PHung Tung / DISCO-F746_WAV_PLAYER

SPKT

Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

SRC_STM32F7/targets/hal/TARGET_STM/TARGET_STM32F7/us_ticker.c@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
SPKT

Who changed what in which revision?

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phungductung 0:8ede47d38d10 1 /* mbed Microcontroller Library
phungductung 0:8ede47d38d10 2 * Copyright (c) 2015, STMicroelectronics
phungductung 0:8ede47d38d10 3 * All rights reserved.
phungductung 0:8ede47d38d10 4 *
phungductung 0:8ede47d38d10 5 * Redistribution and use in source and binary forms, with or without
phungductung 0:8ede47d38d10 6 * modification, are permitted provided that the following conditions are met:
phungductung 0:8ede47d38d10 7 *
phungductung 0:8ede47d38d10 8 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:8ede47d38d10 9 * this list of conditions and the following disclaimer.
phungductung 0:8ede47d38d10 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:8ede47d38d10 11 * this list of conditions and the following disclaimer in the documentation
phungductung 0:8ede47d38d10 12 * and/or other materials provided with the distribution.
phungductung 0:8ede47d38d10 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:8ede47d38d10 14 * may be used to endorse or promote products derived from this software
phungductung 0:8ede47d38d10 15 * without specific prior written permission.
phungductung 0:8ede47d38d10 16 *
phungductung 0:8ede47d38d10 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:8ede47d38d10 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:8ede47d38d10 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:8ede47d38d10 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:8ede47d38d10 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:8ede47d38d10 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:8ede47d38d10 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:8ede47d38d10 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:8ede47d38d10 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:8ede47d38d10 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:8ede47d38d10 27 */
phungductung 0:8ede47d38d10 28 #include <stddef.h>
phungductung 0:8ede47d38d10 29 #include "us_ticker_api.h"
phungductung 0:8ede47d38d10 30 #include "PeripheralNames.h"
phungductung 0:8ede47d38d10 31 #include "hal_tick.h"
phungductung 0:8ede47d38d10 32
phungductung 0:8ede47d38d10 33 #define TIM_MST TIM5
phungductung 0:8ede47d38d10 34
phungductung 0:8ede47d38d10 35 static TIM_HandleTypeDef TimMasterHandle;
phungductung 0:8ede47d38d10 36 static int us_ticker_inited = 0;
phungductung 0:8ede47d38d10 37
phungductung 0:8ede47d38d10 38 void us_ticker_init(void)
phungductung 0:8ede47d38d10 39 {
phungductung 0:8ede47d38d10 40 if (us_ticker_inited) return;
phungductung 0:8ede47d38d10 41 us_ticker_inited = 1;
phungductung 0:8ede47d38d10 42
phungductung 0:8ede47d38d10 43 TimMasterHandle.Instance = TIM_MST;
phungductung 0:8ede47d38d10 44
phungductung 0:8ede47d38d10 45 HAL_InitTick(0); // The passed value is not used
phungductung 0:8ede47d38d10 46 }
phungductung 0:8ede47d38d10 47
phungductung 0:8ede47d38d10 48 uint32_t us_ticker_read()
phungductung 0:8ede47d38d10 49 {
phungductung 0:8ede47d38d10 50 if (!us_ticker_inited) us_ticker_init();
phungductung 0:8ede47d38d10 51 return TIM_MST->CNT;
phungductung 0:8ede47d38d10 52 }
phungductung 0:8ede47d38d10 53
phungductung 0:8ede47d38d10 54 void us_ticker_set_interrupt(timestamp_t timestamp)
phungductung 0:8ede47d38d10 55 {
phungductung 0:8ede47d38d10 56 // Set new output compare value
phungductung 0:8ede47d38d10 57 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
phungductung 0:8ede47d38d10 58 // Enable IT
phungductung 0:8ede47d38d10 59 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
phungductung 0:8ede47d38d10 60 }
phungductung 0:8ede47d38d10 61
phungductung 0:8ede47d38d10 62 void us_ticker_disable_interrupt(void)
phungductung 0:8ede47d38d10 63 {
phungductung 0:8ede47d38d10 64 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
phungductung 0:8ede47d38d10 65 }
phungductung 0:8ede47d38d10 66
phungductung 0:8ede47d38d10 67 void us_ticker_clear_interrupt(void)
phungductung 0:8ede47d38d10 68 {
phungductung 0:8ede47d38d10 69 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
phungductung 0:8ede47d38d10 70 }