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Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_MTS_MDOT_F405RG/us_ticker.c@400:7fa56b1b9d45, 2014-11-13 (annotated)

Committer:
mbed_official
Date:
Thu Nov 13 08:30:07 2014 +0000
Revision:
400:7fa56b1b9d45
Synchronized with git revision 08c85ef1361a8a0c66ab4c27be8f4fd9f032a14c



Full URL: https://github.com/mbedmicro/mbed/commit/08c85ef1361a8a0c66ab4c27be8f4fd9f032a14c/



Platform: Add support for MultiTech mDot module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 400:7fa56b1b9d45 1 /* mbed Microcontroller Library
mbed_official 400:7fa56b1b9d45 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 400:7fa56b1b9d45 3 * All rights reserved.
mbed_official 400:7fa56b1b9d45 4 *
mbed_official 400:7fa56b1b9d45 5 * Redistribution and use in source and binary forms, with or without
mbed_official 400:7fa56b1b9d45 6 * modification, are permitted provided that the following conditions are met:
mbed_official 400:7fa56b1b9d45 7 *
mbed_official 400:7fa56b1b9d45 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 400:7fa56b1b9d45 9 * this list of conditions and the following disclaimer.
mbed_official 400:7fa56b1b9d45 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 400:7fa56b1b9d45 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 400:7fa56b1b9d45 12 * and/or other materials provided with the distribution.
mbed_official 400:7fa56b1b9d45 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 400:7fa56b1b9d45 14 * may be used to endorse or promote products derived from this software
mbed_official 400:7fa56b1b9d45 15 * without specific prior written permission.
mbed_official 400:7fa56b1b9d45 16 *
mbed_official 400:7fa56b1b9d45 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 400:7fa56b1b9d45 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 400:7fa56b1b9d45 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 400:7fa56b1b9d45 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 400:7fa56b1b9d45 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 400:7fa56b1b9d45 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 400:7fa56b1b9d45 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 400:7fa56b1b9d45 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 400:7fa56b1b9d45 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 400:7fa56b1b9d45 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 400:7fa56b1b9d45 27 */
mbed_official 400:7fa56b1b9d45 28 #include <stddef.h>
mbed_official 400:7fa56b1b9d45 29 #include "us_ticker_api.h"
mbed_official 400:7fa56b1b9d45 30 #include "PeripheralNames.h"
mbed_official 400:7fa56b1b9d45 31
mbed_official 400:7fa56b1b9d45 32 #define TIM_MST TIM5
mbed_official 400:7fa56b1b9d45 33
mbed_official 400:7fa56b1b9d45 34 static TIM_HandleTypeDef TimMasterHandle;
mbed_official 400:7fa56b1b9d45 35 static int us_ticker_inited = 0;
mbed_official 400:7fa56b1b9d45 36
mbed_official 400:7fa56b1b9d45 37 void us_ticker_init(void) {
mbed_official 400:7fa56b1b9d45 38 if (us_ticker_inited) return;
mbed_official 400:7fa56b1b9d45 39 us_ticker_inited = 1;
mbed_official 400:7fa56b1b9d45 40
mbed_official 400:7fa56b1b9d45 41 TimMasterHandle.Instance = TIM_MST;
mbed_official 400:7fa56b1b9d45 42
mbed_official 400:7fa56b1b9d45 43 HAL_InitTick(0); // The passed value is not used
mbed_official 400:7fa56b1b9d45 44 }
mbed_official 400:7fa56b1b9d45 45
mbed_official 400:7fa56b1b9d45 46 uint32_t us_ticker_read() {
mbed_official 400:7fa56b1b9d45 47 if (!us_ticker_inited) us_ticker_init();
mbed_official 400:7fa56b1b9d45 48 return TIM_MST->CNT;
mbed_official 400:7fa56b1b9d45 49 }
mbed_official 400:7fa56b1b9d45 50
mbed_official 400:7fa56b1b9d45 51 void us_ticker_set_interrupt(timestamp_t timestamp) {
mbed_official 400:7fa56b1b9d45 52 // Set new output compare value
mbed_official 400:7fa56b1b9d45 53 __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
mbed_official 400:7fa56b1b9d45 54 // Enable IT
mbed_official 400:7fa56b1b9d45 55 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 400:7fa56b1b9d45 56 }
mbed_official 400:7fa56b1b9d45 57
mbed_official 400:7fa56b1b9d45 58 void us_ticker_disable_interrupt(void) {
mbed_official 400:7fa56b1b9d45 59 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 400:7fa56b1b9d45 60 }
mbed_official 400:7fa56b1b9d45 61
mbed_official 400:7fa56b1b9d45 62 void us_ticker_clear_interrupt(void) {
mbed_official 400:7fa56b1b9d45 63 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
mbed_official 400:7fa56b1b9d45 64 }