Gan likun / mbed-dev

00

platform/mbed_wait_api_no_rtos.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:13413ea9a877 3 *
ganlikun 0:13413ea9a877 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:13413ea9a877 5 * you may not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 6 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 9 *
ganlikun 0:13413ea9a877 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:13413ea9a877 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 13 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 14 * limitations under the License.
ganlikun 0:13413ea9a877 15 */
ganlikun 0:13413ea9a877 16
ganlikun 0:13413ea9a877 17 // This implementation of the wait functions will be compiled only
ganlikun 0:13413ea9a877 18 // if the RTOS is not present.
ganlikun 0:13413ea9a877 19 #ifndef MBED_CONF_RTOS_PRESENT
ganlikun 0:13413ea9a877 20
ganlikun 0:13413ea9a877 21 #include "platform/mbed_wait_api.h"
ganlikun 0:13413ea9a877 22 #include "hal/us_ticker_api.h"
ganlikun 0:13413ea9a877 23
ganlikun 0:13413ea9a877 24 void wait(float s) {
ganlikun 0:13413ea9a877 25 wait_us(s * 1000000.0f);
ganlikun 0:13413ea9a877 26 }
ganlikun 0:13413ea9a877 27
ganlikun 0:13413ea9a877 28 void wait_ms(int ms) {
ganlikun 0:13413ea9a877 29 wait_us(ms * 1000);
ganlikun 0:13413ea9a877 30 }
ganlikun 0:13413ea9a877 31
ganlikun 0:13413ea9a877 32 void wait_us(int us) {
ganlikun 0:13413ea9a877 33 const ticker_data_t *const ticker = get_us_ticker_data();
ganlikun 0:13413ea9a877 34 uint32_t start = ticker_read(ticker);
ganlikun 0:13413ea9a877 35 while ((ticker_read(ticker) - start) < (uint32_t)us);
ganlikun 0:13413ea9a877 36 }
ganlikun 0:13413ea9a877 37
ganlikun 0:13413ea9a877 38 #endif // #ifndef MBED_CONF_RTOS_PRESENT
ganlikun 0:13413ea9a877 39
ganlikun 0:13413ea9a877 40