hw_config.c

/**
  ******************************************************************************
  * @file    hw_config.c
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    20-September-2012
  * @brief   Hardware Configuration & Setup.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f30x.h"
#include "hw_config.h"
#include "usb_lib.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "usb_lib.h"
#include "platform_config.h"
#include "stm32f3_discovery.h"

/** @addtogroup STM32F3-Discovery_Demo
  * @{
  */
  
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;
/* Extern variables ----------------------------------------------------------*/
extern __IO uint8_t PrevXferComplete;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Configures all IOs as AIN to reduce the power consumption.
  * @param  None
  * @retval None
  */
void GPIO_AINConfig(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
 
  /* Configure all GPIO port pins in Analog Input mode (floating input trigger OFF) */

  /* Enable all GPIOs Clock*/
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ALLGPIO, ENABLE);  
  
 /* Configure all GPIO port pins in Analog Input mode (floating input trigger OFF) */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  GPIO_Init(GPIOD, &GPIO_InitStructure);
  GPIO_Init(GPIOE, &GPIO_InitStructure);
   
  /* Disable all GPIOs Clock*/
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ALLGPIO, DISABLE); 

}

/**
  * @brief  Power-off system clocks and power while entering suspend mode.
  * @param  None
  * @retval None
  */
void Enter_LowPowerMode(void)
{
  /* Set the device state to suspend */
  bDeviceState = SUSPENDED;

  /* Clear EXTI Line18 pending bit */
  EXTI_ClearITPendingBit(USER_BUTTON_EXTI_LINE);
} 

/**
  * @brief  Restores system clocks and power while exiting suspend mode.
  * @param  None
  * @retval None
  */
void Leave_LowPowerMode(void)
{
  DEVICE_INFO *pInfo = &Device_Info;

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();


  /* Wait till HSE is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET)
  {}
   
  /* Enable PLL1 */
  RCC_PLLCmd(ENABLE);

  /* Wait till PLL1 is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
  {}

  /* Select PLL as system clock source */
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

  /* Wait till PLL is used as system clock source */ 
  while (RCC_GetSYSCLKSource() != 0x08)
  {}  

 /* Set the device state to the correct state */
  if (pInfo->Current_Configuration != 0)
  {
    /* Device configured */
    bDeviceState = CONFIGURED;
  }
  else
  {
    bDeviceState = ATTACHED;
  }
}

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/