/**
  ******************************************************************************
  * @file    hw_config.c
  * @author  MCD Application Team
  * @version V4.0.0
  * @date    21-January-2013
  * @brief   Hardware Configuration & Setup
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2013 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 "hw_config.h"
#include "dfu_mal.h"
#include "usb_lib.h"
#include "usb_desc.h"
#include "usb_pwr.h"


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;
EXTI_InitTypeDef EXTI_InitStructure;
/* Extern variables ----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len);
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name  : Set_System.
* Description    : Configures Main system clocks & power.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
#if !defined(STM32L1XX_MD) && !defined(STM32L1XX_HD) && !defined (STM32L1XX_MD_PLUS)
  GPIO_InitTypeDef GPIO_InitStructure;
#endif /* STM32L1XX_XD*/
  
#if defined(USB_USE_EXTERNAL_PULLUP)
  GPIO_InitTypeDef  GPIO_InitStructure;
#endif /* USB_USE_EXTERNAL_PULLUP */ 
  
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f10x_xx.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f10x.c file
     */ 
  
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS) || defined(STM32F37X) || defined(STM32F30X)
  /* Enable the SYSCFG module clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
#endif /* STM32L1XX_XD */ 
   
FLASH_Unlock();
  
#ifdef USE_STM3210E_EVAL
  /* Enable the FSMC Clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
#endif /* USE_STM3210E_EVAL */
#if defined (USE_STM3210E_EVAL)
  /* Enable the FSMC Clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
#endif /* USE_STM3210E_EVAL */
    
#if defined(STM32F37X) || defined(STM32F30X)
  /* Enable the USB disconnect GPIO clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIO_DISCONNECT, ENABLE);

 /*Set PA11,12 as IN - USB_DM,DP*/
  
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
    
  /*SET PA11,12 for USB: USB_DM,DP*/
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_14);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_14);
 
  /* USB_DISCONNECT used as USB pull-up */
  GPIO_InitStructure.GPIO_Pin = USB_DISCONNECT_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(USB_DISCONNECT, &GPIO_InitStructure);
  
 /*Output low level on USB_Disconnect Pin to enable 1.5k ohm pull-up resistor*/
  GPIO_WriteBit(USB_DISCONNECT, USB_DISCONNECT_PIN, Bit_RESET);

#endif /* STM32F37X && STM32F30X */

#if !defined(STM32L1XX_MD) && !defined(STM32L1XX_HD) && !defined(STM32L1XX_MD_PLUS)  && !defined(STM32F37X) && !defined(STM32F30X)
  /* Enable "DISCONNECT" GPIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_DISCONNECT, ENABLE);

  /* Configure USB pull-up */
  GPIO_InitStructure.GPIO_Pin = USB_DISCONNECT_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
  GPIO_Init(USB_DISCONNECT, &GPIO_InitStructure);

  /* Disable the USB connection till initialization phase end */  
  USB_Cable_Config(DISABLE);
#endif /* STM32L1XX_XD */

#if defined(USB_USE_EXTERNAL_PULLUP)
  /* Enable the USB disconnect GPIO clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIO_DISCONNECT, ENABLE);

  /* USB_DISCONNECT used as USB pull-up */
  GPIO_InitStructure.GPIO_Pin = USB_DISCONNECT_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(USB_DISCONNECT, &GPIO_InitStructure);  
#endif /* USB_USE_EXTERNAL_PULLUP */
  
  /* Init the media interface */
  MAL_Init();
  USB_Cable_Config(ENABLE);
  
      /* Configure the EXTI line 18 connected internally to the USB IP */
  EXTI_ClearITPendingBit(EXTI_Line18);
  EXTI_InitStructure.EXTI_Line = EXTI_Line18; 
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
}

/*******************************************************************************
* Function Name  : Set_USBClock.
* Description    : Configures USB Clock input (48MHz).
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Set_USBClock(void)
{
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
   
#else 
  /* Select USBCLK source */
  RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
  
  /* Enable the USB clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
#endif /* STM32L1XX_MD */
}

/*******************************************************************************
* Function Name  : Enter_LowPowerMode.
* Description    : Power-off system clocks and power while entering suspend mode.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Enter_LowPowerMode(void)
{
  /* Set the device state to suspend */
  bDeviceState = SUSPENDED;
}

/*******************************************************************************
* Function Name  : Leave_LowPowerMode.
* Description    : Restores system clocks and power while exiting suspend mode.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Leave_LowPowerMode(void)
{
  DEVICE_INFO *pInfo = &Device_Info;

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

/*******************************************************************************
* Function Name  : USB_Cable_Config.
* Description    : Software Connection/Disconnection of USB Cable.
* Input          : NewState: new state.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_Cable_Config (FunctionalState NewState)
{
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  if (NewState != DISABLE)
  {
    STM32L15_USB_CONNECT;
  }
  else
  {
    STM32L15_USB_DISCONNECT;
  }  
#else 
  if (NewState != DISABLE)
  {
    GPIO_ResetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
  else
  {
    GPIO_SetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
#endif /* STM32L1XX_XD */
}

/*******************************************************************************
* Function Name  : DFU_Button_Config.
* Description    : Configures the DFU selector Button to enter DFU Mode.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void DFU_Button_Config(void)
{  
#if defined (USE_STM32L152_EVAL)
  /* Configure "DFU enter" button */
  STM_EVAL_PBInit(Button_UP, Mode_GPIO);  
#else  
  /* Configure "DFU enter" button */
  STM_EVAL_PBInit(Button_KEY, Mode_GPIO);
#endif /* USE_STM32L152_EVAL */
}

/*******************************************************************************
* Function Name  : DFU_Button_Read.
* Description    : Reads the DFU selector Button to enter DFU Mode.
* Input          : None.
* Output         : None.
* Return         : Status
*******************************************************************************/
uint8_t DFU_Button_Read (void)
{
#if defined (USE_STM32L152_EVAL) 
  return STM_EVAL_PBGetState(Button_UP); 
#elif defined (USE_STM32L152D_EVAL) 
  return !STM_EVAL_PBGetState(Button_KEY); 
#else    
  return STM_EVAL_PBGetState(Button_KEY);  
#endif /* USE_STM32L152_EVAL */  
}

/*******************************************************************************
* Function Name  : USB_Interrupts_Config.
* Description    : Configures the USB interrupts.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_Interrupts_Config(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* 2 bit for pre-emption priority, 2 bits for subpriority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);  
  
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
    /* Enable the USB Wake-up interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USB_FS_WKUP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
#elif defined(STM32F37X)
  /* Enable the USB interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  /* Enable the USB Wake-up interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USBWakeUp_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
#else 
  /* Enable the USB interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
    /* Enable the USB Wake-up interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USBWakeUp_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
#endif /* STM32L1XX_XD */
}

/*******************************************************************************
* Function Name  : Reset_Device.
* Description    : Reset the device.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Reset_Device(void)
{
  USB_Cable_Config(DISABLE);
  NVIC_SystemReset();
}

/*******************************************************************************
* Function Name  : Get_SerialNum.
* Description    : Create the serial number string descriptor.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Get_SerialNum(void)
{
  uint32_t Device_Serial0, Device_Serial1, Device_Serial2;

  Device_Serial0 = *(uint32_t*)ID1;
  Device_Serial1 = *(uint32_t*)ID2;
  Device_Serial2 = *(uint32_t*)ID3;   

  Device_Serial0 += Device_Serial2;

  if (Device_Serial0 != 0)
  {
    IntToUnicode (Device_Serial0, &DFU_StringSerial[2] , 8);
    IntToUnicode (Device_Serial1, &DFU_StringSerial[18], 4);
  }
}

/*******************************************************************************
* Function Name  : HexToChar.
* Description    : Convert Hex 32Bits value into char.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len)
{
  uint8_t idx = 0;
  
  for( idx = 0 ; idx < len ; idx ++)
  {
    if( ((value >> 28)) < 0xA )
    {
      pbuf[ 2* idx] = (value >> 28) + '0';
    }
    else
    {
      pbuf[2* idx] = (value >> 28) + 'A' - 10; 
    }
    
    value = value << 4;
    
    pbuf[ 2* idx + 1] = 0;
  }
}

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