mbed_lp_ticker_api.c

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