main.c

STM32所有外设例子程序（需自己修改）

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : main.c
* Author             : MCD Application Team
* Version            : V2.0.1
* Date               : 06/13/2008
* Description        : Main program body.
********************************************************************************
* THE PRESENT FIRMWARE 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 FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "fsmc_sram.h"

/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define BufferSize  32
#define Bank1_SRAM3_ADDR    ((u32)0x68000000)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
DMA_InitTypeDef    DMA_InitStructure;
ErrorStatus HSEStartUpStatus;
volatile TestStatus TransferStatus;
uc32 SRC_Const_Buffer[BufferSize]= {0x01020304,0x05060708,0x090A0B0C,0x0D0E0F10,
                            0x11121314,0x15161718,0x191A1B1C,0x1D1E1F20,
                            0x21222324,0x25262728,0x292A2B2C,0x2D2E2F30,
                            0x31323334,0x35363738,0x393A3B3C,0x3D3E3F40,
                            0x41424344,0x45464748,0x494A4B4C,0x4D4E4F50,
                            0x51525354,0x55565758,0x595A5B5C,0x5D5E5F60,
                            0x61626364,0x65666768,0x696A6B6C,0x6D6E6F70,
                            0x71727374,0x75767778,0x797A7B7C,0x7D7E7F80};
u8 DST_Buffer[4*BufferSize], Idx = 0;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void NVIC_Configuration(void);
void Delay(vu32 nCount);
TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength);

/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : main
* Description    : Main program.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System Clocks Configuration */
  RCC_Configuration();   

  /* NVIC Configuration */
  NVIC_Configuration();

  /* FSMC for SRAM and SRAM pins configuration */
  FSMC_SRAM_Init();

  /* Write to FSMC -----------------------------------------------------------*/
  /* DMA2 channel5 configuration */
  DMA_DeInit(DMA2_Channel5);
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SRC_Const_Buffer;
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)Bank1_SRAM3_ADDR;    
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 32;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;
  DMA_Init(DMA2_Channel5, &DMA_InitStructure);

  /* Enable DMA2 channel5 */
  DMA_Cmd(DMA2_Channel5, ENABLE);

  /* Check if DMA2 channel5 transfer is finished */
  while(!DMA_GetFlagStatus(DMA2_FLAG_TC5));

  /* Clear DMA2 channel5 transfer complete flag bit */
  DMA_ClearFlag(DMA2_FLAG_TC5);

  /* Read from FSMC ----------------------------------------------------------*/
  /* Destination buffer initialization */ 
  for(Idx=0; Idx<128; Idx++) DST_Buffer[Idx]=0;

  /* DMA1 channel3 configuration */
  DMA_DeInit(DMA1_Channel3);
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)Bank1_SRAM3_ADDR;  
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)DST_Buffer;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 128;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;
  DMA_Init(DMA1_Channel3, &DMA_InitStructure);

  /* Enable DMA1 channel3 */
  DMA_Cmd(DMA1_Channel3, ENABLE);

  /* Check if DMA1 channel3 transfer is finished */
  while(!DMA_GetFlagStatus(DMA1_FLAG_TC3));

  /* Clear DMA1 channel3 transfer complete flag bit */
  DMA_ClearFlag(DMA1_FLAG_TC3);

  /* Check if the transmitted and received data are equal */
  TransferStatus = Buffercmp(SRC_Const_Buffer, (u32*)DST_Buffer, BufferSize);
  /* TransferStatus = PASSED, if the transmitted and received data 
     are the same */
  /* TransferStatus = FAILED, if the transmitted and received data 
     are different */

  while (1)								
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void RCC_Configuration(void)
{   
  /* 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 peripheral clocks --------------------------------------------------*/
  /* DMA1 and DMA2 clock enable */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2, ENABLE);
  /* FSMC clock enable */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description    : Configures Vector Table base location.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#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
}

/*******************************************************************************
* Function Name  : Delay
* Description    : Inserts a delay time.
* Input          : nCount: specifies the delay time length.
* Output         : None
* Return         : None
*******************************************************************************/
void Delay(vu32 nCount)
{
  for(; nCount != 0; nCount--);
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description    : Compares two buffers.
* Input          : - pBuffer, pBuffer1: buffers to be compared.
*                : - BufferLength: buffer's length
* Output         : None
* Return         : PASSED: pBuffer identical to pBuffer1
*                  FAILED: pBuffer differs from pBuffer1
*******************************************************************************/
TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength)
{
  while(BufferLength--)
  {
    if(*pBuffer != *pBuffer1)
    {
      return FAILED;
    }
    
    pBuffer++;
    pBuffer1++;
  }

  return PASSED;  
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description    : Reports the name of the source file and the source line number
*                  where the assert_param error has occurred.
* Input          : - file: pointer to the source file name
*                  - line: assert_param error line source number
* Output         : None
* Return         : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{ 
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/