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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

platform/mbed_wait_api_rtos.cpp@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2013 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16
group-onsemi 0:098463de4c5d 17 // This implementation of the wait functions will be compiled only
group-onsemi 0:098463de4c5d 18 // if the RTOS is present.
group-onsemi 0:098463de4c5d 19 #ifdef MBED_CONF_RTOS_PRESENT
group-onsemi 0:098463de4c5d 20
group-onsemi 0:098463de4c5d 21 #include "platform/wait_api.h"
group-onsemi 0:098463de4c5d 22 #include "hal/us_ticker_api.h"
group-onsemi 0:098463de4c5d 23 #include "rtos/rtos.h"
group-onsemi 0:098463de4c5d 24 #include "platform/critical.h"
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 void wait(float s) {
group-onsemi 0:098463de4c5d 27 wait_us(s * 1000000.0f);
group-onsemi 0:098463de4c5d 28 }
group-onsemi 0:098463de4c5d 29
group-onsemi 0:098463de4c5d 30 void wait_ms(int ms) {
group-onsemi 0:098463de4c5d 31 wait_us(ms * 1000);
group-onsemi 0:098463de4c5d 32 }
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 void wait_us(int us) {
group-onsemi 0:098463de4c5d 35 uint32_t start = us_ticker_read();
group-onsemi 0:098463de4c5d 36 // Use the RTOS to wait for millisecond delays if possible
group-onsemi 0:098463de4c5d 37 int ms = us / 1000;
group-onsemi 0:098463de4c5d 38 if ((ms > 0) && core_util_are_interrupts_enabled()) {
group-onsemi 0:098463de4c5d 39 Thread::wait((uint32_t)ms);
group-onsemi 0:098463de4c5d 40 }
group-onsemi 0:098463de4c5d 41 // Use busy waiting for sub-millisecond delays, or for the whole
group-onsemi 0:098463de4c5d 42 // interval if interrupts are not enabled
group-onsemi 0:098463de4c5d 43 while ((us_ticker_read() - start) < (uint32_t)us);
group-onsemi 0:098463de4c5d 44 }
group-onsemi 0:098463de4c5d 45
group-onsemi 0:098463de4c5d 46 #endif // #if MBED_CONF_RTOS_PRESENT
group-onsemi 0:098463de4c5d 47