mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

platform/mbed_wait_api_rtos.cpp@181:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
181:57724642e740
Parent:
175:af195413fb11
Child:
184:08ed48f1de7f
mbed-dev library. Release version 159.

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
<> 160:d5399cc887bb 21 #include "platform/mbed_wait_api.h"
<> 149:156823d33999 22 #include "hal/us_ticker_api.h"
<> 149:156823d33999 23 #include "rtos/rtos.h"
<> 160:d5399cc887bb 24 #include "platform/mbed_critical.h"
AnnaBridge 175:af195413fb11 25 #include "platform/mbed_sleep.h"
<> 149:156823d33999 26
<> 149:156823d33999 27 void wait(float s) {
<> 149:156823d33999 28 wait_us(s * 1000000.0f);
<> 149:156823d33999 29 }
<> 149:156823d33999 30
<> 149:156823d33999 31 void wait_ms(int ms) {
<> 149:156823d33999 32 wait_us(ms * 1000);
<> 149:156823d33999 33 }
<> 149:156823d33999 34
<> 149:156823d33999 35 void wait_us(int us) {
AnnaBridge 175:af195413fb11 36 const ticker_data_t *const ticker = get_us_ticker_data();
AnnaBridge 175:af195413fb11 37
AnnaBridge 175:af195413fb11 38 uint32_t start = ticker_read(ticker);
<> 149:156823d33999 39 // Use the RTOS to wait for millisecond delays if possible
<> 149:156823d33999 40 int ms = us / 1000;
<> 149:156823d33999 41 if ((ms > 0) && core_util_are_interrupts_enabled()) {
AnnaBridge 175:af195413fb11 42 sleep_manager_lock_deep_sleep();
<> 149:156823d33999 43 Thread::wait((uint32_t)ms);
AnnaBridge 175:af195413fb11 44 sleep_manager_unlock_deep_sleep();
<> 149:156823d33999 45 }
<> 149:156823d33999 46 // Use busy waiting for sub-millisecond delays, or for the whole
<> 149:156823d33999 47 // interval if interrupts are not enabled
AnnaBridge 175:af195413fb11 48 while ((ticker_read(ticker) - start) < (uint32_t)us);
<> 149:156823d33999 49 }
<> 149:156823d33999 50
<> 149:156823d33999 51 #endif // #if MBED_CONF_RTOS_PRESENT
<> 149:156823d33999 52