/**
  ******************************************************************************
  * @file    hw_config.c
  * @author  MCD Application Team
  * @version V3.4.0
  * @date    29-June-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 "hw_config.h"
#include "usb_lib.h"
#include "usb_desc.h"
#include "usb_pwr.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

ErrorStatus HSEStartUpStatus;
uint32_t ADC_ConvertedValueX = 0;
uint32_t ADC_ConvertedValueX_1 = 0;

/* 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.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
  /*!< 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(USB_USE_EXTERNAL_PULLUP)
  GPIO_InitTypeDef  GPIO_InitStructure;
#endif /* USB_USE_EXTERNAL_PULLUP */ 
  
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  /* Enable the SYSCFG module clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
#endif /* STM32L1XX_XD */ 
    
#if !defined(STM32L1XX_MD) && !defined(STM32L1XX_HD) && !defined(STM32L1XX_MD_PLUS)

  /* ADCCLK = PCLK2/8 */
  RCC_ADCCLKConfig(RCC_PCLK2_Div8);    
#endif /* STM32L1XX_XD */
  
  /* Configure the used GPIOs*/
  GPIO_Configuration();
  
#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 */
  
#if defined(STM32L1XX_MD) 
  /* Configure the LEFT button in EXTI mode */
  STM_EVAL_PBInit(Button_LEFT, Mode_EXTI);

  /* Configure the RIGHT button in EXTI mode */
  STM_EVAL_PBInit(Button_RIGHT, Mode_EXTI);
#else  
  /* Configure the KEY button in EXTI mode */
  STM_EVAL_PBInit(Button_KEY, Mode_EXTI);
#if !defined(STM32L1XX_HD)&& !defined(STM32L1XX_MD_PLUS)
  /* Configure the Tamper button in EXTI mode */
  STM_EVAL_PBInit(Button_TAMPER, Mode_EXTI);
#endif /* STM32L1XX_XD */
#endif  
  /* Additional EXTI configuration (configure both edges) */
  EXTI_Configuration();
  
  /* Configure the LEDs */
  STM_EVAL_LEDInit(LED1);
  STM_EVAL_LEDInit(LED2);
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);
 
  /* Configure the ADC*/
  ADC_Configuration();
}

/*******************************************************************************
* 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)
  /* Enable USB clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
  
#elif defined(STM32F10X_CL)  
  /* Select USBCLK source */
  RCC_OTGFSCLKConfig(RCC_OTGFSCLKSource_PLLVCO_Div3);

  /* Enable the USB clock */ 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_OTG_FS, ENABLE) ;
#else
  /* Select USBCLK source */
  RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
  
  /* Enable the USB clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
#endif /* STM32F10X_CL */
}

/*******************************************************************************
* 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;
  }
}

/*******************************************************************************
* 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 = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
#elif defined(STM32F10X_CL) 
  /* Enable the USB Interrupts */
  NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);   
#else
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif /* STM32L1XX_XD */
  
  /* Enable the EXTI9_5 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_Init(&NVIC_InitStructure);
    
  /* Enable the EXTI15_10 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_Init(&NVIC_InitStructure);
  
  /* Enable the DMA1 Channel1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_Init(&NVIC_InitStructure);
}

/*******************************************************************************
* 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;
  }  

#elif defined(STM32F10X_CL)  
  if (NewState != DISABLE)
  {
    USB_DevConnect();
  }
  else
  {
    USB_DevDisconnect();
  }
#else 
  if (NewState != DISABLE)
  {
    GPIO_ResetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
  else
  {
    GPIO_SetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
#endif /* STM32L1XX_XD */
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description    : Configures the different GPIO ports.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIO_DISCONNECT | 
                         RCC_AHBPeriph_GPIO_IOAIN , ENABLE);   
  
#else  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_DISCONNECT | 
                         RCC_APB2Periph_GPIO_IOAIN , ENABLE);  
  
 #ifndef USE_STM3210C_EVAL
  /* USB_DISCONNECT used as 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);
 #endif /* USE_STM3210C_EVAL */ 
#endif /* STM32L1XX_XD */ 
  
  /* Configure Potentiometer IO as analog input */
  GPIO_InitStructure.GPIO_Pin = GPIO_IOAIN_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIO_IOAIN, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name : EXTI_Configuration.
* Description   : Configure the EXTI lines for Key and Tamper push buttons.
* Input         : None.
* Output        : None.
* Return value  : The direction value.
*******************************************************************************/
void EXTI_Configuration(void)
{
  EXTI_InitTypeDef EXTI_InitStructure;

#if defined (USE_STM32L152_EVAL)
  /* Configure RIGHT EXTI line to generate an interrupt on rising & falling edges */  
  EXTI_InitStructure.EXTI_Line = RIGHT_BUTTON_EXTI_LINE;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the RIGHT EXTI line pending bit */
  EXTI_ClearITPendingBit(RIGHT_BUTTON_EXTI_LINE);
   
  /* Configure LEFT EXTI Line to generate an interrupt rising & falling edges */  
  EXTI_InitStructure.EXTI_Line = LEFT_BUTTON_EXTI_LINE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the LEFT EXTI line pending bit */
  EXTI_ClearITPendingBit(LEFT_BUTTON_EXTI_LINE);
  
#else    
  /* Configure Key EXTI line to generate an interrupt on rising & falling edges */  
  EXTI_InitStructure.EXTI_Line = KEY_BUTTON_EXTI_LINE;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the Key EXTI line pending bit */
  EXTI_ClearITPendingBit(KEY_BUTTON_EXTI_LINE);
   
  /* Configure Tamper EXTI Line to generate an interrupt rising & falling edges */  
#ifndef USE_STM32L152D_EVAL
  EXTI_InitStructure.EXTI_Line = TAMPER_BUTTON_EXTI_LINE;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Clear the Tamper EXTI line pending bit */
  EXTI_ClearITPendingBit(TAMPER_BUTTON_EXTI_LINE);
#endif 
#endif /* USE_STM32L152_EVAL */  
}

/*******************************************************************************
* Function Name : ADC_Configuration.
* Description   : Configure the ADC and DMA.
* Input         : None.
* Output        : None.
* Return value  : The direction value.
*******************************************************************************/
void ADC_Configuration(void)
{
  ADC_InitTypeDef ADC_InitStructure;
  DMA_InitTypeDef DMA_InitStructure;

  /* Enable DMA1 clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

  /* Enable ADC1 clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    
  /* DMA1 channel1 configuration ---------------------------------------------*/
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_ConvertedValueX;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 1;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA1_Channel1, &DMA_InitStructure);
   
  /* Enable DMA1 channel1 */
  DMA_Cmd(DMA1_Channel1, ENABLE);
  
  /* Enable the DMA1 Channel1 Transfer complete interrupt */
  DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);

#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  /* Enable the HSI for the ADC operations */
  RCC_HSICmd(ENABLE);
    
  /* ADC1 configuration ------------------------------------------------------*/
  ADC_StructInit(&ADC_InitStructure);
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel18 configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_Channel_18, 1, ADC_SampleTime_384Cycles);

#if defined (USE_STM32L152D_EVAL)
  /* ADC1 regular channel31 configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_Channel_31, 1, ADC_SampleTime_384Cycles);
#endif
  
  /* Enable the request after last transfer for DMA Circular mode */
  ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
  
  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);
  
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);
  
#else
  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_AIN_CHANNEL, 1, ADC_SampleTime_55Cycles5);

  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);
  
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Enable ADC1 reset calibration register */   
  ADC_ResetCalibration(ADC1);
  /* Check the end of ADC1 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC1));

  /* Start ADC1 calibration */
  ADC_StartCalibration(ADC1);
  
  /* Check the end of ADC1 calibration */
  while(ADC_GetCalibrationStatus(ADC1));  
#endif /* STM32L1XX_XD */ 
}

/*******************************************************************************
* 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;

#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
  Device_Serial0 = *(uint32_t*)(0x1FF80050);
  Device_Serial1 = *(uint32_t*)(0x1FF80054);
  Device_Serial2 = *(uint32_t*)(0x1FF80064);
#else   
  Device_Serial0 = *(__IO uint32_t*)(0x1FFFF7E8);
  Device_Serial1 = *(__IO uint32_t*)(0x1FFFF7EC);
  Device_Serial2 = *(__IO uint32_t*)(0x1FFFF7F0);
#endif /* STM32L1XX_XD */ 
  
  Device_Serial0 += Device_Serial2;

  if (Device_Serial0 != 0)
  {
    IntToUnicode (Device_Serial0, &CustomHID_StringSerial[2] , 8);
    IntToUnicode (Device_Serial1, &CustomHID_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;
  }
}
#ifdef STM32F10X_CL
/*******************************************************************************
* Function Name  : USB_OTG_BSP_uDelay.
* Description    : provide delay (usec).
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_OTG_BSP_uDelay (const uint32_t usec)
{
  RCC_ClocksTypeDef  RCC_Clocks;  

  /* Configure HCLK clock as SysTick clock source */
  SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
  
  RCC_GetClocksFreq(&RCC_Clocks);
  
  SysTick_Config(usec * (RCC_Clocks.HCLK_Frequency / 1000000));  
  
  SysTick->CTRL  &= ~SysTick_CTRL_TICKINT_Msk ;
  
  while (!(SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk));
}
#endif
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
