MBED-DEV only fro Nucleo STM32F303K8T6
Fork of mbed-dev by
targets/TARGET_STM/TARGET_STM32F3/us_ticker.c@151:acf04f8e7d03, 2016-11-19 (annotated)
- Committer:
- pravinautosys
- Date:
- Sat Nov 19 10:38:54 2016 +0000
- Revision:
- 151:acf04f8e7d03
- Parent:
- 149:156823d33999
MyMBED-DEVWithSTM32F303K8T6;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2014, STMicroelectronics |
<> | 144:ef7eb2e8f9f7 | 3 | * All rights reserved. |
<> | 144:ef7eb2e8f9f7 | 4 | * |
<> | 144:ef7eb2e8f9f7 | 5 | * Redistribution and use in source and binary forms, with or without |
<> | 144:ef7eb2e8f9f7 | 6 | * modification, are permitted provided that the following conditions are met: |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 9 | * this list of conditions and the following disclaimer. |
<> | 144:ef7eb2e8f9f7 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 11 | * this list of conditions and the following disclaimer in the documentation |
<> | 144:ef7eb2e8f9f7 | 12 | * and/or other materials provided with the distribution. |
<> | 144:ef7eb2e8f9f7 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 144:ef7eb2e8f9f7 | 14 | * may be used to endorse or promote products derived from this software |
<> | 144:ef7eb2e8f9f7 | 15 | * without specific prior written permission. |
<> | 144:ef7eb2e8f9f7 | 16 | * |
<> | 144:ef7eb2e8f9f7 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 144:ef7eb2e8f9f7 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 144:ef7eb2e8f9f7 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 144:ef7eb2e8f9f7 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 144:ef7eb2e8f9f7 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 144:ef7eb2e8f9f7 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 144:ef7eb2e8f9f7 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 144:ef7eb2e8f9f7 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 144:ef7eb2e8f9f7 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 144:ef7eb2e8f9f7 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 144:ef7eb2e8f9f7 | 27 | */ |
<> | 144:ef7eb2e8f9f7 | 28 | #include <stddef.h> |
<> | 144:ef7eb2e8f9f7 | 29 | #include "us_ticker_api.h" |
<> | 144:ef7eb2e8f9f7 | 30 | #include "PeripheralNames.h" |
<> | 144:ef7eb2e8f9f7 | 31 | |
<> | 144:ef7eb2e8f9f7 | 32 | // 32-bit timer selection |
<> | 144:ef7eb2e8f9f7 | 33 | #define TIM_MST TIM2 |
<> | 144:ef7eb2e8f9f7 | 34 | |
<> | 144:ef7eb2e8f9f7 | 35 | static TIM_HandleTypeDef TimMasterHandle; |
<> | 144:ef7eb2e8f9f7 | 36 | static int us_ticker_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 37 | |
<> | 144:ef7eb2e8f9f7 | 38 | void us_ticker_init(void) |
<> | 144:ef7eb2e8f9f7 | 39 | { |
<> | 144:ef7eb2e8f9f7 | 40 | if (us_ticker_inited) return; |
<> | 144:ef7eb2e8f9f7 | 41 | us_ticker_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 42 | |
<> | 144:ef7eb2e8f9f7 | 43 | TimMasterHandle.Instance = TIM_MST; |
<> | 144:ef7eb2e8f9f7 | 44 | |
<> | 144:ef7eb2e8f9f7 | 45 | HAL_InitTick(0); // The passed value is not used |
<> | 144:ef7eb2e8f9f7 | 46 | } |
<> | 144:ef7eb2e8f9f7 | 47 | |
<> | 144:ef7eb2e8f9f7 | 48 | uint32_t us_ticker_read() |
<> | 144:ef7eb2e8f9f7 | 49 | { |
<> | 144:ef7eb2e8f9f7 | 50 | if (!us_ticker_inited) us_ticker_init(); |
<> | 144:ef7eb2e8f9f7 | 51 | return TIM_MST->CNT; |
<> | 144:ef7eb2e8f9f7 | 52 | } |
<> | 144:ef7eb2e8f9f7 | 53 | |
<> | 144:ef7eb2e8f9f7 | 54 | void us_ticker_set_interrupt(timestamp_t timestamp) |
<> | 144:ef7eb2e8f9f7 | 55 | { |
<> | 144:ef7eb2e8f9f7 | 56 | // Set new output compare value |
<> | 144:ef7eb2e8f9f7 | 57 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); |
<> | 144:ef7eb2e8f9f7 | 58 | // Enable IT |
<> | 144:ef7eb2e8f9f7 | 59 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 60 | } |
<> | 144:ef7eb2e8f9f7 | 61 | |
<> | 144:ef7eb2e8f9f7 | 62 | void us_ticker_disable_interrupt(void) |
<> | 144:ef7eb2e8f9f7 | 63 | { |
<> | 144:ef7eb2e8f9f7 | 64 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 65 | } |
<> | 144:ef7eb2e8f9f7 | 66 | |
<> | 144:ef7eb2e8f9f7 | 67 | void us_ticker_clear_interrupt(void) |
<> | 144:ef7eb2e8f9f7 | 68 | { |
<> | 144:ef7eb2e8f9f7 | 69 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
<> | 144:ef7eb2e8f9f7 | 70 | } |