Daniel Sygut / Application

lol

Dependencies:   MMA8451Q

Fork of Application by Mateusz Kowalik

mbed-dev/platform/mbed_wait_api_rtos.cpp@12:3a30cdffa27c, 2018-01-21 (annotated)

Committer:
danix
Date:
Sun Jan 21 22:28:30 2018 +0000
Revision:
12:3a30cdffa27c
Parent:
10:41552d038a69 
Working acelerometer and mouse

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Zaitsev 10:41552d038a69 1 /* mbed Microcontroller Library
Zaitsev 10:41552d038a69 2 * Copyright (c) 2006-2013 ARM Limited
Zaitsev 10:41552d038a69 3 *
Zaitsev 10:41552d038a69 4 * Licensed under the Apache License, Version 2.0 (the "License");
Zaitsev 10:41552d038a69 5 * you may not use this file except in compliance with the License.
Zaitsev 10:41552d038a69 6 * You may obtain a copy of the License at
Zaitsev 10:41552d038a69 7 *
Zaitsev 10:41552d038a69 8 * http://www.apache.org/licenses/LICENSE-2.0
Zaitsev 10:41552d038a69 9 *
Zaitsev 10:41552d038a69 10 * Unless required by applicable law or agreed to in writing, software
Zaitsev 10:41552d038a69 11 * distributed under the License is distributed on an "AS IS" BASIS,
Zaitsev 10:41552d038a69 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Zaitsev 10:41552d038a69 13 * See the License for the specific language governing permissions and
Zaitsev 10:41552d038a69 14 * limitations under the License.
Zaitsev 10:41552d038a69 15 */
Zaitsev 10:41552d038a69 16
Zaitsev 10:41552d038a69 17 // This implementation of the wait functions will be compiled only
Zaitsev 10:41552d038a69 18 // if the RTOS is present.
Zaitsev 10:41552d038a69 19 #ifdef MBED_CONF_RTOS_PRESENT
Zaitsev 10:41552d038a69 20
Zaitsev 10:41552d038a69 21 #include "platform/wait_api.h"
Zaitsev 10:41552d038a69 22 #include "hal/us_ticker_api.h"
Zaitsev 10:41552d038a69 23 #include "rtos/rtos.h"
Zaitsev 10:41552d038a69 24 #include "platform/critical.h"
Zaitsev 10:41552d038a69 25
Zaitsev 10:41552d038a69 26 void wait(float s) {
Zaitsev 10:41552d038a69 27 wait_us(s * 1000000.0f);
Zaitsev 10:41552d038a69 28 }
Zaitsev 10:41552d038a69 29
Zaitsev 10:41552d038a69 30 void wait_ms(int ms) {
Zaitsev 10:41552d038a69 31 wait_us(ms * 1000);
Zaitsev 10:41552d038a69 32 }
Zaitsev 10:41552d038a69 33
Zaitsev 10:41552d038a69 34 void wait_us(int us) {
Zaitsev 10:41552d038a69 35 uint32_t start = us_ticker_read();
Zaitsev 10:41552d038a69 36 // Use the RTOS to wait for millisecond delays if possible
Zaitsev 10:41552d038a69 37 int ms = us / 1000;
Zaitsev 10:41552d038a69 38 if ((ms > 0) && core_util_are_interrupts_enabled()) {
Zaitsev 10:41552d038a69 39 Thread::wait((uint32_t)ms);
Zaitsev 10:41552d038a69 40 }
Zaitsev 10:41552d038a69 41 // Use busy waiting for sub-millisecond delays, or for the whole
Zaitsev 10:41552d038a69 42 // interval if interrupts are not enabled
Zaitsev 10:41552d038a69 43 while ((us_ticker_read() - start) < (uint32_t)us);
Zaitsev 10:41552d038a69 44 }
Zaitsev 10:41552d038a69 45
Zaitsev 10:41552d038a69 46 #endif // #if MBED_CONF_RTOS_PRESENT
Zaitsev 10:41552d038a69 47