Subversion Repositories LedShow

Rev

Rev 2 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2 Rev 9
Line 10... Line 10...
10 
  *           + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms
 10 
  *           + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms
11 
  *
 11 
  *
12 
  ******************************************************************************
 12 
  ******************************************************************************
13 
  * @attention
 13 
  * @attention
14 
  *
 14 
  *
15 
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
 15 
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
- 
 
 16 
  * All rights reserved.</center></h2>
16 
  *
 17 
  *
17 
  * Redistribution and use in source and binary forms, with or without modification,
 18 
  * This software component is licensed by ST under BSD 3-Clause license,
18 
  * are permitted provided that the following conditions are met:
 19 
  * the "License"; You may not use this file except in compliance with the
19 
  *   1. Redistributions of source code must retain the above copyright notice,
 - 
 
20 
  *      this list of conditions and the following disclaimer.
 - 
 
21 
  *   2. Redistributions in binary form must reproduce the above copyright notice,
 - 
 
22 
  *      this list of conditions and the following disclaimer in the documentation
 - 
 
23 
  *      and/or other materials provided with the distribution.
 20 
  * License. You may obtain a copy of the License at:
24 
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
 - 
 
25 
  *      may be used to endorse or promote products derived from this software
 21 
  *                        opensource.org/licenses/BSD-3-Clause
26 
  *      without specific prior written permission.
 - 
 
27 
  *
 - 
 
28 
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 - 
 
29 
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 - 
 
30 
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 - 
 
31 
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 - 
 
32 
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 - 
 
33 
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 - 
 
34 
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 - 
 
35 
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 - 
 
36 
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 - 
 
37 
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 - 
 
38 
  *
 22 
  *
39 
  ******************************************************************************
 23 
  ******************************************************************************
40 
  */
 24 
  */
41 
 
 25 
 
42 
/* Includes ------------------------------------------------------------------*/
 26 
/* Includes ------------------------------------------------------------------*/
Line 63... Line 47...
63 
  * @brief  This function configures the TIM2 as a time base source.
 47 
  * @brief  This function configures the TIM2 as a time base source.
64 
  *         The time source is configured to have 1ms time base with a dedicated
 48 
  *         The time source is configured to have 1ms time base with a dedicated
65 
  *         Tick interrupt priority.
 49 
  *         Tick interrupt priority.
66 
  * @note   This function is called  automatically at the beginning of program after
 50 
  * @note   This function is called  automatically at the beginning of program after
67 
  *         reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
 51 
  *         reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
68 
  * @param  TickPriority: Tick interrupt priority.
 52 
  * @param  TickPriority Tick interrupt priority.
69 
  * @retval HAL status
 53 
  * @retval HAL status
70 
  */
 54 
  */
71 
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 55 
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
72 
{
 56 
{
73 
  RCC_ClkInitTypeDef    clkconfig;
 57 
  RCC_ClkInitTypeDef    clkconfig;
74 
  uint32_t              uwTimclock, uwAPB1Prescaler = 0U;
 58 
  uint32_t              uwTimclock, uwAPB1Prescaler = 0U;
75 
  uint32_t              uwPrescalerValue = 0U;
 59 
  uint32_t              uwPrescalerValue = 0U;
76 
  uint32_t              pFLatency;
 60 
  uint32_t              pFLatency;
- 
 
 61 
  HAL_StatusTypeDef     status = HAL_OK;
77 
 
 62 
 
78 
  /*Configure the TIM2 IRQ priority */
 - 
 
79 
  HAL_NVIC_SetPriority(TIM2_IRQn, TickPriority, 0U);
 - 
 
80 
 
 - 
 
81 
  /* Enable the TIM2 global Interrupt */
 - 
 
82 
  HAL_NVIC_EnableIRQ(TIM2_IRQn);
 - 
 
83 
 
 63 
 
84 
  /* Enable TIM2 clock */
 64 
  /* Enable TIM2 clock */
85 
  __HAL_RCC_TIM2_CLK_ENABLE();
 65 
  __HAL_RCC_TIM2_CLK_ENABLE();
86 
 
 66 
 
87 
  /* Get clock configuration */
 67 
  /* Get clock configuration */
Line 115... Line 95...
115 
  TimHandle.Init.Period = (1000000U / 1000U) - 1U;
 95 
  TimHandle.Init.Period = (1000000U / 1000U) - 1U;
116 
  TimHandle.Init.Prescaler = uwPrescalerValue;
 96 
  TimHandle.Init.Prescaler = uwPrescalerValue;
117 
  TimHandle.Init.ClockDivision = 0U;
 97 
  TimHandle.Init.ClockDivision = 0U;
118 
  TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
 98 
  TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
119 
  TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
 99 
  TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
120 
  if (HAL_TIM_Base_Init(&TimHandle) == HAL_OK)
 100 
  status = HAL_TIM_Base_Init(&TimHandle);
- 
 
 101 
  if (status == HAL_OK)
121 
  {
 102 
  {
122 
    /* Start the TIM time Base generation in interrupt mode */
 103 
    /* Start the TIM time Base generation in interrupt mode */
123 
    return HAL_TIM_Base_Start_IT(&TimHandle);
 104 
    status = HAL_TIM_Base_Start_IT(&TimHandle);
- 
 
 105 
    if (status == HAL_OK)
- 
 
 106 
    {
- 
 
 107 
      /* Enable the TIM2 global Interrupt */
- 
 
 108 
      HAL_NVIC_EnableIRQ(TIM2_IRQn);
- 
 
 109 
 
- 
 
 110 
      if (TickPriority < (1UL << __NVIC_PRIO_BITS))
- 
 
 111 
      {
- 
 
 112 
        /*Configure the TIM2 IRQ priority */
- 
 
 113 
        HAL_NVIC_SetPriority(TIM2_IRQn, TickPriority ,0);
- 
 
 114 
        uwTickPrio = TickPriority;
- 
 
 115 
      }
- 
 
 116 
      else
- 
 
 117 
      {
- 
 
 118 
        status = HAL_ERROR;
- 
 
 119 
      }
- 
 
 120 
    }
124 
  }
 121 
  }
125 
 
 122 
 
126 
  /* Return function status */
 123 
  /* Return function status */
127 
  return HAL_ERROR;
 124 
  return status;
128 
}
 125 
}
129 
 
 126 
 
130 
/**
 127 
/**
131 
  * @brief  Suspend Tick increment.
 128 
  * @brief  Suspend Tick increment.
132 
  * @note   Disable the tick increment by disabling TIM2 update interrupt.
 129 
  * @note   Disable the tick increment by disabling TIM2 update interrupt.
Line 152... Line 149...
152 
/**
 149 
/**
153 
  * @brief  Period elapsed callback in non blocking mode
 150 
  * @brief  Period elapsed callback in non blocking mode
154 
  * @note   This function is called  when TIM2 interrupt took place, inside
 151 
  * @note   This function is called  when TIM2 interrupt took place, inside
155 
  * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
 152 
  * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
156 
  * a global variable "uwTick" used as application time base.
 153 
  * a global variable "uwTick" used as application time base.
157 
  * @param  htim : TIM handle
 154 
  * @param  htim TIM handle
158 
  * @retval None
 155 
  * @retval None
159 
  */
 156 
  */
160 
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
 157 
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
161 
{
 158 
{
162 
  HAL_IncTick();
 159 
  HAL_IncTick();