Thomas Lyp / DevLibMemoryController

Initial commit

Dependencies:   FastPWM

mbed-dev-master/platform/mbed_wait_api_rtos.cpp@0:bb348c97df44, 2020-09-16 (annotated)

Committer:
lypinator
Date:
Wed Sep 16 01:11:49 2020 +0000
Revision:
0:bb348c97df44
Added PWM

Who changed what in which revision?

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lypinator 0:bb348c97df44 1 /* mbed Microcontroller Library
lypinator 0:bb348c97df44 2 * Copyright (c) 2006-2013 ARM Limited
lypinator 0:bb348c97df44 3 *
lypinator 0:bb348c97df44 4 * Licensed under the Apache License, Version 2.0 (the "License");
lypinator 0:bb348c97df44 5 * you may not use this file except in compliance with the License.
lypinator 0:bb348c97df44 6 * You may obtain a copy of the License at
lypinator 0:bb348c97df44 7 *
lypinator 0:bb348c97df44 8 * http://www.apache.org/licenses/LICENSE-2.0
lypinator 0:bb348c97df44 9 *
lypinator 0:bb348c97df44 10 * Unless required by applicable law or agreed to in writing, software
lypinator 0:bb348c97df44 11 * distributed under the License is distributed on an "AS IS" BASIS,
lypinator 0:bb348c97df44 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
lypinator 0:bb348c97df44 13 * See the License for the specific language governing permissions and
lypinator 0:bb348c97df44 14 * limitations under the License.
lypinator 0:bb348c97df44 15 */
lypinator 0:bb348c97df44 16
lypinator 0:bb348c97df44 17 // This implementation of the wait functions will be compiled only
lypinator 0:bb348c97df44 18 // if the RTOS is present.
lypinator 0:bb348c97df44 19 #ifdef MBED_CONF_RTOS_PRESENT
lypinator 0:bb348c97df44 20
lypinator 0:bb348c97df44 21 #include "platform/mbed_wait_api.h"
lypinator 0:bb348c97df44 22 #include "hal/us_ticker_api.h"
lypinator 0:bb348c97df44 23 #include "rtos/rtos.h"
lypinator 0:bb348c97df44 24 #include "platform/mbed_critical.h"
lypinator 0:bb348c97df44 25 #include "platform/mbed_power_mgmt.h"
lypinator 0:bb348c97df44 26
lypinator 0:bb348c97df44 27 void wait(float s)
lypinator 0:bb348c97df44 28 {
lypinator 0:bb348c97df44 29 wait_us(s * 1000000.0f);
lypinator 0:bb348c97df44 30 }
lypinator 0:bb348c97df44 31
lypinator 0:bb348c97df44 32 void wait_ms(int ms)
lypinator 0:bb348c97df44 33 {
lypinator 0:bb348c97df44 34 wait_us(ms * 1000);
lypinator 0:bb348c97df44 35 }
lypinator 0:bb348c97df44 36
lypinator 0:bb348c97df44 37 void wait_us(int us)
lypinator 0:bb348c97df44 38 {
lypinator 0:bb348c97df44 39 const ticker_data_t *const ticker = get_us_ticker_data();
lypinator 0:bb348c97df44 40
lypinator 0:bb348c97df44 41 uint32_t start = ticker_read(ticker);
lypinator 0:bb348c97df44 42 if ((us >= 1000) && core_util_are_interrupts_enabled()) {
lypinator 0:bb348c97df44 43 // Use the RTOS to wait for millisecond delays if possible
lypinator 0:bb348c97df44 44 sleep_manager_lock_deep_sleep();
lypinator 0:bb348c97df44 45 Thread::wait((uint32_t)us / 1000);
lypinator 0:bb348c97df44 46 sleep_manager_unlock_deep_sleep();
lypinator 0:bb348c97df44 47 }
lypinator 0:bb348c97df44 48 // Use busy waiting for sub-millisecond delays, or for the whole
lypinator 0:bb348c97df44 49 // interval if interrupts are not enabled
lypinator 0:bb348c97df44 50 while ((ticker_read(ticker) - start) < (uint32_t)us);
lypinator 0:bb348c97df44 51 }
lypinator 0:bb348c97df44 52
lypinator 0:bb348c97df44 53 #endif // #if MBED_CONF_RTOS_PRESENT
lypinator 0:bb348c97df44 54