hw_config.c

基于ＳＴ ＡＲＭ处理器的ＵＳＢ通信的演示

/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
* File Name          : main.c
* Author             : wuyuhuai
* Date First Issued  : 4/40/2008 : V1.0
* Description        : str training demo main file
********************************************************************************
* History:
* 10/01/2006 : V1.0
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "rccu.h"
#include "71x_lib.h"
#include "hw_config.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

/* External variables --------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : Set_System
* Description    : Configures Main system clocks & power
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
  u32 Tmp;
  RCCU_Div2Config(DISABLE);
  /*Configure MCLK = RCLK*/
  RCCU_MCLKConfig ( RCCU_DEFAULT );
  /* Configure FCLK = RCLK /2*/
  RCCU_FCLKConfig ( RCCU_DEFAULT);  /* APB1 Clock (USB)*/
  RCCU_PCLKConfig ( RCCU_DEFAULT );
  /*Configure the PLL1 ( * 12 , / 2 )*/
  RCCU_PLL1Config ( RCCU_PLL1_Mul_12 , RCCU_Div_1);
  /* Wait PLL to lock*/
  for ( Tmp = 0x7f ; Tmp> 0; Tmp--)
  /* Select PLL1_Output as RCLK clock*/
  RCCU_RCLKSourceConfig ( RCCU_PLL1_Output );
}
/*******************************************************************************
* Function Name  : Set_USBClock
* Description    : Configures USB Clock input (48MHz)
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_USBClock(void)
{

    RCCU_PLL1Config ( RCCU_PLL1_Mul_16 , RCCU_Div_2 ) ;
    RCCU_PCLKConfig (RCCU_RCLK_8);             // PCLK2=RCLK/8
    RCCU_RCLKSourceConfig ( RCCU_PLL1_Output ) ;

  /* Configure the PLL2 ( * 12 , / 1 ) assuming HCLK=4MHz */
   RCCU_PLL2Config (RCCU_PLL2_Mul_12,RCCU_Div_1);
   PCU->PLL2CR  = 0x81D0;
}
/*******************************************************************************
* Function Name  : Enter_LowPowerMode
* Description    : Power-off system clocks and power while entering suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Enter_LowPowerMode(void)
{
      /*  RCCU->CCR  |= RCCU_CKAF_SEL_Mask;
          RCCU->CFR    &=~0x1;                  //PLL not sys clock
          RCCU->PLL1CR &=~0x80;                 //Free running off
          GPIO_Config(GPIO0,0x4010,GPIO_OUT_PP);
          GPIO_Config(GPIO1,0x8400,GPIO_OUT_PP);
          GPIO_WordWrite(GPIO0,0x0);

          FLASHR->CR0|=0x8000;                  //disable the flash during the LPWFI
          PCU->PWRCR  |=0x8000;                 //disable MVR during WFI mode
          PCU->PWRCR  |=0x0010;

          RCCU->CCR  |=0x2;                     //select the 32KHz as peripherl clock during LPWFI
          RCCU->CCR  |=0x1;

          GPIO_Config (GPIO0, 0x1000,GPIO_HI_AIN_TRI);    //Disable External oscillator P0.12

          RCCU->SMR &=0xFE;                               // enter LPWFI*/
}
/*******************************************************************************
* Function Name  : Leave_LowPowerMode
* Description    : Restores system clocks and power while exiting suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Leave_LowPowerMode(void)
{
  /* GPIO_BitWrite(GPIO0,12,0);   */             /*Enable External oscillator*/
  /* GPIO_Config(GPIO0,0x1000,GPIO_OUT_PP);

   Set_System();
   Set_USBClock();*/
}
/*******************************************************************************
* Function Name  : USB_Interrupts_Config
* Description    : Configures the USB interrupts
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_Interrupts_Config(void)
{
  EIC_IRQChannelPriorityConfig(USBHP_IRQChannel,3);
  EIC_IRQChannelPriorityConfig(USBLP_IRQChannel,4);
  EIC_IRQChannelConfig(USBLP_IRQChannel,ENABLE);
  EIC_IRQChannelConfig(USBHP_IRQChannel,ENABLE);
  EIC_IRQConfig(ENABLE);
}

/*******************************************************************************
* Function Name  : Led_Config
* Description    :
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_Config(void)
{
  GPIO_Config (GPIO2, 0x0600, GPIO_OUT_PP);
}
/*******************************************************************************
* Function Name  : Led_Power_ON
* Description    :
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_Power_ON(void)
{
  GPIO_BitWrite(GPIO2, 10, 0x01);
}
/*******************************************************************************
* Function Name  : Led_Power_OFF
* Description    :
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_Power_OFF(void)
{
  GPIO_BitWrite(GPIO2, 10, 0x00);
}
/*******************************************************************************
* Function Name  : Led_RW_ON
* Description    :
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_RW_ON(void)
{
  GPIO_BitWrite(GPIO2, 9, 0x01);
}
/*******************************************************************************
* Function Name  : Led_RW_OFF
* Description    :
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_RW_OFF(void)
{
  GPIO_BitWrite(GPIO2, 9, 0x00);
}
/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/