en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_hal_cortex.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
0:9b334a45a8ff 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32l1xx_hal_cortex.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.0.0
bogdanm 0:9b334a45a8ff 6 * @date 5-September-2014
bogdanm 0:9b334a45a8ff 7 * @brief CORTEX HAL module driver.
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * This file provides firmware functions to manage the following
bogdanm 0:9b334a45a8ff 10 * functionalities of the CORTEX:
bogdanm 0:9b334a45a8ff 11 * + Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 12 * + Peripheral Control functions
bogdanm 0:9b334a45a8ff 13 *
bogdanm 0:9b334a45a8ff 14 * @verbatim
bogdanm 0:9b334a45a8ff 15 ==============================================================================
bogdanm 0:9b334a45a8ff 16 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 17 ==============================================================================
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 [..]
bogdanm 0:9b334a45a8ff 20 *** How to configure Interrupts using Cortex HAL driver ***
bogdanm 0:9b334a45a8ff 21 ===========================================================
bogdanm 0:9b334a45a8ff 22 [..]
bogdanm 0:9b334a45a8ff 23 This section provide functions allowing to configure the NVIC interrupts (IRQ).
bogdanm 0:9b334a45a8ff 24 The Cortex-M3 exceptions are managed by CMSIS functions.
bogdanm 0:9b334a45a8ff 25
bogdanm 0:9b334a45a8ff 26 (#) Configure the NVIC Priority Grouping using HAL_NVIC_SetPriorityGrouping()
bogdanm 0:9b334a45a8ff 27 function according to the following table.
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 The table below gives the allowed values of the pre-emption priority and subpriority according
bogdanm 0:9b334a45a8ff 30 to the Priority Grouping configuration performed by HAL_NVIC_SetPriorityGrouping() function.
bogdanm 0:9b334a45a8ff 31 ==========================================================================================================================
bogdanm 0:9b334a45a8ff 32 NVIC_PriorityGroup | NVIC_IRQChannelPreemptionPriority | NVIC_IRQChannelSubPriority | Description
bogdanm 0:9b334a45a8ff 33 ==========================================================================================================================
bogdanm 0:9b334a45a8ff 34 NVIC_PRIORITYGROUP_0 | 0 | 0-15 | 0 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 35 | | | 4 bits for subpriority
bogdanm 0:9b334a45a8ff 36 --------------------------------------------------------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 37 NVIC_PRIORITYGROUP_1 | 0-1 | 0-7 | 1 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 38 | | | 3 bits for subpriority
bogdanm 0:9b334a45a8ff 39 --------------------------------------------------------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 40 NVIC_PRIORITYGROUP_2 | 0-3 | 0-3 | 2 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 41 | | | 2 bits for subpriority
bogdanm 0:9b334a45a8ff 42 --------------------------------------------------------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 43 NVIC_PRIORITYGROUP_3 | 0-7 | 0-1 | 3 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 44 | | | 1 bits for subpriority
bogdanm 0:9b334a45a8ff 45 --------------------------------------------------------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 46 NVIC_PRIORITYGROUP_4 | 0-15 | 0 | 4 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 47 | | | 0 bits for subpriority
bogdanm 0:9b334a45a8ff 48 ==========================================================================================================================
bogdanm 0:9b334a45a8ff 49 (#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority()
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 (#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ()
bogdanm 0:9b334a45a8ff 52
bogdanm 0:9b334a45a8ff 53
bogdanm 0:9b334a45a8ff 54 -@- When the NVIC_PRIORITYGROUP_0 is selected, IRQ pre-emption is no more possible.
bogdanm 0:9b334a45a8ff 55 The pending IRQ priority will be managed only by the sub priority.
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 -@- IRQ priority order (sorted by highest to lowest priority):
bogdanm 0:9b334a45a8ff 58 (+@) Lowest pre-emption priority
bogdanm 0:9b334a45a8ff 59 (+@) Lowest sub priority
bogdanm 0:9b334a45a8ff 60 (+@) Lowest hardware priority (IRQ number)
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 [..]
bogdanm 0:9b334a45a8ff 63 *** How to configure Systick using Cortex HAL driver ***
bogdanm 0:9b334a45a8ff 64 ========================================================
bogdanm 0:9b334a45a8ff 65 [..]
bogdanm 0:9b334a45a8ff 66 Setup SysTick Timer for 1 msec interrupts.
bogdanm 0:9b334a45a8ff 67
bogdanm 0:9b334a45a8ff 68 (+) The HAL_SYSTICK_Config()function calls the SysTick_Config() function which
bogdanm 0:9b334a45a8ff 69 is a CMSIS function that:
bogdanm 0:9b334a45a8ff 70 (++) Configures the SysTick Reload register with value passed as function parameter.
bogdanm 0:9b334a45a8ff 71 (++) Configures the SysTick IRQ priority to the lowest value (0x0F).
bogdanm 0:9b334a45a8ff 72 (++) Resets the SysTick Counter register.
bogdanm 0:9b334a45a8ff 73 (++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK).
bogdanm 0:9b334a45a8ff 74 (++) Enables the SysTick Interrupt.
bogdanm 0:9b334a45a8ff 75 (++) Starts the SysTick Counter.
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77 (+) You can change the SysTick Clock source to be HCLK_Div8 by calling the macro
bogdanm 0:9b334a45a8ff 78 __HAL_CORTEX_SYSTICKCLK_CONFIG(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
bogdanm 0:9b334a45a8ff 79 HAL_SYSTICK_Config() function call. The __HAL_CORTEX_SYSTICKCLK_CONFIG() macro is defined
bogdanm 0:9b334a45a8ff 80 inside the stm32l1xx_hal_cortex.h file.
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 (+) You can change the SysTick IRQ priority by calling the
bogdanm 0:9b334a45a8ff 83 HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function
bogdanm 0:9b334a45a8ff 84 call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function.
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 (+) To adjust the SysTick time base, use the following formula:
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s)
bogdanm 0:9b334a45a8ff 89 (++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function
bogdanm 0:9b334a45a8ff 90 (++) Reload Value should not exceed 0xFFFFFF
bogdanm 0:9b334a45a8ff 91
bogdanm 0:9b334a45a8ff 92 @endverbatim
bogdanm 0:9b334a45a8ff 93 ******************************************************************************
bogdanm 0:9b334a45a8ff 94 * @attention
bogdanm 0:9b334a45a8ff 95 *
bogdanm 0:9b334a45a8ff 96 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 97 *
bogdanm 0:9b334a45a8ff 98 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 99 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 100 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 101 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 102 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 103 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 104 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 105 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 106 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 107 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 108 *
bogdanm 0:9b334a45a8ff 109 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 110 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 111 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 112 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 113 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 114 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 115 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 116 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 117 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 118 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 119 *
bogdanm 0:9b334a45a8ff 120 ******************************************************************************
bogdanm 0:9b334a45a8ff 121 */
bogdanm 0:9b334a45a8ff 122
bogdanm 0:9b334a45a8ff 123 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 124 #include "stm32l1xx_hal.h"
bogdanm 0:9b334a45a8ff 125
bogdanm 0:9b334a45a8ff 126 /** @addtogroup STM32L1xx_HAL_Driver
bogdanm 0:9b334a45a8ff 127 * @{
bogdanm 0:9b334a45a8ff 128 */
bogdanm 0:9b334a45a8ff 129
bogdanm 0:9b334a45a8ff 130 /** @defgroup CORTEX CORTEX
bogdanm 0:9b334a45a8ff 131 * @brief CORTEX HAL module driver
bogdanm 0:9b334a45a8ff 132 * @{
bogdanm 0:9b334a45a8ff 133 */
bogdanm 0:9b334a45a8ff 134
bogdanm 0:9b334a45a8ff 135 #ifdef HAL_CORTEX_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 138 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 139 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 140 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 141 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 142 /* Private functions ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 143
bogdanm 0:9b334a45a8ff 144 /** @defgroup CORTEX_Exported_Functions CORTEX Exported Functions
bogdanm 0:9b334a45a8ff 145 * @{
bogdanm 0:9b334a45a8ff 146 */
bogdanm 0:9b334a45a8ff 147
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 /** @defgroup CORTEX_Exported_Functions_Group1 Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 150 * @brief Initialization and Configuration functions
bogdanm 0:9b334a45a8ff 151 *
bogdanm 0:9b334a45a8ff 152 @verbatim
bogdanm 0:9b334a45a8ff 153 ==============================================================================
bogdanm 0:9b334a45a8ff 154 ##### Initialization and de-initialization functions #####
bogdanm 0:9b334a45a8ff 155 ==============================================================================
bogdanm 0:9b334a45a8ff 156 [..]
bogdanm 0:9b334a45a8ff 157 This section provide the Cortex HAL driver functions allowing to configure Interrupts
bogdanm 0:9b334a45a8ff 158 Systick functionalities
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160 @endverbatim
bogdanm 0:9b334a45a8ff 161 * @{
bogdanm 0:9b334a45a8ff 162 */
bogdanm 0:9b334a45a8ff 163
bogdanm 0:9b334a45a8ff 164
bogdanm 0:9b334a45a8ff 165 /**
bogdanm 0:9b334a45a8ff 166 * @brief Sets the priority grouping field (pre-emption priority and subpriority)
bogdanm 0:9b334a45a8ff 167 * using the required unlock sequence.
bogdanm 0:9b334a45a8ff 168 * @param PriorityGroup: The priority grouping bits length.
bogdanm 0:9b334a45a8ff 169 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 170 * @arg NVIC_PRIORITYGROUP_0: 0 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 171 * 4 bits for subpriority
bogdanm 0:9b334a45a8ff 172 * @arg NVIC_PRIORITYGROUP_1: 1 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 173 * 3 bits for subpriority
bogdanm 0:9b334a45a8ff 174 * @arg NVIC_PRIORITYGROUP_2: 2 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 175 * 2 bits for subpriority
bogdanm 0:9b334a45a8ff 176 * @arg NVIC_PRIORITYGROUP_3: 3 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 177 * 1 bits for subpriority
bogdanm 0:9b334a45a8ff 178 * @arg NVIC_PRIORITYGROUP_4: 4 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 179 * 0 bits for subpriority
bogdanm 0:9b334a45a8ff 180 * @note When the NVIC_PriorityGroup_0 is selected, IRQ pre-emption is no more possible.
bogdanm 0:9b334a45a8ff 181 * The pending IRQ priority will be managed only by the subpriority.
bogdanm 0:9b334a45a8ff 182 * @retval None
bogdanm 0:9b334a45a8ff 183 */
bogdanm 0:9b334a45a8ff 184 void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
bogdanm 0:9b334a45a8ff 185 {
bogdanm 0:9b334a45a8ff 186 /* Check the parameters */
bogdanm 0:9b334a45a8ff 187 assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 /* Set the PRIGROUP[10:8] bits according to the PriorityGroup parameter value */
bogdanm 0:9b334a45a8ff 190 NVIC_SetPriorityGrouping(PriorityGroup);
bogdanm 0:9b334a45a8ff 191 }
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 /**
bogdanm 0:9b334a45a8ff 194 * @brief Sets the priority of an interrupt.
bogdanm 0:9b334a45a8ff 195 * @param IRQn: External interrupt number
bogdanm 0:9b334a45a8ff 196 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 197 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xx.h))
bogdanm 0:9b334a45a8ff 198 * @param PreemptPriority: The pre-emption priority for the IRQn channel.
bogdanm 0:9b334a45a8ff 199 * This parameter can be a value between 0 and 15
bogdanm 0:9b334a45a8ff 200 * A lower priority value indicates a higher priority
bogdanm 0:9b334a45a8ff 201 * @param SubPriority: the subpriority level for the IRQ channel.
bogdanm 0:9b334a45a8ff 202 * This parameter can be a value between 0 and 15
bogdanm 0:9b334a45a8ff 203 * A lower priority value indicates a higher priority.
bogdanm 0:9b334a45a8ff 204 * @retval None
bogdanm 0:9b334a45a8ff 205 */
bogdanm 0:9b334a45a8ff 206 void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
bogdanm 0:9b334a45a8ff 207 {
bogdanm 0:9b334a45a8ff 208 uint32_t prioritygroup = 0x00;
bogdanm 0:9b334a45a8ff 209
bogdanm 0:9b334a45a8ff 210 /* Check the parameters */
bogdanm 0:9b334a45a8ff 211 assert_param(IS_NVIC_SUB_PRIORITY(SubPriority));
bogdanm 0:9b334a45a8ff 212 assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
bogdanm 0:9b334a45a8ff 213
bogdanm 0:9b334a45a8ff 214 prioritygroup = NVIC_GetPriorityGrouping();
bogdanm 0:9b334a45a8ff 215
bogdanm 0:9b334a45a8ff 216 NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
bogdanm 0:9b334a45a8ff 217 }
bogdanm 0:9b334a45a8ff 218
bogdanm 0:9b334a45a8ff 219 /**
bogdanm 0:9b334a45a8ff 220 * @brief Enables a device specific interrupt in the NVIC interrupt controller.
bogdanm 0:9b334a45a8ff 221 * @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig()
bogdanm 0:9b334a45a8ff 222 * function should be called before.
bogdanm 0:9b334a45a8ff 223 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 224 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 225 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xx.h))
bogdanm 0:9b334a45a8ff 226 * @retval None
bogdanm 0:9b334a45a8ff 227 */
bogdanm 0:9b334a45a8ff 228 void HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 229 {
bogdanm 0:9b334a45a8ff 230 /* Enable interrupt */
bogdanm 0:9b334a45a8ff 231 NVIC_EnableIRQ(IRQn);
bogdanm 0:9b334a45a8ff 232 }
bogdanm 0:9b334a45a8ff 233
bogdanm 0:9b334a45a8ff 234 /**
bogdanm 0:9b334a45a8ff 235 * @brief Disables a device specific interrupt in the NVIC interrupt controller.
bogdanm 0:9b334a45a8ff 236 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 237 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 238 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 239 * @retval None
bogdanm 0:9b334a45a8ff 240 */
bogdanm 0:9b334a45a8ff 241 void HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 242 {
bogdanm 0:9b334a45a8ff 243 /* Disable interrupt */
bogdanm 0:9b334a45a8ff 244 NVIC_DisableIRQ(IRQn);
bogdanm 0:9b334a45a8ff 245 }
bogdanm 0:9b334a45a8ff 246
bogdanm 0:9b334a45a8ff 247 /**
bogdanm 0:9b334a45a8ff 248 * @brief Initiates a system reset request to reset the MCU.
bogdanm 0:9b334a45a8ff 249 * @retval None
bogdanm 0:9b334a45a8ff 250 */
bogdanm 0:9b334a45a8ff 251 void HAL_NVIC_SystemReset(void)
bogdanm 0:9b334a45a8ff 252 {
bogdanm 0:9b334a45a8ff 253 /* System Reset */
bogdanm 0:9b334a45a8ff 254 NVIC_SystemReset();
bogdanm 0:9b334a45a8ff 255 }
bogdanm 0:9b334a45a8ff 256
bogdanm 0:9b334a45a8ff 257 /**
bogdanm 0:9b334a45a8ff 258 * @brief Initializes the System Timer and its interrupt, and starts the System Tick Timer.
bogdanm 0:9b334a45a8ff 259 * Counter is in free running mode to generate periodic interrupts.
bogdanm 0:9b334a45a8ff 260 * @param TicksNumb: Specifies the ticks Number of ticks between two interrupts.
bogdanm 0:9b334a45a8ff 261 * @retval status: - 0 Function succeeded.
bogdanm 0:9b334a45a8ff 262 * - 1 Function failed.
bogdanm 0:9b334a45a8ff 263 */
bogdanm 0:9b334a45a8ff 264 uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb)
bogdanm 0:9b334a45a8ff 265 {
bogdanm 0:9b334a45a8ff 266 return SysTick_Config(TicksNumb);
bogdanm 0:9b334a45a8ff 267 }
bogdanm 0:9b334a45a8ff 268 /**
bogdanm 0:9b334a45a8ff 269 * @}
bogdanm 0:9b334a45a8ff 270 */
bogdanm 0:9b334a45a8ff 271
bogdanm 0:9b334a45a8ff 272 /** @defgroup CORTEX_Exported_Functions_Group2 Peripheral Control functions
bogdanm 0:9b334a45a8ff 273 * @brief Cortex control functions
bogdanm 0:9b334a45a8ff 274 *
bogdanm 0:9b334a45a8ff 275 @verbatim
bogdanm 0:9b334a45a8ff 276 ==============================================================================
bogdanm 0:9b334a45a8ff 277 ##### Peripheral Control functions #####
bogdanm 0:9b334a45a8ff 278 ==============================================================================
bogdanm 0:9b334a45a8ff 279 [..]
bogdanm 0:9b334a45a8ff 280 This subsection provides a set of functions allowing to control the CORTEX
bogdanm 0:9b334a45a8ff 281 (NVIC, SYSTICK) functionalities.
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283
bogdanm 0:9b334a45a8ff 284 @endverbatim
bogdanm 0:9b334a45a8ff 285 * @{
bogdanm 0:9b334a45a8ff 286 */
bogdanm 0:9b334a45a8ff 287
bogdanm 0:9b334a45a8ff 288 /**
bogdanm 0:9b334a45a8ff 289 * @brief Gets the priority grouping field from the NVIC Interrupt Controller.
bogdanm 0:9b334a45a8ff 290 * @retval Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field)
bogdanm 0:9b334a45a8ff 291 */
bogdanm 0:9b334a45a8ff 292 uint32_t HAL_NVIC_GetPriorityGrouping(void)
bogdanm 0:9b334a45a8ff 293 {
bogdanm 0:9b334a45a8ff 294 /* Get the PRIGROUP[10:8] field value */
bogdanm 0:9b334a45a8ff 295 return NVIC_GetPriorityGrouping();
bogdanm 0:9b334a45a8ff 296 }
bogdanm 0:9b334a45a8ff 297
bogdanm 0:9b334a45a8ff 298 /**
bogdanm 0:9b334a45a8ff 299 * @brief Gets the priority of an interrupt.
bogdanm 0:9b334a45a8ff 300 * @param IRQn: External interrupt number
bogdanm 0:9b334a45a8ff 301 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 302 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 303 * @param PriorityGroup: the priority grouping bits length.
bogdanm 0:9b334a45a8ff 304 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 305 * @arg NVIC_PRIORITYGROUP_0: 0 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 306 * 4 bits for subpriority
bogdanm 0:9b334a45a8ff 307 * @arg NVIC_PRIORITYGROUP_1: 1 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 308 * 3 bits for subpriority
bogdanm 0:9b334a45a8ff 309 * @arg NVIC_PRIORITYGROUP_2: 2 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 310 * 2 bits for subpriority
bogdanm 0:9b334a45a8ff 311 * @arg NVIC_PRIORITYGROUP_3: 3 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 312 * 1 bits for subpriority
bogdanm 0:9b334a45a8ff 313 * @arg NVIC_PRIORITYGROUP_4: 4 bits for pre-emption priority
bogdanm 0:9b334a45a8ff 314 * 0 bits for subpriority
bogdanm 0:9b334a45a8ff 315 * @param pPreemptPriority: Pointer on the Preemptive priority value (starting from 0).
bogdanm 0:9b334a45a8ff 316 * @param pSubPriority: Pointer on the Subpriority value (starting from 0).
bogdanm 0:9b334a45a8ff 317 * @retval None
bogdanm 0:9b334a45a8ff 318 */
bogdanm 0:9b334a45a8ff 319 void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
bogdanm 0:9b334a45a8ff 320 {
bogdanm 0:9b334a45a8ff 321 /* Check the parameters */
bogdanm 0:9b334a45a8ff 322 assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
bogdanm 0:9b334a45a8ff 323 /* Get priority for Cortex-M system or device specific interrupts */
bogdanm 0:9b334a45a8ff 324 NVIC_DecodePriority(NVIC_GetPriority(IRQn), PriorityGroup, pPreemptPriority, pSubPriority);
bogdanm 0:9b334a45a8ff 325 }
bogdanm 0:9b334a45a8ff 326
bogdanm 0:9b334a45a8ff 327 /**
bogdanm 0:9b334a45a8ff 328 * @brief Sets Pending bit of an external interrupt.
bogdanm 0:9b334a45a8ff 329 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 330 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 331 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 332 * @retval None
bogdanm 0:9b334a45a8ff 333 */
bogdanm 0:9b334a45a8ff 334 void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 335 {
bogdanm 0:9b334a45a8ff 336 /* Set interrupt pending */
bogdanm 0:9b334a45a8ff 337 NVIC_SetPendingIRQ(IRQn);
bogdanm 0:9b334a45a8ff 338 }
bogdanm 0:9b334a45a8ff 339
bogdanm 0:9b334a45a8ff 340 /**
bogdanm 0:9b334a45a8ff 341 * @brief Gets Pending Interrupt (reads the pending register in the NVIC
bogdanm 0:9b334a45a8ff 342 * and returns the pending bit for the specified interrupt).
bogdanm 0:9b334a45a8ff 343 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 344 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 345 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 346 * @retval status: - 0 Interrupt status is not pending.
bogdanm 0:9b334a45a8ff 347 * - 1 Interrupt status is pending.
bogdanm 0:9b334a45a8ff 348 */
bogdanm 0:9b334a45a8ff 349 uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 350 {
bogdanm 0:9b334a45a8ff 351 /* Return 1 if pending else 0 */
bogdanm 0:9b334a45a8ff 352 return NVIC_GetPendingIRQ(IRQn);
bogdanm 0:9b334a45a8ff 353 }
bogdanm 0:9b334a45a8ff 354
bogdanm 0:9b334a45a8ff 355 /**
bogdanm 0:9b334a45a8ff 356 * @brief Clears the pending bit of an external interrupt.
bogdanm 0:9b334a45a8ff 357 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 358 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 359 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 360 * @retval None
bogdanm 0:9b334a45a8ff 361 */
bogdanm 0:9b334a45a8ff 362 void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 363 {
bogdanm 0:9b334a45a8ff 364 /* Clear pending interrupt */
bogdanm 0:9b334a45a8ff 365 NVIC_ClearPendingIRQ(IRQn);
bogdanm 0:9b334a45a8ff 366 }
bogdanm 0:9b334a45a8ff 367
bogdanm 0:9b334a45a8ff 368 /**
bogdanm 0:9b334a45a8ff 369 * @brief Gets active interrupt ( reads the active register in NVIC and returns the active bit).
bogdanm 0:9b334a45a8ff 370 * @param IRQn External interrupt number
bogdanm 0:9b334a45a8ff 371 * This parameter can be an enumerator of IRQn_Type enumeration
bogdanm 0:9b334a45a8ff 372 * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32l1xxxx.h))
bogdanm 0:9b334a45a8ff 373 * @retval status: - 0 Interrupt status is not pending.
bogdanm 0:9b334a45a8ff 374 * - 1 Interrupt status is pending.
bogdanm 0:9b334a45a8ff 375 */
bogdanm 0:9b334a45a8ff 376 uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn)
bogdanm 0:9b334a45a8ff 377 {
bogdanm 0:9b334a45a8ff 378 /* Return 1 if active else 0 */
bogdanm 0:9b334a45a8ff 379 return NVIC_GetActive(IRQn);
bogdanm 0:9b334a45a8ff 380 }
bogdanm 0:9b334a45a8ff 381
bogdanm 0:9b334a45a8ff 382 /**
bogdanm 0:9b334a45a8ff 383 * @brief Configures the SysTick clock source.
bogdanm 0:9b334a45a8ff 384 * @param CLKSource: specifies the SysTick clock source.
bogdanm 0:9b334a45a8ff 385 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 386 * @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
bogdanm 0:9b334a45a8ff 387 * @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source.
bogdanm 0:9b334a45a8ff 388 * @retval None
bogdanm 0:9b334a45a8ff 389 */
bogdanm 0:9b334a45a8ff 390 void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)
bogdanm 0:9b334a45a8ff 391 {
bogdanm 0:9b334a45a8ff 392 /* Check the parameters */
bogdanm 0:9b334a45a8ff 393 assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource));
bogdanm 0:9b334a45a8ff 394 if (CLKSource == SYSTICK_CLKSOURCE_HCLK)
bogdanm 0:9b334a45a8ff 395 {
bogdanm 0:9b334a45a8ff 396 SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
bogdanm 0:9b334a45a8ff 397 }
bogdanm 0:9b334a45a8ff 398 else
bogdanm 0:9b334a45a8ff 399 {
bogdanm 0:9b334a45a8ff 400 SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK;
bogdanm 0:9b334a45a8ff 401 }
bogdanm 0:9b334a45a8ff 402 }
bogdanm 0:9b334a45a8ff 403
bogdanm 0:9b334a45a8ff 404 /**
bogdanm 0:9b334a45a8ff 405 * @brief This function handles SYSTICK interrupt request.
bogdanm 0:9b334a45a8ff 406 * @retval None
bogdanm 0:9b334a45a8ff 407 */
bogdanm 0:9b334a45a8ff 408 void HAL_SYSTICK_IRQHandler(void)
bogdanm 0:9b334a45a8ff 409 {
bogdanm 0:9b334a45a8ff 410 HAL_SYSTICK_Callback();
bogdanm 0:9b334a45a8ff 411 }
bogdanm 0:9b334a45a8ff 412
bogdanm 0:9b334a45a8ff 413 /**
bogdanm 0:9b334a45a8ff 414 * @brief SYSTICK callback.
bogdanm 0:9b334a45a8ff 415 * @retval None
bogdanm 0:9b334a45a8ff 416 */
bogdanm 0:9b334a45a8ff 417 __weak void HAL_SYSTICK_Callback(void)
bogdanm 0:9b334a45a8ff 418 {
bogdanm 0:9b334a45a8ff 419 /* NOTE : This function Should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 420 the HAL_SYSTICK_Callback could be implemented in the user file
bogdanm 0:9b334a45a8ff 421 */
bogdanm 0:9b334a45a8ff 422 }
bogdanm 0:9b334a45a8ff 423
bogdanm 0:9b334a45a8ff 424 /**
bogdanm 0:9b334a45a8ff 425 * @}
bogdanm 0:9b334a45a8ff 426 */
bogdanm 0:9b334a45a8ff 427
bogdanm 0:9b334a45a8ff 428 /**
bogdanm 0:9b334a45a8ff 429 * @}
bogdanm 0:9b334a45a8ff 430 */
bogdanm 0:9b334a45a8ff 431
bogdanm 0:9b334a45a8ff 432 #endif /* HAL_CORTEX_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 433 /**
bogdanm 0:9b334a45a8ff 434 * @}
bogdanm 0:9b334a45a8ff 435 */
bogdanm 0:9b334a45a8ff 436
bogdanm 0:9b334a45a8ff 437 /**
bogdanm 0:9b334a45a8ff 438 * @}
bogdanm 0:9b334a45a8ff 439 */
bogdanm 0:9b334a45a8ff 440
bogdanm 0:9b334a45a8ff 441 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/