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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

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

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/us_ticker.c@440:8a0b45cd594f, 2014-12-16 (annotated)

Committer:
mbed_official
Date:
Tue Dec 16 08:15:08 2014 +0000
Revision:
440:8a0b45cd594f
Parent:
431:255afbe6270c 
Synchronized with git revision 67fbbf0b635d0c0d93fbe433306c537c2ad206aa



Full URL: https://github.com/mbedmicro/mbed/commit/67fbbf0b635d0c0d93fbe433306c537c2ad206aa/



Targets: nrf51 - updating app_timer.c from Norid'c SDKv7.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 3 * All rights reserved.
mbed_official 219:993c9b0acbcc 4 *
mbed_official 219:993c9b0acbcc 5 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 6 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 7 *
mbed_official 219:993c9b0acbcc 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 9 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 12 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 14 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 15 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 16 *
mbed_official 219:993c9b0acbcc 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 27 */
mbed_official 219:993c9b0acbcc 28 #include <stddef.h>
mbed_official 219:993c9b0acbcc 29 #include "us_ticker_api.h"
mbed_official 219:993c9b0acbcc 30 #include "PeripheralNames.h"
mbed_official 219:993c9b0acbcc 31
mbed_official 219:993c9b0acbcc 32 // 32-bit timer selection
mbed_official 431:255afbe6270c 33 #define TIM_MST TIM2
mbed_official 219:993c9b0acbcc 34
mbed_official 219:993c9b0acbcc 35 static TIM_HandleTypeDef TimMasterHandle;
mbed_official 219:993c9b0acbcc 36 static int us_ticker_inited = 0;
mbed_official 219:993c9b0acbcc 37
mbed_official 402:09075a3b15e3 38 void us_ticker_init(void)
mbed_official 402:09075a3b15e3 39 {
mbed_official 219:993c9b0acbcc 40 if (us_ticker_inited) return;
mbed_official 219:993c9b0acbcc 41 us_ticker_inited = 1;
mbed_official 219:993c9b0acbcc 42
mbed_official 431:255afbe6270c 43 TimMasterHandle.Instance = TIM_MST;
mbed_official 219:993c9b0acbcc 44
mbed_official 431:255afbe6270c 45 HAL_InitTick(0); // The passed value is not used
mbed_official 219:993c9b0acbcc 46 }
mbed_official 219:993c9b0acbcc 47
mbed_official 402:09075a3b15e3 48 uint32_t us_ticker_read()
mbed_official 402:09075a3b15e3 49 {
mbed_official 219:993c9b0acbcc 50 if (!us_ticker_inited) us_ticker_init();
mbed_official 219:993c9b0acbcc 51 return TIM_MST->CNT;
mbed_official 219:993c9b0acbcc 52 }
mbed_official 219:993c9b0acbcc 53
mbed_official 402:09075a3b15e3 54 void us_ticker_set_interrupt(timestamp_t timestamp)
mbed_official 402:09075a3b15e3 55 {
mbed_official 219:993c9b0acbcc 56 // Set new output compare value
mbed_official 304:89b9c3a9a045 57 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
mbed_official 219:993c9b0acbcc 58 // Enable IT
mbed_official 219:993c9b0acbcc 59 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 219:993c9b0acbcc 60 }
mbed_official 219:993c9b0acbcc 61
mbed_official 402:09075a3b15e3 62 void us_ticker_disable_interrupt(void)
mbed_official 402:09075a3b15e3 63 {
mbed_official 219:993c9b0acbcc 64 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 219:993c9b0acbcc 65 }
mbed_official 219:993c9b0acbcc 66
mbed_official 402:09075a3b15e3 67 void us_ticker_clear_interrupt(void)
mbed_official 402:09075a3b15e3 68 {
mbed_official 219:993c9b0acbcc 69 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 219:993c9b0acbcc 70 }