Amit Gandhi / mbed-dev

test

Fork of mbed-dev by mbed official

platform/mbed_wait_api_rtos.cpp@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Child:
151:5eaa88a5bcc7
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2013 ARM Limited
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16
<> 149:156823d33999 17 // This implementation of the wait functions will be compiled only
<> 149:156823d33999 18 // if the RTOS is present.
<> 149:156823d33999 19 #ifdef MBED_CONF_RTOS_PRESENT
<> 149:156823d33999 20
<> 149:156823d33999 21 #include "platform/wait_api.h"
<> 149:156823d33999 22 #include "hal/us_ticker_api.h"
<> 149:156823d33999 23 #include "rtos/rtos.h"
<> 149:156823d33999 24 #include "platform/critical.h"
<> 149:156823d33999 25
<> 149:156823d33999 26 void wait(float s) {
<> 149:156823d33999 27 wait_us(s * 1000000.0f);
<> 149:156823d33999 28 }
<> 149:156823d33999 29
<> 149:156823d33999 30 void wait_ms(int ms) {
<> 149:156823d33999 31 wait_us(ms * 1000);
<> 149:156823d33999 32 }
<> 149:156823d33999 33
<> 149:156823d33999 34 void wait_us(int us) {
<> 149:156823d33999 35 uint32_t start = us_ticker_read();
<> 149:156823d33999 36 // Use the RTOS to wait for millisecond delays if possible
<> 149:156823d33999 37 int ms = us / 1000;
<> 149:156823d33999 38 if ((ms > 0) && core_util_are_interrupts_enabled()) {
<> 149:156823d33999 39 Thread::wait((uint32_t)ms);
<> 149:156823d33999 40 us -= ms * 1000;
<> 149:156823d33999 41 }
<> 149:156823d33999 42 // Use busy waiting for sub-millisecond delays, or for the whole
<> 149:156823d33999 43 // interval if interrupts are not enabled
<> 149:156823d33999 44 if (us > 0) {
<> 149:156823d33999 45 while((us_ticker_read() - start) < (uint32_t)us);
<> 149:156823d33999 46 }
<> 149:156823d33999 47 }
<> 149:156823d33999 48
<> 149:156823d33999 49 #endif // #if MBED_CONF_RTOS_PRESENT
<> 149:156823d33999 50