/** | |
****************************************************************************** | |
* @file stm32f0xx_misc.c | |
* @author MCD Application Team | |
* @version V1.0.0RC1 | |
* @date 27-January-2012 | |
* @brief This file provides all the miscellaneous firmware functions (add-on | |
* to CMSIS functions). | |
****************************************************************************** | |
* @attention | |
* | |
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS | |
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE | |
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY | |
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING | |
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE | |
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | |
* | |
* FOR MORE INFORMATION PLEASE READ CAREFULLY THE LICENSE AGREEMENT FILE | |
* LOCATED IN THE ROOT DIRECTORY OF THIS FIRMWARE PACKAGE. | |
* | |
* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2> | |
****************************************************************************** | |
*/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32f0xx_misc.h" | |
/** @addtogroup STM32F0xx_StdPeriph_Driver | |
* @{ | |
*/ | |
/** @defgroup MISC | |
* @brief MISC driver modules | |
* @{ | |
*/ | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/* Private macro -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/** @defgroup MISC_Private_Functions | |
* @{ | |
*/ | |
/** | |
* | |
@verbatim | |
******************************************************************************* | |
##### Interrupts configuration functions ##### | |
******************************************************************************* | |
[..] This section provide functions allowing to configure the NVIC interrupts | |
(IRQ). The Cortex-M0 exceptions are managed by CMSIS functions. | |
(#) Enable and Configure the priority of the selected IRQ Channels. | |
The priority can be 0..3. | |
-@- Lower priority values gives higher priority. | |
-@- Priority Order: | |
(#@) Lowest priority. | |
(#@) Lowest hardware priority (IRQn position). | |
@endverbatim | |
*/ | |
/** | |
* @brief Initializes the NVIC peripheral according to the specified | |
* parameters in the NVIC_InitStruct. | |
* @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig() | |
* function should be called before. | |
* @param NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure that contains | |
* the configuration information for the specified NVIC peripheral. | |
* @retval None | |
*/ | |
void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct) | |
{ | |
uint32_t tmppriority = 0x00; | |
/* Check the parameters */ | |
assert_param(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd)); | |
assert_param(IS_NVIC_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPriority)); | |
if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE) | |
{ | |
/* Compute the Corresponding IRQ Priority --------------------------------*/ | |
tmppriority = NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel >> 0x02]; | |
tmppriority &= (uint32_t)(~(((uint32_t)0xFF) << ((NVIC_InitStruct->NVIC_IRQChannel & 0x03) * 8))); | |
tmppriority |= (uint32_t)((((uint32_t)NVIC_InitStruct->NVIC_IRQChannelPriority << 6) & 0xFF) << ((NVIC_InitStruct->NVIC_IRQChannel & 0x03) * 8)); | |
NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel >> 0x02] = tmppriority; | |
/* Enable the Selected IRQ Channels --------------------------------------*/ | |
NVIC->ISER[0] = (uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F); | |
} | |
else | |
{ | |
/* Disable the Selected IRQ Channels -------------------------------------*/ | |
NVIC->ICER[0] = (uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F); | |
} | |
} | |
/** | |
* @brief Selects the condition for the system to enter low power mode. | |
* @param LowPowerMode: Specifies the new mode for the system to enter low power mode. | |
* This parameter can be one of the following values: | |
* @arg NVIC_LP_SEVONPEND: Low Power SEV on Pend. | |
* @arg NVIC_LP_SLEEPDEEP: Low Power DEEPSLEEP request. | |
* @arg NVIC_LP_SLEEPONEXIT: Low Power Sleep on Exit. | |
* @param NewState: new state of LP condition. | |
* This parameter can be: ENABLE or DISABLE. | |
* @retval None | |
*/ | |
void NVIC_SystemLPConfig(uint8_t LowPowerMode, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert_param(IS_NVIC_LP(LowPowerMode)); | |
assert_param(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
SCB->SCR |= LowPowerMode; | |
} | |
else | |
{ | |
SCB->SCR &= (uint32_t)(~(uint32_t)LowPowerMode); | |
} | |
} | |
/** | |
* @brief Configures the SysTick clock source. | |
* @param SysTick_CLKSource: specifies the SysTick clock source. | |
* This parameter can be one of the following values: | |
* @arg SysTick_CLKSource_HCLK_Div8: AHB clock divided by 8 selected as SysTick clock source. | |
* @arg SysTick_CLKSource_HCLK: AHB clock selected as SysTick clock source. | |
* @retval None | |
*/ | |
void SysTick_CLKSourceConfig(uint32_t SysTick_CLKSource) | |
{ | |
/* Check the parameters */ | |
assert_param(IS_SYSTICK_CLK_SOURCE(SysTick_CLKSource)); | |
if (SysTick_CLKSource == SysTick_CLKSource_HCLK) | |
{ | |
SysTick->CTRL |= SysTick_CLKSource_HCLK; | |
} | |
else | |
{ | |
SysTick->CTRL &= SysTick_CLKSource_HCLK_Div8; | |
} | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/******************* (C) COPYRIGHT 2012 STMicroelectronics *****END OF FILE****/ |