 void lp_ticker_irq_handler(void)
00061 {
00062 #if LPTICKER_DELAY_TICKS > 0
00063     lp_ticker_wrapper_irq_handler(irq_handler);
00064 #else
00065     if (irq_handler) {
00066         irq_handler(&lp_data);
00067     }
00068 #endif
00069 }
00070 
00071 #endif