Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

hal/common/mbed_wait_api_rtos.cpp@0:6c56fb4bc5f0, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:27:58 2016 +0000
Revision:
0:6c56fb4bc5f0
Moving to library for sharing updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /* mbed Microcontroller Library
nexpaq 0:6c56fb4bc5f0 2 * Copyright (c) 2006-2013 ARM Limited
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Licensed under the Apache License, Version 2.0 (the "License");
nexpaq 0:6c56fb4bc5f0 5 * you may not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 6 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 7 *
nexpaq 0:6c56fb4bc5f0 8 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 9 *
nexpaq 0:6c56fb4bc5f0 10 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 11 * distributed under the License is distributed on an "AS IS" BASIS,
nexpaq 0:6c56fb4bc5f0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 13 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 14 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 15 */
nexpaq 0:6c56fb4bc5f0 16
nexpaq 0:6c56fb4bc5f0 17 // This implementation of the wait functions will be compiled only
nexpaq 0:6c56fb4bc5f0 18 // if the RTOS is present.
nexpaq 0:6c56fb4bc5f0 19 #ifdef MBED_CONF_RTOS_PRESENT
nexpaq 0:6c56fb4bc5f0 20
nexpaq 0:6c56fb4bc5f0 21 #include "wait_api.h"
nexpaq 0:6c56fb4bc5f0 22 #include "us_ticker_api.h"
nexpaq 0:6c56fb4bc5f0 23 #include "rtos.h"
nexpaq 0:6c56fb4bc5f0 24 #include "critical.h"
nexpaq 0:6c56fb4bc5f0 25
nexpaq 0:6c56fb4bc5f0 26 void wait(float s) {
nexpaq 0:6c56fb4bc5f0 27 wait_us(s * 1000000.0f);
nexpaq 0:6c56fb4bc5f0 28 }
nexpaq 0:6c56fb4bc5f0 29
nexpaq 0:6c56fb4bc5f0 30 void wait_ms(int ms) {
nexpaq 0:6c56fb4bc5f0 31 wait_us(ms * 1000);
nexpaq 0:6c56fb4bc5f0 32 }
nexpaq 0:6c56fb4bc5f0 33
nexpaq 0:6c56fb4bc5f0 34 void wait_us(int us) {
nexpaq 0:6c56fb4bc5f0 35 uint32_t start = us_ticker_read();
nexpaq 0:6c56fb4bc5f0 36 // Use the RTOS to wait for millisecond delays if possible
nexpaq 0:6c56fb4bc5f0 37 int ms = us / 1000;
nexpaq 0:6c56fb4bc5f0 38 if ((ms > 0) && core_util_are_interrupts_enabled()) {
nexpaq 0:6c56fb4bc5f0 39 Thread::wait((uint32_t)ms);
nexpaq 0:6c56fb4bc5f0 40 us -= ms * 1000;
nexpaq 0:6c56fb4bc5f0 41 }
nexpaq 0:6c56fb4bc5f0 42 // Use busy waiting for sub-millisecond delays, or for the whole
nexpaq 0:6c56fb4bc5f0 43 // interval if interrupts are not enabled
nexpaq 0:6c56fb4bc5f0 44 if (us > 0) {
nexpaq 0:6c56fb4bc5f0 45 while((us_ticker_read() - start) < (uint32_t)us);
nexpaq 0:6c56fb4bc5f0 46 }
nexpaq 0:6c56fb4bc5f0 47 }
nexpaq 0:6c56fb4bc5f0 48
nexpaq 0:6c56fb4bc5f0 49 #endif // #if MBED_CONF_RTOS_PRESENT
nexpaq 0:6c56fb4bc5f0 50