1 /* mbed Microcontroller Library
2 * Copyright (c) 2015 ARM Limited
3 * SPDX-License-Identifier: Apache-2.0
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 #include "us_ticker_api.h"
19
20 #define DEVICE_USTICKER 1
21
22 #if DEVICE_USTICKER
23
24 static ticker_event_queue_t events = { 0 };
25
26 static ticker_irq_handler_type irq_handler = ticker_irq_handler;
27
28 static const ticker_interface_t us_interface = {
29 .init = us_ticker_init,
30 .read = us_ticker_read,
31 .disable_interrupt = us_ticker_disable_interrupt,
32 .clear_interrupt = us_ticker_clear_interrupt,
33 .set_interrupt = us_ticker_set_interrupt,
34 .fire_interrupt = us_ticker_fire_interrupt,
35 .get_info = us_ticker_get_info,
36 .free = us_ticker_free,
37 .runs_in_deep_sleep = false,
38 };
39
40 static const ticker_data_t us_data = {
41 .interface = &us_interface,
42 .queue = &events
43 };
44
get_us_ticker_data(void)45 const ticker_data_t *get_us_ticker_data(void)
46 {
47 return &us_data;
48 }
49
set_us_ticker_irq_handler(ticker_irq_handler_type ticker_irq_handler)50 ticker_irq_handler_type set_us_ticker_irq_handler(ticker_irq_handler_type ticker_irq_handler)
51 {
52 ticker_irq_handler_type prev_irq_handler = irq_handler;
53
54 irq_handler = ticker_irq_handler;
55
56 return prev_irq_handler;
57 }
58
us_ticker_irq_handler(void)59 void us_ticker_irq_handler(void)
60 {
61 if (irq_handler) {
62 irq_handler(&us_data);
63 }
64 }
65
66 #else
67
get_us_ticker_data(void)68 const ticker_data_t *get_us_ticker_data(void)
69 {
70 return NULL;
71 }
72
73 #endif // DEVICE_USTICKER
74