Takaaki Numai / mbed-dev

inport from local

Dependents:   Hobbyking_Cheetah_0511

platform/mbed_wait_api_rtos.cpp@0:85b3fd62ea1a, 2020-03-16 (annotated)

Committer:
NYX
Date:
Mon Mar 16 06:35:48 2020 +0000
Revision:
0:85b3fd62ea1a
reinport to mbed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
NYX 0:85b3fd62ea1a 1 /* mbed Microcontroller Library
NYX 0:85b3fd62ea1a 2 * Copyright (c) 2006-2013 ARM Limited
NYX 0:85b3fd62ea1a 3 *
NYX 0:85b3fd62ea1a 4 * Licensed under the Apache License, Version 2.0 (the "License");
NYX 0:85b3fd62ea1a 5 * you may not use this file except in compliance with the License.
NYX 0:85b3fd62ea1a 6 * You may obtain a copy of the License at
NYX 0:85b3fd62ea1a 7 *
NYX 0:85b3fd62ea1a 8 * http://www.apache.org/licenses/LICENSE-2.0
NYX 0:85b3fd62ea1a 9 *
NYX 0:85b3fd62ea1a 10 * Unless required by applicable law or agreed to in writing, software
NYX 0:85b3fd62ea1a 11 * distributed under the License is distributed on an "AS IS" BASIS,
NYX 0:85b3fd62ea1a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
NYX 0:85b3fd62ea1a 13 * See the License for the specific language governing permissions and
NYX 0:85b3fd62ea1a 14 * limitations under the License.
NYX 0:85b3fd62ea1a 15 */
NYX 0:85b3fd62ea1a 16
NYX 0:85b3fd62ea1a 17 // This implementation of the wait functions will be compiled only
NYX 0:85b3fd62ea1a 18 // if the RTOS is present.
NYX 0:85b3fd62ea1a 19 #ifdef MBED_CONF_RTOS_PRESENT
NYX 0:85b3fd62ea1a 20
NYX 0:85b3fd62ea1a 21 #include "platform/mbed_wait_api.h"
NYX 0:85b3fd62ea1a 22 #include "hal/us_ticker_api.h"
NYX 0:85b3fd62ea1a 23 #include "rtos/rtos.h"
NYX 0:85b3fd62ea1a 24 #include "platform/mbed_critical.h"
NYX 0:85b3fd62ea1a 25 #include "platform/mbed_sleep.h"
NYX 0:85b3fd62ea1a 26
NYX 0:85b3fd62ea1a 27 void wait(float s) {
NYX 0:85b3fd62ea1a 28 wait_us(s * 1000000.0f);
NYX 0:85b3fd62ea1a 29 }
NYX 0:85b3fd62ea1a 30
NYX 0:85b3fd62ea1a 31 void wait_ms(int ms) {
NYX 0:85b3fd62ea1a 32 wait_us(ms * 1000);
NYX 0:85b3fd62ea1a 33 }
NYX 0:85b3fd62ea1a 34
NYX 0:85b3fd62ea1a 35 void wait_us(int us) {
NYX 0:85b3fd62ea1a 36 const ticker_data_t *const ticker = get_us_ticker_data();
NYX 0:85b3fd62ea1a 37
NYX 0:85b3fd62ea1a 38 uint32_t start = ticker_read(ticker);
NYX 0:85b3fd62ea1a 39 // Use the RTOS to wait for millisecond delays if possible
NYX 0:85b3fd62ea1a 40 int ms = us / 1000;
NYX 0:85b3fd62ea1a 41 if ((ms > 0) && core_util_are_interrupts_enabled()) {
NYX 0:85b3fd62ea1a 42 sleep_manager_lock_deep_sleep();
NYX 0:85b3fd62ea1a 43 Thread::wait((uint32_t)ms);
NYX 0:85b3fd62ea1a 44 sleep_manager_unlock_deep_sleep();
NYX 0:85b3fd62ea1a 45 }
NYX 0:85b3fd62ea1a 46 // Use busy waiting for sub-millisecond delays, or for the whole
NYX 0:85b3fd62ea1a 47 // interval if interrupts are not enabled
NYX 0:85b3fd62ea1a 48 while ((ticker_read(ticker) - start) < (uint32_t)us);
NYX 0:85b3fd62ea1a 49 }
NYX 0:85b3fd62ea1a 50
NYX 0:85b3fd62ea1a 51 #endif // #if MBED_CONF_RTOS_PRESENT
NYX 0:85b3fd62ea1a 52