/**
  ******************************************************************************
  * @file    hw_config.c
  * @author  MCD Application Team
  * @version V4.1.0
  * @date    26-May-2017
  * @brief   Hardware Configuration & Setup
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/

#include "stm32_it.h"
#include "usb_lib.h"
#include "usb_prop.h"
#include "usb_desc.h"
#include "hal.h"
#include "usb_pwr.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;
EXTI_InitTypeDef EXTI_InitStructure;
extern __IO uint32_t packet_sent;
extern __IO uint8_t Send_Buffer[MIDI_CDC_DEV_DATA_SIZE] ;
extern __IO  uint32_t packet_receive;
extern __IO uint8_t Receive_length;

uint8_t Receive_Buffer[64];
uint32_t Send_length;
/* Extern variables ----------------------------------------------------------*/

extern LINE_CODING linecoding;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name  : Set_System
* Description    : Configures Main system clocks & power
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;  
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32xxx.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32xxx.c file
     */ 
  
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD) || defined(STM32F37X) || defined(STM32F303xC) || defined(STM32F303xE) || defined(STM32F302x8)
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

#else /* defined(STM32F10X_HD) || defined(STM32F10X_MD) defined(STM32F10X_XL)*/
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
#endif
  
  /********************************************/
  /*  Configure USB DM/DP pins                */
  /********************************************/
  
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)
  
  /* Configure USB DM/DP pin. This is optional, and maintained only for user guidance.
  For the STM32L products there is no need to configure the PA12/PA11 pins couple 
  as Alternate Function */
  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  
#elif defined(STM32F10X_HD) || defined(STM32F10X_MD)  || defined(STM32F10X_XL)
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  
  /* Enable all GPIOs Clock*/
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ALLGPIO, ENABLE);

#else /* defined(STM32F37X) || defined(STM32F303xC) */
  
  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);
  
#endif 

#if ! defined(USE_NUCLEO)  
  /********************************************/
  /* Enable the USB PULL UP                   */
  /********************************************/
#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)
  
  /* Enable integrated STM32L15xx internal pull up 
  Enable the SYSCFG module clock*/
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  
#elif defined(STM32F10X_HD) || defined(STM32F10X_MD)  || defined(STM32F10X_XL)
  
  /* 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);
  
  /* Enable the USB disconnect GPIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_DISCONNECT, ENABLE);
  
#else  /* defined(STM32F37X) || defined(STM32F303xC) */
  
  /* 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_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);
  
#endif
#endif /* USE_NUCLEO */    
#ifdef USB_LOW_PWR_MGMT_SUPPORT
  
  /**********************************************************************/
  /*  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);

#endif  /* USB_LOW_PWR_MGMT_SUPPORT */
}

/*******************************************************************************
* Function Name  : Set_USBClock
* Description    : Configures USB Clock input (48MHz)
* Input          : 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);
  
#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  : Leave_LowPowerMode
* Description    : Restores system clocks and power while exiting suspend mode
* Input          : 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_Interrupts_Config
* Description    : Configures the USB interrupts
* Input          : None.
* Return         : None.
*******************************************************************************/
void USB_Interrupts_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

  /* 4 bits for pre-emption priority, 0 bit for subpriority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
 
#if defined(STM32L1XX_MD)|| defined(STM32L1XX_HD) || defined(STM32L1XX_MD_PLUS)
  /* 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 = USB_FS_WKUP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  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 = 1;
  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 = 1;
  NVIC_Init(&NVIC_InitStructure);   
#endif
}

/*******************************************************************************
* Function Name  : USB_Cable_Config
* Description    : Software Connection/Disconnection of USB Cable
* Input          : None.
* Return         : Status
*******************************************************************************/
void USB_Cable_Config (FunctionalState NewState)
{
  if (NewState != DISABLE)
  {
    GPIO_ResetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
  else
  {
    GPIO_SetBits(USB_DISCONNECT, USB_DISCONNECT_PIN);
  }
}

/*******************************************************************************
* Function Name  : HAL_GetHwSerialNum.
* Description    : Create the serial number string descriptor.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
uint64_t HAL_GetHwSerialNum(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;
  return (uint64_t)Device_Serial0|((uint64_t)Device_Serial1<<32);
}



/*******************************************************************************
* Function Name  : Send DATA .
* Description    : send the data received from the STM32 to the PC through USB  
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
uint32_t CDC_Send_DATA (uint8_t *ptrBuffer, uint8_t Send_length)
{
  /*if max buffer is Not reached*/
  if(Send_length < MIDI_CDC_DEV_DATA_SIZE)     
  {
    /*Sent flag*/
    packet_sent = 0;
    /* send  packet to PMA*/
    UserToPMABufferCopy((unsigned char*)ptrBuffer, ENDP1_TXADDR, Send_length);
    SetEPTxCount(ENDP1, Send_length);
    SetEPTxValid(ENDP1);
  }
  else
  {
    return 0;
  } 
  return 1;
}

/*******************************************************************************
* Function Name  : Receive DATA .
* Description    : receive the data from the PC to STM32 and send it through USB
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
uint32_t CDC_Receive_DATA(void)
{ 
  /*Receive flag*/
  packet_receive = 0;
  SetEPRxValid(ENDP3); 
  SetEPRxValid(ENDP4); 
  return 1 ;
}

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