mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

drivers/Timer.h@134:ad3be0349dc5, 2017-01-16 (annotated)

Committer:
<>
Date:
Mon Jan 16 12:05:23 2017 +0000
Revision:
134:ad3be0349dc5
Parent:
128:9bcdf88f62b0
Child:
145:64910690c574
Release 134 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3488: Dev stm i2c v2 unitary functions https://github.com/ARMmbed/mbed-os/pull/3488

3492: Fix #3463 CAN read() return value https://github.com/ARMmbed/mbed-os/pull/3492

3503: [LPC15xx] Ensure that PWM=1 is resolved correctly https://github.com/ARMmbed/mbed-os/pull/3503

3504: [LPC15xx] CAN implementation improvements https://github.com/ARMmbed/mbed-os/pull/3504

3539: NUCLEO_F412ZG - Add support of TRNG peripheral https://github.com/ARMmbed/mbed-os/pull/3539

3540: STM: SPI: Initialize Rx in spi_master_write https://github.com/ARMmbed/mbed-os/pull/3540

3438: K64F: Add support for SERIAL ASYNCH API https://github.com/ARMmbed/mbed-os/pull/3438

3519: MCUXpresso: Fix ENET driver to enable interrupts after interrupt handler is set https://github.com/ARMmbed/mbed-os/pull/3519

3544: STM32L4 deepsleep improvement https://github.com/ARMmbed/mbed-os/pull/3544

3546: NUCLEO-F412ZG - Add CAN peripheral https://github.com/ARMmbed/mbed-os/pull/3546

3551: Fix I2C driver for RZ/A1H https://github.com/ARMmbed/mbed-os/pull/3551

3558: K64F UART Asynch API: Fix synchronization issue https://github.com/ARMmbed/mbed-os/pull/3558

3563: LPC4088 - Fix vector checksum https://github.com/ARMmbed/mbed-os/pull/3563

3567: Dev stm32 F0 v1.7.0 https://github.com/ARMmbed/mbed-os/pull/3567

3577: Fixes linking errors when building with debug profile https://github.com/ARMmbed/mbed-os/pull/3577

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 128:9bcdf88f62b0 1 /* mbed Microcontroller Library
<> 128:9bcdf88f62b0 2 * Copyright (c) 2006-2013 ARM Limited
<> 128:9bcdf88f62b0 3 *
<> 128:9bcdf88f62b0 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 128:9bcdf88f62b0 5 * you may not use this file except in compliance with the License.
<> 128:9bcdf88f62b0 6 * You may obtain a copy of the License at
<> 128:9bcdf88f62b0 7 *
<> 128:9bcdf88f62b0 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 128:9bcdf88f62b0 9 *
<> 128:9bcdf88f62b0 10 * Unless required by applicable law or agreed to in writing, software
<> 128:9bcdf88f62b0 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 128:9bcdf88f62b0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 128:9bcdf88f62b0 13 * See the License for the specific language governing permissions and
<> 128:9bcdf88f62b0 14 * limitations under the License.
<> 128:9bcdf88f62b0 15 */
<> 128:9bcdf88f62b0 16 #ifndef MBED_TIMER_H
<> 128:9bcdf88f62b0 17 #define MBED_TIMER_H
<> 128:9bcdf88f62b0 18
<> 128:9bcdf88f62b0 19 #include "platform/platform.h"
<> 128:9bcdf88f62b0 20 #include "hal/ticker_api.h"
<> 128:9bcdf88f62b0 21
<> 128:9bcdf88f62b0 22 namespace mbed {
<> 128:9bcdf88f62b0 23 /** \addtogroup drivers */
<> 128:9bcdf88f62b0 24 /** @{*/
<> 128:9bcdf88f62b0 25
<> 128:9bcdf88f62b0 26 /** A general purpose timer
<> 128:9bcdf88f62b0 27 *
<> 128:9bcdf88f62b0 28 * @Note Synchronization level: Interrupt safe
<> 128:9bcdf88f62b0 29 *
<> 128:9bcdf88f62b0 30 * Example:
<> 128:9bcdf88f62b0 31 * @code
<> 128:9bcdf88f62b0 32 * // Count the time to toggle a LED
<> 128:9bcdf88f62b0 33 *
<> 128:9bcdf88f62b0 34 * #include "mbed.h"
<> 128:9bcdf88f62b0 35 *
<> 128:9bcdf88f62b0 36 * Timer timer;
<> 128:9bcdf88f62b0 37 * DigitalOut led(LED1);
<> 128:9bcdf88f62b0 38 * int begin, end;
<> 128:9bcdf88f62b0 39 *
<> 128:9bcdf88f62b0 40 * int main() {
<> 128:9bcdf88f62b0 41 * timer.start();
<> 128:9bcdf88f62b0 42 * begin = timer.read_us();
<> 128:9bcdf88f62b0 43 * led = !led;
<> 128:9bcdf88f62b0 44 * end = timer.read_us();
<> 128:9bcdf88f62b0 45 * printf("Toggle the led takes %d us", end - begin);
<> 128:9bcdf88f62b0 46 * }
<> 128:9bcdf88f62b0 47 * @endcode
<> 128:9bcdf88f62b0 48 */
<> 128:9bcdf88f62b0 49 class Timer {
<> 128:9bcdf88f62b0 50
<> 128:9bcdf88f62b0 51 public:
<> 128:9bcdf88f62b0 52 Timer();
<> 128:9bcdf88f62b0 53 Timer(const ticker_data_t *data);
<> 128:9bcdf88f62b0 54
<> 128:9bcdf88f62b0 55 /** Start the timer
<> 128:9bcdf88f62b0 56 */
<> 128:9bcdf88f62b0 57 void start();
<> 128:9bcdf88f62b0 58
<> 128:9bcdf88f62b0 59 /** Stop the timer
<> 128:9bcdf88f62b0 60 */
<> 128:9bcdf88f62b0 61 void stop();
<> 128:9bcdf88f62b0 62
<> 128:9bcdf88f62b0 63 /** Reset the timer to 0.
<> 128:9bcdf88f62b0 64 *
<> 128:9bcdf88f62b0 65 * If it was already counting, it will continue
<> 128:9bcdf88f62b0 66 */
<> 128:9bcdf88f62b0 67 void reset();
<> 128:9bcdf88f62b0 68
<> 128:9bcdf88f62b0 69 /** Get the time passed in seconds
<> 128:9bcdf88f62b0 70 */
<> 128:9bcdf88f62b0 71 float read();
<> 128:9bcdf88f62b0 72
<> 128:9bcdf88f62b0 73 /** Get the time passed in mili-seconds
<> 128:9bcdf88f62b0 74 */
<> 128:9bcdf88f62b0 75 int read_ms();
<> 128:9bcdf88f62b0 76
<> 128:9bcdf88f62b0 77 /** Get the time passed in micro-seconds
<> 128:9bcdf88f62b0 78 */
<> 128:9bcdf88f62b0 79 int read_us();
<> 128:9bcdf88f62b0 80
<> 128:9bcdf88f62b0 81 /** An operator shorthand for read()
<> 128:9bcdf88f62b0 82 */
<> 128:9bcdf88f62b0 83 operator float();
<> 128:9bcdf88f62b0 84
<> 128:9bcdf88f62b0 85 protected:
<> 128:9bcdf88f62b0 86 int slicetime();
<> 128:9bcdf88f62b0 87 int _running; // whether the timer is running
<> 128:9bcdf88f62b0 88 unsigned int _start; // the start time of the latest slice
<> 128:9bcdf88f62b0 89 int _time; // any accumulated time from previous slices
<> 128:9bcdf88f62b0 90 const ticker_data_t *_ticker_data;
<> 128:9bcdf88f62b0 91 };
<> 128:9bcdf88f62b0 92
<> 128:9bcdf88f62b0 93 } // namespace mbed
<> 128:9bcdf88f62b0 94
<> 128:9bcdf88f62b0 95 #endif
<> 128:9bcdf88f62b0 96
<> 128:9bcdf88f62b0 97 /** @}*/