Vipin Ranka / MGAS_GR_Peach

This is the final version of Mini Gateway for Automation and Security desgined for Renesas GR Peach Design Contest

Dependencies:   GR-PEACH_video GraphicsFramework HTTPServer R_BSP mbed-rpc mbed-rtos Socket lwip-eth lwip-sys lwip FATFileSystem

Fork of mbed-os-example-mbed5-blinky by mbed-os-examples

mbed-dev/drivers/Timer.cpp@12:9a20164dcc47, 2017-01-11 (annotated)

Committer:
vipinranka
Date:
Wed Jan 11 11:41:30 2017 +0000
Revision:
12:9a20164dcc47
This is the final version MGAS Project for Renesas GR Peach Design Contest

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vipinranka 12:9a20164dcc47 1 /* mbed Microcontroller Library
vipinranka 12:9a20164dcc47 2 * Copyright (c) 2006-2013 ARM Limited
vipinranka 12:9a20164dcc47 3 *
vipinranka 12:9a20164dcc47 4 * Licensed under the Apache License, Version 2.0 (the "License");
vipinranka 12:9a20164dcc47 5 * you may not use this file except in compliance with the License.
vipinranka 12:9a20164dcc47 6 * You may obtain a copy of the License at
vipinranka 12:9a20164dcc47 7 *
vipinranka 12:9a20164dcc47 8 * http://www.apache.org/licenses/LICENSE-2.0
vipinranka 12:9a20164dcc47 9 *
vipinranka 12:9a20164dcc47 10 * Unless required by applicable law or agreed to in writing, software
vipinranka 12:9a20164dcc47 11 * distributed under the License is distributed on an "AS IS" BASIS,
vipinranka 12:9a20164dcc47 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vipinranka 12:9a20164dcc47 13 * See the License for the specific language governing permissions and
vipinranka 12:9a20164dcc47 14 * limitations under the License.
vipinranka 12:9a20164dcc47 15 */
vipinranka 12:9a20164dcc47 16 #include "drivers/Timer.h"
vipinranka 12:9a20164dcc47 17 #include "hal/ticker_api.h"
vipinranka 12:9a20164dcc47 18 #include "hal/us_ticker_api.h"
vipinranka 12:9a20164dcc47 19 #include "platform/critical.h"
vipinranka 12:9a20164dcc47 20
vipinranka 12:9a20164dcc47 21 namespace mbed {
vipinranka 12:9a20164dcc47 22
vipinranka 12:9a20164dcc47 23 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
vipinranka 12:9a20164dcc47 24 reset();
vipinranka 12:9a20164dcc47 25 }
vipinranka 12:9a20164dcc47 26
vipinranka 12:9a20164dcc47 27 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
vipinranka 12:9a20164dcc47 28 reset();
vipinranka 12:9a20164dcc47 29 }
vipinranka 12:9a20164dcc47 30
vipinranka 12:9a20164dcc47 31 void Timer::start() {
vipinranka 12:9a20164dcc47 32 core_util_critical_section_enter();
vipinranka 12:9a20164dcc47 33 if (!_running) {
vipinranka 12:9a20164dcc47 34 _start = ticker_read(_ticker_data);
vipinranka 12:9a20164dcc47 35 _running = 1;
vipinranka 12:9a20164dcc47 36 }
vipinranka 12:9a20164dcc47 37 core_util_critical_section_exit();
vipinranka 12:9a20164dcc47 38 }
vipinranka 12:9a20164dcc47 39
vipinranka 12:9a20164dcc47 40 void Timer::stop() {
vipinranka 12:9a20164dcc47 41 core_util_critical_section_enter();
vipinranka 12:9a20164dcc47 42 _time += slicetime();
vipinranka 12:9a20164dcc47 43 _running = 0;
vipinranka 12:9a20164dcc47 44 core_util_critical_section_exit();
vipinranka 12:9a20164dcc47 45 }
vipinranka 12:9a20164dcc47 46
vipinranka 12:9a20164dcc47 47 int Timer::read_us() {
vipinranka 12:9a20164dcc47 48 core_util_critical_section_enter();
vipinranka 12:9a20164dcc47 49 int time = _time + slicetime();
vipinranka 12:9a20164dcc47 50 core_util_critical_section_exit();
vipinranka 12:9a20164dcc47 51 return time;
vipinranka 12:9a20164dcc47 52 }
vipinranka 12:9a20164dcc47 53
vipinranka 12:9a20164dcc47 54 float Timer::read() {
vipinranka 12:9a20164dcc47 55 return (float)read_us() / 1000000.0f;
vipinranka 12:9a20164dcc47 56 }
vipinranka 12:9a20164dcc47 57
vipinranka 12:9a20164dcc47 58 int Timer::read_ms() {
vipinranka 12:9a20164dcc47 59 return read_us() / 1000;
vipinranka 12:9a20164dcc47 60 }
vipinranka 12:9a20164dcc47 61
vipinranka 12:9a20164dcc47 62 int Timer::slicetime() {
vipinranka 12:9a20164dcc47 63 core_util_critical_section_enter();
vipinranka 12:9a20164dcc47 64 int ret = 0;
vipinranka 12:9a20164dcc47 65 if (_running) {
vipinranka 12:9a20164dcc47 66 ret = ticker_read(_ticker_data) - _start;
vipinranka 12:9a20164dcc47 67 }
vipinranka 12:9a20164dcc47 68 core_util_critical_section_exit();
vipinranka 12:9a20164dcc47 69 return ret;
vipinranka 12:9a20164dcc47 70 }
vipinranka 12:9a20164dcc47 71
vipinranka 12:9a20164dcc47 72 void Timer::reset() {
vipinranka 12:9a20164dcc47 73 core_util_critical_section_enter();
vipinranka 12:9a20164dcc47 74 _start = ticker_read(_ticker_data);
vipinranka 12:9a20164dcc47 75 _time = 0;
vipinranka 12:9a20164dcc47 76 core_util_critical_section_exit();
vipinranka 12:9a20164dcc47 77 }
vipinranka 12:9a20164dcc47 78
vipinranka 12:9a20164dcc47 79 Timer::operator float() {
vipinranka 12:9a20164dcc47 80 return read();
vipinranka 12:9a20164dcc47 81 }
vipinranka 12:9a20164dcc47 82
vipinranka 12:9a20164dcc47 83 } // namespace mbed