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Diffstat (limited to 'stm32lib/src/stm32f10x_pwr.c')
| -rw-r--r-- | stm32lib/src/stm32f10x_pwr.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/stm32lib/src/stm32f10x_pwr.c b/stm32lib/src/stm32f10x_pwr.c new file mode 100644 index 0000000..e02594a --- /dev/null +++ b/stm32lib/src/stm32f10x_pwr.c @@ -0,0 +1,280 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : stm32f10x_pwr.c
+* Author : MCD Application Team
+* Version : V2.0.2
+* Date : 07/11/2008
+* Description : This file provides all the PWR firmware functions.
+********************************************************************************
+* 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.
+*******************************************************************************/
+
+/* 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_param(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_param(IS_FUNCTIONAL_STATE(NewState));
+
+ *(vu32 *) CR_PVDE_BB = (u32)NewState;
+}
+
+/*******************************************************************************
+* Function Name : PWR_PVDLevelConfig
+* Description : Configures the voltage threshold 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_param(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_param(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_param(IS_PWR_REGULATOR(PWR_Regulator));
+ assert_param(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_param(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_param(IS_PWR_CLEAR_FLAG(PWR_FLAG));
+
+ PWR->CR |= PWR_FLAG << 2;
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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