mbed library sources
Dependents: FRDM-KL46Z_LCD_Test FRDM-KL46Z_LCD_Test FRDM-KL46Z_Plantilla FRDM-KL46Z_Plantilla ... more
targets/hal/TARGET_STM/TARGET_STM32F407VG/us_ticker.c@0:6bc4ac881c8e, 2016-07-28 (annotated)
- Committer:
- ebrus
- Date:
- Thu Jul 28 15:56:34 2016 +0000
- Revision:
- 0:6bc4ac881c8e
1;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ebrus | 0:6bc4ac881c8e | 1 | /* mbed Microcontroller Library |
ebrus | 0:6bc4ac881c8e | 2 | * Copyright (c) 2014, STMicroelectronics |
ebrus | 0:6bc4ac881c8e | 3 | * All rights reserved. |
ebrus | 0:6bc4ac881c8e | 4 | * |
ebrus | 0:6bc4ac881c8e | 5 | * Redistribution and use in source and binary forms, with or without |
ebrus | 0:6bc4ac881c8e | 6 | * modification, are permitted provided that the following conditions are met: |
ebrus | 0:6bc4ac881c8e | 7 | * |
ebrus | 0:6bc4ac881c8e | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
ebrus | 0:6bc4ac881c8e | 9 | * this list of conditions and the following disclaimer. |
ebrus | 0:6bc4ac881c8e | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
ebrus | 0:6bc4ac881c8e | 11 | * this list of conditions and the following disclaimer in the documentation |
ebrus | 0:6bc4ac881c8e | 12 | * and/or other materials provided with the distribution. |
ebrus | 0:6bc4ac881c8e | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
ebrus | 0:6bc4ac881c8e | 14 | * may be used to endorse or promote products derived from this software |
ebrus | 0:6bc4ac881c8e | 15 | * without specific prior written permission. |
ebrus | 0:6bc4ac881c8e | 16 | * |
ebrus | 0:6bc4ac881c8e | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
ebrus | 0:6bc4ac881c8e | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
ebrus | 0:6bc4ac881c8e | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
ebrus | 0:6bc4ac881c8e | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
ebrus | 0:6bc4ac881c8e | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
ebrus | 0:6bc4ac881c8e | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
ebrus | 0:6bc4ac881c8e | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
ebrus | 0:6bc4ac881c8e | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
ebrus | 0:6bc4ac881c8e | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
ebrus | 0:6bc4ac881c8e | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
ebrus | 0:6bc4ac881c8e | 27 | */ |
ebrus | 0:6bc4ac881c8e | 28 | #include <stddef.h> |
ebrus | 0:6bc4ac881c8e | 29 | #include "us_ticker_api.h" |
ebrus | 0:6bc4ac881c8e | 30 | #include "PeripheralNames.h" |
ebrus | 0:6bc4ac881c8e | 31 | |
ebrus | 0:6bc4ac881c8e | 32 | #define TIM_MST TIM5 |
ebrus | 0:6bc4ac881c8e | 33 | |
ebrus | 0:6bc4ac881c8e | 34 | static TIM_HandleTypeDef TimMasterHandle; |
ebrus | 0:6bc4ac881c8e | 35 | static int us_ticker_inited = 0; |
ebrus | 0:6bc4ac881c8e | 36 | |
ebrus | 0:6bc4ac881c8e | 37 | void us_ticker_init(void) { |
ebrus | 0:6bc4ac881c8e | 38 | if (us_ticker_inited) return; |
ebrus | 0:6bc4ac881c8e | 39 | us_ticker_inited = 1; |
ebrus | 0:6bc4ac881c8e | 40 | |
ebrus | 0:6bc4ac881c8e | 41 | TimMasterHandle.Instance = TIM_MST; |
ebrus | 0:6bc4ac881c8e | 42 | |
ebrus | 0:6bc4ac881c8e | 43 | HAL_InitTick(0); // The passed value is not used |
ebrus | 0:6bc4ac881c8e | 44 | } |
ebrus | 0:6bc4ac881c8e | 45 | |
ebrus | 0:6bc4ac881c8e | 46 | uint32_t us_ticker_read() { |
ebrus | 0:6bc4ac881c8e | 47 | if (!us_ticker_inited) us_ticker_init(); |
ebrus | 0:6bc4ac881c8e | 48 | return TIM_MST->CNT; |
ebrus | 0:6bc4ac881c8e | 49 | } |
ebrus | 0:6bc4ac881c8e | 50 | |
ebrus | 0:6bc4ac881c8e | 51 | void us_ticker_set_interrupt(timestamp_t timestamp) { |
ebrus | 0:6bc4ac881c8e | 52 | // Set new output compare value |
ebrus | 0:6bc4ac881c8e | 53 | __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); |
ebrus | 0:6bc4ac881c8e | 54 | // Enable IT |
ebrus | 0:6bc4ac881c8e | 55 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
ebrus | 0:6bc4ac881c8e | 56 | } |
ebrus | 0:6bc4ac881c8e | 57 | |
ebrus | 0:6bc4ac881c8e | 58 | void us_ticker_disable_interrupt(void) { |
ebrus | 0:6bc4ac881c8e | 59 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
ebrus | 0:6bc4ac881c8e | 60 | } |
ebrus | 0:6bc4ac881c8e | 61 | |
ebrus | 0:6bc4ac881c8e | 62 | void us_ticker_clear_interrupt(void) { |
ebrus | 0:6bc4ac881c8e | 63 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
ebrus | 0:6bc4ac881c8e | 64 | } |