/*——————————————————————————
* 文 件 名：Init.c  
* 文件说明: 初始化源文件
*
* 当前版本：V8.0
* 作    者：ZL
* 开始日期：2013-12-30
*———————————————————————————*/

#include "Init.h"

void RCC_Init(void)
{
  /* Enable Clock Security System(CSS): this will generate an NMI exception
  when HSE clock fails */
  NVIC_InitTypeDef NVIC_InitStructure;
  NVIC_InitStructure.NVIC_IRQChannel = RCC_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  
  RCC_ClockSecuritySystemCmd(ENABLE);
}



void gpio_init(st_gpio_config ioconfig)
{
   GPIO_InitTypeDef  GPIO_InitStructure;  

  RCC_APB2PeriphClockCmd(ioconfig.GPIO_clk, ENABLE);

  GPIO_InitStructure.GPIO_Pin = ioconfig.GPIO_Pin;
  GPIO_InitStructure.GPIO_Mode = ioconfig.GPIO_mode;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init(ioconfig.GPIO_port, &GPIO_InitStructure);
}

/*—————————————————————————
* 函 数 名：NVIC_Init
* 输入参数：None
* 输出参数：None
* 返 回 值：None
* 功能说明：中断向量初始化
*——————————————————————————*/
#define FLASH_APP_ADDRESS                              0x08005000
void Nvic_Init(void)
{
//  NVIC_InitTypeDef NVIC_InitStructure;
 
  //NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);//重定义中断向量表的位置
  NVIC_SetVectorTable(NVIC_VectTab_FLASH,FLASH_APP_ADDRESS);
  //NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); 

  
  /* Enable and configure RCC global IRQ channel */
  /*
  NVIC_InitStructure.NVIC_IRQChannel = SysTick_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  */

  /* Enable and configure RCC global IRQ channel */
 
  
  /*
  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  
  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel7_IRQn; 
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = DMA2_Channel4_5_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);


  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 6;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 6;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  */
}

/*——————————————————————————
* 函 数 名：RCC_IRQHandler
* 输入参数：None
* 输出参数：None
* 返 回 值：None
* 功能说明：RCC中断服务函数
*——————————————————————————*/
void RCC_IRQHandler(void)
{
    if(RCC_GetITStatus(RCC_IT_HSERDY) != RESET)
    { 
        /* Clear HSERDY interrupt pending bit */
        RCC_ClearITPendingBit(RCC_IT_HSERDY);

        /* Check if the HSE clock is still available */
        if (RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET)
        { 
            /* Enable PLL: once the PLL is ready the PLLRDY interrupt is generated */ 
            RCC_PLLCmd(ENABLE);
        }
    }
  
    if(RCC_GetITStatus(RCC_IT_PLLRDY) != RESET)
    { 
        /* Clear PLLRDY interrupt pending bit */
        RCC_ClearITPendingBit(RCC_IT_PLLRDY);

        /* Check if the PLL is still locked */
        if (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) != RESET)
        { 
            /* Select PLL as system clock source */
            RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
        }
    }
}