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Rtos API example
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mbed_us_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/us_ticker_api.h" 00017 00018 static ticker_event_queue_t events = { 0 }; 00019 00020 static ticker_irq_handler_type irq_handler = ticker_irq_handler; 00021 00022 static const ticker_interface_t us_interface = { 00023 .init = us_ticker_init, 00024 .read = us_ticker_read, 00025 .disable_interrupt = us_ticker_disable_interrupt, 00026 .clear_interrupt = us_ticker_clear_interrupt, 00027 .set_interrupt = us_ticker_set_interrupt, 00028 .fire_interrupt = us_ticker_fire_interrupt, 00029 .get_info = us_ticker_get_info, 00030 }; 00031 00032 static const ticker_data_t us_data = { 00033 .interface = &us_interface, 00034 .queue = &events 00035 }; 00036 00037 const ticker_data_t* get_us_ticker_data(void) 00038 { 00039 return &us_data; 00040 } 00041 00042 ticker_irq_handler_type set_us_ticker_irq_handler(ticker_irq_handler_type ticker_irq_handler) 00043 { 00044 ticker_irq_handler_type prev_irq_handler = irq_handler; 00045 00046 irq_handler = ticker_irq_handler; 00047 00048 return prev_irq_handler; 00049 } 00050 00051 void us_ticker_irq_handler(void) 00052 { 00053 if (irq_handler) { 00054 irq_handler(&us_data); 00055 } 00056 }
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