mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-21 14:01:56 -04:00
284 lines
11 KiB
C
284 lines
11 KiB
C
/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
|
|
* File Name : stm32f10x_pwr.c
|
|
* Author : MCD Application Team
|
|
* Date First Issued : 09/29/2006
|
|
* Description : This file provides all the PWR firmware functions.
|
|
********************************************************************************
|
|
* History:
|
|
* 04/02/2007: V0.2
|
|
* 02/05/2007: V0.1
|
|
* 09/29/2006: V0.01
|
|
********************************************************************************
|
|
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
|
|
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
|
*******************************************************************************/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "stm32f10x_pwr.h"
|
|
#include "stm32f10x_rcc.h"
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* --------- PWR registers bit address in the alias region ---------- */
|
|
#define PWR_OFFSET (PWR_BASE - PERIPH_BASE)
|
|
|
|
/* --- CR Register ---*/
|
|
/* Alias word address of DBP bit */
|
|
#define CR_OFFSET (PWR_OFFSET + 0x00)
|
|
#define DBP_BitNumber 0x08
|
|
#define CR_DBP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (DBP_BitNumber * 4))
|
|
|
|
/* Alias word address of PVDE bit */
|
|
#define PVDE_BitNumber 0x04
|
|
#define CR_PVDE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PVDE_BitNumber * 4))
|
|
|
|
/* --- CSR Register ---*/
|
|
/* Alias word address of EWUP bit */
|
|
#define CSR_OFFSET (PWR_OFFSET + 0x04)
|
|
#define EWUP_BitNumber 0x08
|
|
#define CSR_EWUP_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (EWUP_BitNumber * 4))
|
|
|
|
/* ------------------ PWR registers bit mask ------------------------ */
|
|
/* CR register bit mask */
|
|
#define CR_PDDS_Set ((u32)0x00000002)
|
|
#define CR_DS_Mask ((u32)0xFFFFFFFC)
|
|
#define CR_CWUF_Set ((u32)0x00000004)
|
|
#define CR_PLS_Mask ((u32)0xFFFFFF1F)
|
|
|
|
/* --------- Cortex System Control register bit mask ---------------- */
|
|
/* Cortex System Control register address */
|
|
#define SCB_SysCtrl ((u32)0xE000ED10)
|
|
/* SLEEPDEEP bit mask */
|
|
#define SysCtrl_SLEEPDEEP_Set ((u32)0x00000004)
|
|
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_DeInit
|
|
* Description : Deinitializes the PWR peripheral registers to their default
|
|
* reset values.
|
|
* Input : None
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_DeInit(void)
|
|
{
|
|
RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, ENABLE);
|
|
RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_BackupAccessCmd
|
|
* Description : Enables or disables access to the RTC and backup registers.
|
|
* Input : - NewState: new state of the access to the RTC and backup
|
|
* registers. This parameter can be: ENABLE or DISABLE.
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_BackupAccessCmd(FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert(IS_FUNCTIONAL_STATE(NewState));
|
|
|
|
*(vu32 *) CR_DBP_BB = (u32)NewState;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_PVDCmd
|
|
* Description : Enables or disables the Power Voltage Detector(PVD).
|
|
* Input : - NewState: new state of the PVD.
|
|
* This parameter can be: ENABLE or DISABLE.
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_PVDCmd(FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert(IS_FUNCTIONAL_STATE(NewState));
|
|
|
|
*(vu32 *) CR_PVDE_BB = (u32)NewState;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_PVDLevelConfig
|
|
* Description : Configures the value detected by the Power Voltage Detector(PVD).
|
|
* Input : - PWR_PVDLevel: specifies the PVD detection level
|
|
* This parameter can be one of the following values:
|
|
* - PWR_PVDLevel_2V2: PVD detection level set to 2.2V
|
|
* - PWR_PVDLevel_2V3: PVD detection level set to 2.3V
|
|
* - PWR_PVDLevel_2V4: PVD detection level set to 2.4V
|
|
* - PWR_PVDLevel_2V5: PVD detection level set to 2.5V
|
|
* - PWR_PVDLevel_2V6: PVD detection level set to 2.6V
|
|
* - PWR_PVDLevel_2V7: PVD detection level set to 2.7V
|
|
* - PWR_PVDLevel_2V8: PVD detection level set to 2.8V
|
|
* - PWR_PVDLevel_2V9: PVD detection level set to 2.9V
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_PVDLevelConfig(u32 PWR_PVDLevel)
|
|
{
|
|
u32 tmpreg = 0;
|
|
|
|
/* Check the parameters */
|
|
assert(IS_PWR_PVD_LEVEL(PWR_PVDLevel));
|
|
|
|
tmpreg = PWR->CR;
|
|
|
|
/* Clear PLS[7:5] bits */
|
|
tmpreg &= CR_PLS_Mask;
|
|
|
|
/* Set PLS[7:5] bits according to PWR_PVDLevel value */
|
|
tmpreg |= PWR_PVDLevel;
|
|
|
|
/* Store the new value */
|
|
PWR->CR = tmpreg;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_WakeUpPinCmd
|
|
* Description : Enables or disables the WakeUp Pin functionality.
|
|
* Input : - NewState: new state of the WakeUp Pin functionality.
|
|
* This parameter can be: ENABLE or DISABLE.
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_WakeUpPinCmd(FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert(IS_FUNCTIONAL_STATE(NewState));
|
|
|
|
*(vu32 *) CSR_EWUP_BB = (u32)NewState;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_EnterSTOPMode
|
|
* Description : Enters STOP mode.
|
|
* Input : - PWR_Regulator: specifies the regulator state in STOP mode.
|
|
* This parameter can be one of the following values:
|
|
* - PWR_Regulator_ON: STOP mode with regulator ON
|
|
* - PWR_Regulator_LowPower: STOP mode with
|
|
* regulator in low power mode
|
|
* - PWR_STOPEntry: specifies if STOP mode in entered with WFI or
|
|
* WFE instruction.
|
|
* This parameter can be one of the following values:
|
|
* - PWR_STOPEntry_WFI: enter STOP mode with WFI instruction
|
|
* - PWR_STOPEntry_WFE: enter STOP mode with WFE instruction
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_EnterSTOPMode(u32 PWR_Regulator, u8 PWR_STOPEntry)
|
|
{
|
|
u32 tmpreg = 0;
|
|
|
|
/* Check the parameters */
|
|
assert(IS_PWR_REGULATOR(PWR_Regulator));
|
|
assert(IS_PWR_STOP_ENTRY(PWR_STOPEntry));
|
|
|
|
/* Select the regulator state in STOP mode ---------------------------------*/
|
|
tmpreg = PWR->CR;
|
|
|
|
/* Clear PDDS and LPDS bits */
|
|
tmpreg &= CR_DS_Mask;
|
|
|
|
/* Set LPDS bit according to PWR_Regulator value */
|
|
tmpreg |= PWR_Regulator;
|
|
|
|
/* Store the new value */
|
|
PWR->CR = tmpreg;
|
|
|
|
/* Set SLEEPDEEP bit of Cortex System Control Register */
|
|
*(vu32 *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set;
|
|
|
|
/* Select STOP mode entry --------------------------------------------------*/
|
|
if(PWR_STOPEntry == PWR_STOPEntry_WFI)
|
|
{
|
|
/* Request Wait For Interrupt */
|
|
__WFI();
|
|
}
|
|
else
|
|
{
|
|
/* Request Wait For Event */
|
|
__WFE();
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_EnterSTANDBYMode
|
|
* Description : Enters STANDBY mode.
|
|
* Input : None
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_EnterSTANDBYMode(void)
|
|
{
|
|
/* Clear Wake-up flag */
|
|
PWR->CR |= CR_CWUF_Set;
|
|
|
|
/* Select STANDBY mode */
|
|
PWR->CR |= CR_PDDS_Set;
|
|
|
|
/* Set SLEEPDEEP bit of Cortex System Control Register */
|
|
*(vu32 *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set;
|
|
|
|
/* Request Wait For Interrupt */
|
|
__WFI();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_GetFlagStatus
|
|
* Description : Checks whether the specified PWR flag is set or not.
|
|
* Input : - PWR_FLAG: specifies the flag to check.
|
|
* This parameter can be one of the following values:
|
|
* - PWR_FLAG_WU: Wake Up flag
|
|
* - PWR_FLAG_SB: StandBy flag
|
|
* - PWR_FLAG_PVDO: PVD Output
|
|
* Output : None
|
|
* Return : The new state of PWR_FLAG (SET or RESET).
|
|
*******************************************************************************/
|
|
FlagStatus PWR_GetFlagStatus(u32 PWR_FLAG)
|
|
{
|
|
FlagStatus bitstatus = RESET;
|
|
|
|
/* Check the parameters */
|
|
assert(IS_PWR_GET_FLAG(PWR_FLAG));
|
|
|
|
if ((PWR->CSR & PWR_FLAG) != (u32)RESET)
|
|
{
|
|
bitstatus = SET;
|
|
}
|
|
else
|
|
{
|
|
bitstatus = RESET;
|
|
}
|
|
|
|
/* Return the flag status */
|
|
return bitstatus;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Function Name : PWR_ClearFlag
|
|
* Description : Clears the PWR's pending flags.
|
|
* Input : - PWR_FLAG: specifies the flag to clear.
|
|
* This parameter can be one of the following values:
|
|
* - PWR_FLAG_WU: Wake Up flag
|
|
* - PWR_FLAG_SB: StandBy flag
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void PWR_ClearFlag(u32 PWR_FLAG)
|
|
{
|
|
/* Check the parameters */
|
|
assert(IS_PWR_CLEAR_FLAG(PWR_FLAG));
|
|
|
|
PWR->CR |= PWR_FLAG << 2;
|
|
}
|
|
|
|
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
|