hw_config.c

STM32F103 USB例子程序包括大容量存储、USB转串口

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : hw_config.c
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : Hardware Configuration & Setup
********************************************************************************
* 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 "stm32f10x_it.h"
#include "usb_lib.h"
#include "usb_prop.h"
#include "usb_desc.h"
#include "hw_config.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define TIM2ARRValue    3273 /* 22KHz = 72MHz / 3273 */

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;

/* Extern variables ----------------------------------------------------------*/
/* 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;
  
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
    /* Enable Prefetch Buffer */
    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

    /* Flash 2 wait state */
    FLASH_SetLatency(FLASH_Latency_2);
 
    /* HCLK = SYSCLK */
    RCC_HCLKConfig(RCC_SYSCLK_Div1); 
  
    /* PCLK2 = HCLK */
    RCC_PCLK2Config(RCC_HCLK_Div1); 

    /* PCLK1 = HCLK/2 */
    RCC_PCLK1Config(RCC_HCLK_Div2);

    /* PLLCLK = 8MHz * 9 = 72 MHz */
    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

    /* Enable PLL */ 
    RCC_PLLCmd(ENABLE);

    /* Wait till PLL is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
    {
    }

    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

    /* Wait till PLL is used as system clock source */
    while(RCC_GetSYSCLKSource() != 0x08)
    {
    }
  }

  /* Enable GPIOB, GPIOD, TIM2 & TIM4 clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD , ENABLE);
  
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM4 , ENABLE);
  
  /* PD.09 used as USB pull-up */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : Set_USBClock
* Description    : Configures USB Clock input (48MHz)
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_USBClock(void)
{
  /* USBCLK = PLLCLK/1.5 */
  RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);

  /* Enable USB clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
}

/*******************************************************************************
* Function Name  : Enter_LowPowerMode
* Description    : Power-off system clocks and power while entering suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Enter_LowPowerMode(void)
{
}

/*******************************************************************************
* Function Name  : Leave_LowPowerMode
* Description    : Restores system clocks and power while exiting suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Leave_LowPowerMode(void)
{
}

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

#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  /* Enable and configure the priority of the USB_LP IRQ Channel*/
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN_RX0_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Enable and configure the priority of the USB_HP IRQ Channel*/
  NVIC_InitStructure.NVIC_IRQChannel = USB_HP_CAN_TX_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Enable the TIM2 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

/*******************************************************************************
* 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(GPIOD, GPIO_Pin_9);    
  }
  else
  {
    GPIO_SetBits(GPIOD, GPIO_Pin_9); 
  }
}

/*******************************************************************************
* Function Name  : Speaker_Timer_Config
* Description    : Configure and enable the timer
* Input          : None.
* Return         : None.
*******************************************************************************/
void Speaker_Timer_Config(void)
{
  /* Peripherals InitStructure define */
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_OCInitTypeDef        TIM_OCInitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;


  /* Configure PB.08 as alternate function (TIM4_OC3) */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* TIM4 configuration */
  TIM_TimeBaseStructure.TIM_Prescaler = 0x00; /* TIM4CLK = 72 MHz */
  TIM_TimeBaseStructure.TIM_Period = 0xFF;   /* PWM frequency : 281.250KHz*/
  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
  /* TIM4's Channel3 in PWM1 mode */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_Channel = TIM_Channel_3;
  TIM_OCInitStructure.TIM_Pulse = 0x7F;  /* Duty cycle: 50%*/
  TIM_OCInit(TIM4, &TIM_OCInitStructure);
  TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);

  /* TIM2 configuration */
  TIM_TimeBaseStructure.TIM_Period = TIM2ARRValue;
  TIM_TimeBaseStructure.TIM_Prescaler = 0x00;    /* TIM2CLK = 72 MHz */
  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  /* Output Compare Inactive Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Inactive;
  TIM_OCInitStructure.TIM_Channel = TIM_Channel_1;
  TIM_OCInitStructure.TIM_Pulse = 0x0;
  TIM_OCInit(TIM2, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable);

  /* Start TIM4 */
  TIM_Cmd(TIM4, ENABLE);

  /* Start TIM2 */
  TIM_Cmd(TIM2, ENABLE);

  /* Enable TIM2 update interrupt */
  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
}

/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/