mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
platform/mbed_wait_api_rtos.cpp@189:f392fc9709a3, 2019-02-20 (annotated)
- Committer:
- AnnaBridge
- Date:
- Wed Feb 20 22:31:08 2019 +0000
- Revision:
- 189:f392fc9709a3
- Parent:
- 187:0387e8f68319
mbed library release version 165
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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<> | 149:156823d33999 | 1 | /* mbed Microcontroller Library |
<> | 149:156823d33999 | 2 | * Copyright (c) 2006-2013 ARM Limited |
AnnaBridge | 189:f392fc9709a3 | 3 | * SPDX-License-Identifier: Apache-2.0 |
<> | 149:156823d33999 | 4 | * |
<> | 149:156823d33999 | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 149:156823d33999 | 6 | * you may not use this file except in compliance with the License. |
<> | 149:156823d33999 | 7 | * You may obtain a copy of the License at |
<> | 149:156823d33999 | 8 | * |
<> | 149:156823d33999 | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 149:156823d33999 | 10 | * |
<> | 149:156823d33999 | 11 | * Unless required by applicable law or agreed to in writing, software |
<> | 149:156823d33999 | 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 149:156823d33999 | 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 149:156823d33999 | 14 | * See the License for the specific language governing permissions and |
<> | 149:156823d33999 | 15 | * limitations under the License. |
<> | 149:156823d33999 | 16 | */ |
<> | 149:156823d33999 | 17 | |
<> | 149:156823d33999 | 18 | // This implementation of the wait functions will be compiled only |
<> | 149:156823d33999 | 19 | // if the RTOS is present. |
<> | 149:156823d33999 | 20 | #ifdef MBED_CONF_RTOS_PRESENT |
<> | 149:156823d33999 | 21 | |
<> | 160:d5399cc887bb | 22 | #include "platform/mbed_wait_api.h" |
<> | 149:156823d33999 | 23 | #include "hal/us_ticker_api.h" |
AnnaBridge | 189:f392fc9709a3 | 24 | #include "rtos/ThisThread.h" |
<> | 160:d5399cc887bb | 25 | #include "platform/mbed_critical.h" |
AnnaBridge | 184:08ed48f1de7f | 26 | #include "platform/mbed_power_mgmt.h" |
AnnaBridge | 189:f392fc9709a3 | 27 | #include "platform/mbed_error.h" |
AnnaBridge | 189:f392fc9709a3 | 28 | #include "rtos/ThisThread.h" |
<> | 149:156823d33999 | 29 | |
AnnaBridge | 187:0387e8f68319 | 30 | void wait(float s) |
AnnaBridge | 187:0387e8f68319 | 31 | { |
AnnaBridge | 189:f392fc9709a3 | 32 | if ((s >= 0.01f) && core_util_are_interrupts_enabled()) { |
AnnaBridge | 189:f392fc9709a3 | 33 | wait_ms(s * 1000.0f); |
AnnaBridge | 189:f392fc9709a3 | 34 | return; |
AnnaBridge | 189:f392fc9709a3 | 35 | } |
<> | 149:156823d33999 | 36 | |
AnnaBridge | 189:f392fc9709a3 | 37 | uint32_t us = (s * 1000000.0f); |
AnnaBridge | 175:af195413fb11 | 38 | const ticker_data_t *const ticker = get_us_ticker_data(); |
AnnaBridge | 175:af195413fb11 | 39 | uint32_t start = ticker_read(ticker); |
AnnaBridge | 187:0387e8f68319 | 40 | if ((us >= 1000) && core_util_are_interrupts_enabled()) { |
AnnaBridge | 187:0387e8f68319 | 41 | // Use the RTOS to wait for millisecond delays if possible |
AnnaBridge | 175:af195413fb11 | 42 | sleep_manager_lock_deep_sleep(); |
AnnaBridge | 189:f392fc9709a3 | 43 | rtos::ThisThread::sleep_for((uint32_t)us / 1000); |
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 | |
AnnaBridge | 189:f392fc9709a3 | 51 | /* The actual time delay may be up to one timer tick less - 1 msec */ |
AnnaBridge | 189:f392fc9709a3 | 52 | void wait_ms(int ms) |
AnnaBridge | 189:f392fc9709a3 | 53 | { |
AnnaBridge | 189:f392fc9709a3 | 54 | if (core_util_is_isr_active() || !core_util_are_interrupts_enabled()) { |
AnnaBridge | 189:f392fc9709a3 | 55 | #if defined(MBED_TRAP_ERRORS_ENABLED) && MBED_TRAP_ERRORS_ENABLED |
AnnaBridge | 189:f392fc9709a3 | 56 | MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_INVALID_OPERATION), |
AnnaBridge | 189:f392fc9709a3 | 57 | "Deprecated behavior: milli-sec delay should not be used in interrupt.\n"); |
AnnaBridge | 189:f392fc9709a3 | 58 | #else |
AnnaBridge | 189:f392fc9709a3 | 59 | wait_us(ms * 1000); |
AnnaBridge | 189:f392fc9709a3 | 60 | #endif |
AnnaBridge | 189:f392fc9709a3 | 61 | } else { |
AnnaBridge | 189:f392fc9709a3 | 62 | rtos::ThisThread::sleep_for(ms); |
AnnaBridge | 189:f392fc9709a3 | 63 | } |
AnnaBridge | 189:f392fc9709a3 | 64 | } |
AnnaBridge | 189:f392fc9709a3 | 65 | |
AnnaBridge | 189:f392fc9709a3 | 66 | /* The actual time delay may be 1 less usec */ |
AnnaBridge | 189:f392fc9709a3 | 67 | void wait_us(int us) |
AnnaBridge | 189:f392fc9709a3 | 68 | { |
AnnaBridge | 189:f392fc9709a3 | 69 | if (us > 10000) { |
AnnaBridge | 189:f392fc9709a3 | 70 | MBED_WARNING(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_UNKNOWN), |
AnnaBridge | 189:f392fc9709a3 | 71 | "wait_us blocks deep sleep, wait_ms recommended for long delays\n"); |
AnnaBridge | 189:f392fc9709a3 | 72 | } |
AnnaBridge | 189:f392fc9709a3 | 73 | const ticker_data_t *const ticker = get_us_ticker_data(); |
AnnaBridge | 189:f392fc9709a3 | 74 | uint32_t start = ticker_read(ticker); |
AnnaBridge | 189:f392fc9709a3 | 75 | while ((ticker_read(ticker) - start) < (uint32_t)us); |
AnnaBridge | 189:f392fc9709a3 | 76 | } |
AnnaBridge | 189:f392fc9709a3 | 77 | |
<> | 149:156823d33999 | 78 | #endif // #if MBED_CONF_RTOS_PRESENT |
<> | 149:156823d33999 | 79 |