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Added current STM32 standandard libraries in version independend folder structure
author Ideenmodellierer
date Sun, 17 Feb 2019 21:12:22 +0100
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127:1369f8660eaa 128:c78bcbd5deda
1 /**
2 ******************************************************************************
3 * @file stm32f4xx_hal_timebase_tim_template.c
4 * @author MCD Application Team
5 * @brief HAL time base based on the hardware TIM Template.
6 *
7 * This file overrides the native HAL time base functions (defined as weak)
8 * the TIM time base:
9 * + Intializes the TIM peripheral generate a Period elapsed Event each 1ms
10 * + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms
11 *
12 ******************************************************************************
13 * @attention
14 *
15 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
16 *
17 * Redistribution and use in source and binary forms, with or without modification,
18 * are permitted provided that the following conditions are met:
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.
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
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 *
39 ******************************************************************************
40 */
41
42 /* Includes ------------------------------------------------------------------*/
43 #include "stm32f4xx_hal.h"
44
45 /** @addtogroup STM32F4xx_HAL_Driver
46 * @{
47 */
48
49 /** @addtogroup HAL_TimeBase_TIM
50 * @{
51 */
52
53 /* Private typedef -----------------------------------------------------------*/
54 /* Private define ------------------------------------------------------------*/
55 /* Private macro -------------------------------------------------------------*/
56 /* Private variables ---------------------------------------------------------*/
57 TIM_HandleTypeDef TimHandle;
58 /* Private function prototypes -----------------------------------------------*/
59 void TIM6_DAC_IRQHandler(void);
60 /* Private functions ---------------------------------------------------------*/
61
62 /**
63 * @brief This function configures the TIM6 as a time base source.
64 * The time source is configured to have 1ms time base with a dedicated
65 * Tick interrupt priority.
66 * @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().
68 * @param TickPriority Tick interrupt priority.
69 * @retval HAL status
70 */
71 HAL_StatusTypeDef HAL_InitTick (uint32_t TickPriority)
72 {
73 RCC_ClkInitTypeDef clkconfig;
74 uint32_t uwTimclock, uwAPB1Prescaler = 0U;
75 uint32_t uwPrescalerValue = 0U;
76 uint32_t pFLatency;
77
78 /*Configure the TIM6 IRQ priority */
79 HAL_NVIC_SetPriority(TIM6_DAC_IRQn, TickPriority ,0U);
80
81 /* Enable the TIM6 global Interrupt */
82 HAL_NVIC_EnableIRQ(TIM6_DAC_IRQn);
83
84 /* Enable TIM6 clock */
85 __HAL_RCC_TIM6_CLK_ENABLE();
86
87 /* Get clock configuration */
88 HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
89
90 /* Get APB1 prescaler */
91 uwAPB1Prescaler = clkconfig.APB1CLKDivider;
92
93 /* Compute TIM6 clock */
94 if (uwAPB1Prescaler == RCC_HCLK_DIV1)
95 {
96 uwTimclock = HAL_RCC_GetPCLK1Freq();
97 }
98 else
99 {
100 uwTimclock = 2*HAL_RCC_GetPCLK1Freq();
101 }
102
103 /* Compute the prescaler value to have TIM6 counter clock equal to 1MHz */
104 uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
105
106 /* Initialize TIM6 */
107 TimHandle.Instance = TIM6;
108
109 /* Initialize TIMx peripheral as follow:
110 + Period = [(TIM6CLK/1000) - 1]. to have a (1/1000) s time base.
111 + Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
112 + ClockDivision = 0
113 + Counter direction = Up
114 */
115 TimHandle.Init.Period = (1000000U / 1000U) - 1U;
116 TimHandle.Init.Prescaler = uwPrescalerValue;
117 TimHandle.Init.ClockDivision = 0U;
118 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
119 if(HAL_TIM_Base_Init(&TimHandle) == HAL_OK)
120 {
121 /* Start the TIM time Base generation in interrupt mode */
122 return HAL_TIM_Base_Start_IT(&TimHandle);
123 }
124
125 /* Return function status */
126 return HAL_ERROR;
127 }
128
129 /**
130 * @brief Suspend Tick increment.
131 * @note Disable the tick increment by disabling TIM6 update interrupt.
132 * @retval None
133 */
134 void HAL_SuspendTick(void)
135 {
136 /* Disable TIM6 update Interrupt */
137 __HAL_TIM_DISABLE_IT(&TimHandle, TIM_IT_UPDATE);
138 }
139
140 /**
141 * @brief Resume Tick increment.
142 * @note Enable the tick increment by Enabling TIM6 update interrupt.
143 * @retval None
144 */
145 void HAL_ResumeTick(void)
146 {
147 /* Enable TIM6 Update interrupt */
148 __HAL_TIM_ENABLE_IT(&TimHandle, TIM_IT_UPDATE);
149 }
150
151 /**
152 * @brief Period elapsed callback in non blocking mode
153 * @note This function is called when TIM6 interrupt took place, inside
154 * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
155 * a global variable "uwTick" used as application time base.
156 * @param htim TIM handle
157 * @retval None
158 */
159 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
160 {
161 HAL_IncTick();
162 }
163
164 /**
165 * @brief This function handles TIM interrupt request.
166 * @retval None
167 */
168 void TIM6_DAC_IRQHandler(void)
169 {
170 HAL_TIM_IRQHandler(&TimHandle);
171 }
172
173 /**
174 * @}
175 */
176
177 /**
178 * @}
179 */
180
181 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/