Greg Steiert / pegasus_dev

Development mbed library for MAX32630FTHR

Dependents:   blinky_max32630fthr

drivers/Timer.cpp@3:1198227e6421, 2016-12-16 (annotated)

Committer:
switches
Date:
Fri Dec 16 16:27:57 2016 +0000
Revision:
3:1198227e6421
Parent:
0:5c4d7b2438d3 
Changed ADC scale for MAX32625 platforms to 1.2V full scale to match MAX32630 platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
switches 0:5c4d7b2438d3 1 /* mbed Microcontroller Library
switches 0:5c4d7b2438d3 2 * Copyright (c) 2006-2013 ARM Limited
switches 0:5c4d7b2438d3 3 *
switches 0:5c4d7b2438d3 4 * Licensed under the Apache License, Version 2.0 (the "License");
switches 0:5c4d7b2438d3 5 * you may not use this file except in compliance with the License.
switches 0:5c4d7b2438d3 6 * You may obtain a copy of the License at
switches 0:5c4d7b2438d3 7 *
switches 0:5c4d7b2438d3 8 * http://www.apache.org/licenses/LICENSE-2.0
switches 0:5c4d7b2438d3 9 *
switches 0:5c4d7b2438d3 10 * Unless required by applicable law or agreed to in writing, software
switches 0:5c4d7b2438d3 11 * distributed under the License is distributed on an "AS IS" BASIS,
switches 0:5c4d7b2438d3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
switches 0:5c4d7b2438d3 13 * See the License for the specific language governing permissions and
switches 0:5c4d7b2438d3 14 * limitations under the License.
switches 0:5c4d7b2438d3 15 */
switches 0:5c4d7b2438d3 16 #include "drivers/Timer.h"
switches 0:5c4d7b2438d3 17 #include "hal/ticker_api.h"
switches 0:5c4d7b2438d3 18 #include "hal/us_ticker_api.h"
switches 0:5c4d7b2438d3 19 #include "platform/critical.h"
switches 0:5c4d7b2438d3 20
switches 0:5c4d7b2438d3 21 namespace mbed {
switches 0:5c4d7b2438d3 22
switches 0:5c4d7b2438d3 23 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
switches 0:5c4d7b2438d3 24 reset();
switches 0:5c4d7b2438d3 25 }
switches 0:5c4d7b2438d3 26
switches 0:5c4d7b2438d3 27 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
switches 0:5c4d7b2438d3 28 reset();
switches 0:5c4d7b2438d3 29 }
switches 0:5c4d7b2438d3 30
switches 0:5c4d7b2438d3 31 void Timer::start() {
switches 0:5c4d7b2438d3 32 core_util_critical_section_enter();
switches 0:5c4d7b2438d3 33 if (!_running) {
switches 0:5c4d7b2438d3 34 _start = ticker_read(_ticker_data);
switches 0:5c4d7b2438d3 35 _running = 1;
switches 0:5c4d7b2438d3 36 }
switches 0:5c4d7b2438d3 37 core_util_critical_section_exit();
switches 0:5c4d7b2438d3 38 }
switches 0:5c4d7b2438d3 39
switches 0:5c4d7b2438d3 40 void Timer::stop() {
switches 0:5c4d7b2438d3 41 core_util_critical_section_enter();
switches 0:5c4d7b2438d3 42 _time += slicetime();
switches 0:5c4d7b2438d3 43 _running = 0;
switches 0:5c4d7b2438d3 44 core_util_critical_section_exit();
switches 0:5c4d7b2438d3 45 }
switches 0:5c4d7b2438d3 46
switches 0:5c4d7b2438d3 47 int Timer::read_us() {
switches 0:5c4d7b2438d3 48 core_util_critical_section_enter();
switches 0:5c4d7b2438d3 49 int time = _time + slicetime();
switches 0:5c4d7b2438d3 50 core_util_critical_section_exit();
switches 0:5c4d7b2438d3 51 return time;
switches 0:5c4d7b2438d3 52 }
switches 0:5c4d7b2438d3 53
switches 0:5c4d7b2438d3 54 float Timer::read() {
switches 0:5c4d7b2438d3 55 return (float)read_us() / 1000000.0f;
switches 0:5c4d7b2438d3 56 }
switches 0:5c4d7b2438d3 57
switches 0:5c4d7b2438d3 58 int Timer::read_ms() {
switches 0:5c4d7b2438d3 59 return read_us() / 1000;
switches 0:5c4d7b2438d3 60 }
switches 0:5c4d7b2438d3 61
switches 0:5c4d7b2438d3 62 int Timer::slicetime() {
switches 0:5c4d7b2438d3 63 core_util_critical_section_enter();
switches 0:5c4d7b2438d3 64 int ret = 0;
switches 0:5c4d7b2438d3 65 if (_running) {
switches 0:5c4d7b2438d3 66 ret = ticker_read(_ticker_data) - _start;
switches 0:5c4d7b2438d3 67 }
switches 0:5c4d7b2438d3 68 core_util_critical_section_exit();
switches 0:5c4d7b2438d3 69 return ret;
switches 0:5c4d7b2438d3 70 }
switches 0:5c4d7b2438d3 71
switches 0:5c4d7b2438d3 72 void Timer::reset() {
switches 0:5c4d7b2438d3 73 core_util_critical_section_enter();
switches 0:5c4d7b2438d3 74 _start = ticker_read(_ticker_data);
switches 0:5c4d7b2438d3 75 _time = 0;
switches 0:5c4d7b2438d3 76 core_util_critical_section_exit();
switches 0:5c4d7b2438d3 77 }
switches 0:5c4d7b2438d3 78
switches 0:5c4d7b2438d3 79 Timer::operator float() {
switches 0:5c4d7b2438d3 80 return read();
switches 0:5c4d7b2438d3 81 }
switches 0:5c4d7b2438d3 82
switches 0:5c4d7b2438d3 83 } // namespace mbed