shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

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targets/cmsis/TARGET_STM/TARGET_DISCO_F051R8/stm32f0xx_misc.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
130:1dec54e4aec3 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 130:1dec54e4aec3 1 /**
mbed_official 130:1dec54e4aec3 2 ******************************************************************************
mbed_official 130:1dec54e4aec3 3 * @file stm32f0xx_misc.c
mbed_official 130:1dec54e4aec3 4 * @author MCD Application Team
mbed_official 130:1dec54e4aec3 5 * @version V1.3.0
mbed_official 130:1dec54e4aec3 6 * @date 16-January-2014
mbed_official 130:1dec54e4aec3 7 * @brief This file provides all the miscellaneous firmware functions (add-on
mbed_official 130:1dec54e4aec3 8 * to CMSIS functions).
mbed_official 130:1dec54e4aec3 9 ******************************************************************************
mbed_official 130:1dec54e4aec3 10 * @attention
mbed_official 130:1dec54e4aec3 11 *
mbed_official 130:1dec54e4aec3 12 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 130:1dec54e4aec3 13 *
mbed_official 130:1dec54e4aec3 14 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 130:1dec54e4aec3 15 * are permitted provided that the following conditions are met:
mbed_official 130:1dec54e4aec3 16 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 130:1dec54e4aec3 17 * this list of conditions and the following disclaimer.
mbed_official 130:1dec54e4aec3 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 130:1dec54e4aec3 19 * this list of conditions and the following disclaimer in the documentation
mbed_official 130:1dec54e4aec3 20 * and/or other materials provided with the distribution.
mbed_official 130:1dec54e4aec3 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 130:1dec54e4aec3 22 * may be used to endorse or promote products derived from this software
mbed_official 130:1dec54e4aec3 23 * without specific prior written permission.
mbed_official 130:1dec54e4aec3 24 *
mbed_official 130:1dec54e4aec3 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 130:1dec54e4aec3 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 130:1dec54e4aec3 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 130:1dec54e4aec3 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 130:1dec54e4aec3 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 130:1dec54e4aec3 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 130:1dec54e4aec3 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 130:1dec54e4aec3 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 130:1dec54e4aec3 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 130:1dec54e4aec3 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 130:1dec54e4aec3 35 *
mbed_official 130:1dec54e4aec3 36 ******************************************************************************
mbed_official 130:1dec54e4aec3 37 */
mbed_official 130:1dec54e4aec3 38
mbed_official 130:1dec54e4aec3 39 /* Includes ------------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 40 #include "stm32f0xx_misc.h"
mbed_official 130:1dec54e4aec3 41
mbed_official 130:1dec54e4aec3 42 /** @addtogroup STM32F0xx_StdPeriph_Driver
mbed_official 130:1dec54e4aec3 43 * @{
mbed_official 130:1dec54e4aec3 44 */
mbed_official 130:1dec54e4aec3 45
mbed_official 130:1dec54e4aec3 46 /** @defgroup MISC
mbed_official 130:1dec54e4aec3 47 * @brief MISC driver modules
mbed_official 130:1dec54e4aec3 48 * @{
mbed_official 130:1dec54e4aec3 49 */
mbed_official 130:1dec54e4aec3 50
mbed_official 130:1dec54e4aec3 51 /* Private typedef -----------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 52 /* Private define ------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 53 /* Private macro -------------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 54 /* Private variables ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 55 /* Private function prototypes -----------------------------------------------*/
mbed_official 130:1dec54e4aec3 56 /* Private functions ---------------------------------------------------------*/
mbed_official 130:1dec54e4aec3 57
mbed_official 130:1dec54e4aec3 58 /** @defgroup MISC_Private_Functions
mbed_official 130:1dec54e4aec3 59 * @{
mbed_official 130:1dec54e4aec3 60 */
mbed_official 130:1dec54e4aec3 61 /**
mbed_official 130:1dec54e4aec3 62 *
mbed_official 130:1dec54e4aec3 63 @verbatim
mbed_official 130:1dec54e4aec3 64 *******************************************************************************
mbed_official 130:1dec54e4aec3 65 ##### Interrupts configuration functions #####
mbed_official 130:1dec54e4aec3 66 *******************************************************************************
mbed_official 130:1dec54e4aec3 67 [..] This section provide functions allowing to configure the NVIC interrupts
mbed_official 130:1dec54e4aec3 68 (IRQ). The Cortex-M0 exceptions are managed by CMSIS functions.
mbed_official 130:1dec54e4aec3 69 (#) Enable and Configure the priority of the selected IRQ Channels.
mbed_official 130:1dec54e4aec3 70 The priority can be 0..3.
mbed_official 130:1dec54e4aec3 71
mbed_official 130:1dec54e4aec3 72 -@- Lower priority values gives higher priority.
mbed_official 130:1dec54e4aec3 73 -@- Priority Order:
mbed_official 130:1dec54e4aec3 74 (#@) Lowest priority.
mbed_official 130:1dec54e4aec3 75 (#@) Lowest hardware priority (IRQn position).
mbed_official 130:1dec54e4aec3 76
mbed_official 130:1dec54e4aec3 77 @endverbatim
mbed_official 130:1dec54e4aec3 78 */
mbed_official 130:1dec54e4aec3 79
mbed_official 130:1dec54e4aec3 80 /**
mbed_official 130:1dec54e4aec3 81 * @brief Initializes the NVIC peripheral according to the specified
mbed_official 130:1dec54e4aec3 82 * parameters in the NVIC_InitStruct.
mbed_official 130:1dec54e4aec3 83 * @param NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure that contains
mbed_official 130:1dec54e4aec3 84 * the configuration information for the specified NVIC peripheral.
mbed_official 130:1dec54e4aec3 85 * @retval None
mbed_official 130:1dec54e4aec3 86 */
mbed_official 130:1dec54e4aec3 87 void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct)
mbed_official 130:1dec54e4aec3 88 {
mbed_official 130:1dec54e4aec3 89 uint32_t tmppriority = 0x00;
mbed_official 130:1dec54e4aec3 90
mbed_official 130:1dec54e4aec3 91 /* Check the parameters */
mbed_official 130:1dec54e4aec3 92 assert_param(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd));
mbed_official 130:1dec54e4aec3 93 assert_param(IS_NVIC_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPriority));
mbed_official 130:1dec54e4aec3 94
mbed_official 130:1dec54e4aec3 95 if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE)
mbed_official 130:1dec54e4aec3 96 {
mbed_official 130:1dec54e4aec3 97 /* Compute the Corresponding IRQ Priority --------------------------------*/
mbed_official 130:1dec54e4aec3 98 tmppriority = NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel >> 0x02];
mbed_official 130:1dec54e4aec3 99 tmppriority &= (uint32_t)(~(((uint32_t)0xFF) << ((NVIC_InitStruct->NVIC_IRQChannel & 0x03) * 8)));
mbed_official 130:1dec54e4aec3 100 tmppriority |= (uint32_t)((((uint32_t)NVIC_InitStruct->NVIC_IRQChannelPriority << 6) & 0xFF) << ((NVIC_InitStruct->NVIC_IRQChannel & 0x03) * 8));
mbed_official 130:1dec54e4aec3 101
mbed_official 130:1dec54e4aec3 102 NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel >> 0x02] = tmppriority;
mbed_official 130:1dec54e4aec3 103
mbed_official 130:1dec54e4aec3 104 /* Enable the Selected IRQ Channels --------------------------------------*/
mbed_official 130:1dec54e4aec3 105 NVIC->ISER[0] = (uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F);
mbed_official 130:1dec54e4aec3 106 }
mbed_official 130:1dec54e4aec3 107 else
mbed_official 130:1dec54e4aec3 108 {
mbed_official 130:1dec54e4aec3 109 /* Disable the Selected IRQ Channels -------------------------------------*/
mbed_official 130:1dec54e4aec3 110 NVIC->ICER[0] = (uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F);
mbed_official 130:1dec54e4aec3 111 }
mbed_official 130:1dec54e4aec3 112 }
mbed_official 130:1dec54e4aec3 113
mbed_official 130:1dec54e4aec3 114 /**
mbed_official 130:1dec54e4aec3 115 * @brief Selects the condition for the system to enter low power mode.
mbed_official 130:1dec54e4aec3 116 * @param LowPowerMode: Specifies the new mode for the system to enter low power mode.
mbed_official 130:1dec54e4aec3 117 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 118 * @arg NVIC_LP_SEVONPEND: Low Power SEV on Pend.
mbed_official 130:1dec54e4aec3 119 * @arg NVIC_LP_SLEEPDEEP: Low Power DEEPSLEEP request.
mbed_official 130:1dec54e4aec3 120 * @arg NVIC_LP_SLEEPONEXIT: Low Power Sleep on Exit.
mbed_official 130:1dec54e4aec3 121 * @param NewState: new state of LP condition.
mbed_official 130:1dec54e4aec3 122 * This parameter can be: ENABLE or DISABLE.
mbed_official 130:1dec54e4aec3 123 * @retval None
mbed_official 130:1dec54e4aec3 124 */
mbed_official 130:1dec54e4aec3 125 void NVIC_SystemLPConfig(uint8_t LowPowerMode, FunctionalState NewState)
mbed_official 130:1dec54e4aec3 126 {
mbed_official 130:1dec54e4aec3 127 /* Check the parameters */
mbed_official 130:1dec54e4aec3 128 assert_param(IS_NVIC_LP(LowPowerMode));
mbed_official 130:1dec54e4aec3 129
mbed_official 130:1dec54e4aec3 130 assert_param(IS_FUNCTIONAL_STATE(NewState));
mbed_official 130:1dec54e4aec3 131
mbed_official 130:1dec54e4aec3 132 if (NewState != DISABLE)
mbed_official 130:1dec54e4aec3 133 {
mbed_official 130:1dec54e4aec3 134 SCB->SCR |= LowPowerMode;
mbed_official 130:1dec54e4aec3 135 }
mbed_official 130:1dec54e4aec3 136 else
mbed_official 130:1dec54e4aec3 137 {
mbed_official 130:1dec54e4aec3 138 SCB->SCR &= (uint32_t)(~(uint32_t)LowPowerMode);
mbed_official 130:1dec54e4aec3 139 }
mbed_official 130:1dec54e4aec3 140 }
mbed_official 130:1dec54e4aec3 141
mbed_official 130:1dec54e4aec3 142 /**
mbed_official 130:1dec54e4aec3 143 * @brief Configures the SysTick clock source.
mbed_official 130:1dec54e4aec3 144 * @param SysTick_CLKSource: specifies the SysTick clock source.
mbed_official 130:1dec54e4aec3 145 * This parameter can be one of the following values:
mbed_official 130:1dec54e4aec3 146 * @arg SysTick_CLKSource_HCLK_Div8: AHB clock divided by 8 selected as SysTick clock source.
mbed_official 130:1dec54e4aec3 147 * @arg SysTick_CLKSource_HCLK: AHB clock selected as SysTick clock source.
mbed_official 130:1dec54e4aec3 148 * @retval None
mbed_official 130:1dec54e4aec3 149 */
mbed_official 130:1dec54e4aec3 150 void SysTick_CLKSourceConfig(uint32_t SysTick_CLKSource)
mbed_official 130:1dec54e4aec3 151 {
mbed_official 130:1dec54e4aec3 152 /* Check the parameters */
mbed_official 130:1dec54e4aec3 153 assert_param(IS_SYSTICK_CLK_SOURCE(SysTick_CLKSource));
mbed_official 130:1dec54e4aec3 154
mbed_official 130:1dec54e4aec3 155 if (SysTick_CLKSource == SysTick_CLKSource_HCLK)
mbed_official 130:1dec54e4aec3 156 {
mbed_official 130:1dec54e4aec3 157 SysTick->CTRL |= SysTick_CLKSource_HCLK;
mbed_official 130:1dec54e4aec3 158 }
mbed_official 130:1dec54e4aec3 159 else
mbed_official 130:1dec54e4aec3 160 {
mbed_official 130:1dec54e4aec3 161 SysTick->CTRL &= SysTick_CLKSource_HCLK_Div8;
mbed_official 130:1dec54e4aec3 162 }
mbed_official 130:1dec54e4aec3 163 }
mbed_official 130:1dec54e4aec3 164
mbed_official 130:1dec54e4aec3 165 /**
mbed_official 130:1dec54e4aec3 166 * @}
mbed_official 130:1dec54e4aec3 167 */
mbed_official 130:1dec54e4aec3 168
mbed_official 130:1dec54e4aec3 169 /**
mbed_official 130:1dec54e4aec3 170 * @}
mbed_official 130:1dec54e4aec3 171 */
mbed_official 130:1dec54e4aec3 172
mbed_official 130:1dec54e4aec3 173 /**
mbed_official 130:1dec54e4aec3 174 * @}
mbed_official 130:1dec54e4aec3 175 */
mbed_official 130:1dec54e4aec3 176
mbed_official 130:1dec54e4aec3 177 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/