main.c

NE-STR750各部分的程序

/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
* File Name          : main.c
* Author             : MCD Application Team
* Date First Issued  : 03/10/2006
* Description        : Main program body
********************************************************************************
* History:
* 06/20/2007 : V1.1
* The document is modified by New-Embed Co.Ltd(http://wwww.2embed.com) to fit the NE-STR750F board.
* 07/17/2006 : V1.0
* 03/10/2006 : V0.1
********************************************************************************
* 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 "75x_lib.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
ErrorStatus OSC4MStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void MRCC_Configuration(void);
static void Delay(u32 nCount);

/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name  : main
* Description    : Main program
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main()
{
  #ifdef DEBUG
    debug();
  #endif
 
  /* Configure the system clocks */
  MRCC_Configuration();

/* GPIO Configuration --------------------------------------------------------*/
  /* Configure P0.08、P0.09、P0.12 and P0.13  as output push-pull */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_12 | GPIO_Pin_13 ;
  GPIO_Init(GPIO0, &GPIO_InitStructure);

  
  /* Mask the unused pins */
  GPIO_PinMaskConfig(GPIO0, ~(GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_12 | GPIO_Pin_13), ENABLE);
  GPIO_Write(GPIO0, 0x00);

  while(1)
  {
    /* Turn on leds connected to P0.08  pin */
    GPIO_WriteBit(GPIO0, GPIO_Pin_8, Bit_SET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_9, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_12, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_13, Bit_RESET);   
    
    /* Insert delay */
    Delay(0xFFFFF);
    
    /* Turn on leds connected to P0.09  pin */
    GPIO_WriteBit(GPIO0, GPIO_Pin_8, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_9, Bit_SET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_12, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_13, Bit_RESET);   
    
    /* Insert delay */
    Delay(0xFFFFF);
    
    /* Turn on leds connected to P0.12  pin */
    GPIO_WriteBit(GPIO0, GPIO_Pin_8, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_9, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_12, Bit_SET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_13, Bit_RESET);   
    
    /* Insert delay */
    Delay(0xFFFFF);
    
   /* Turn on leds connected to P0.13  pin */
    GPIO_WriteBit(GPIO0, GPIO_Pin_8, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_9, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_12, Bit_RESET);
    GPIO_WriteBit(GPIO0, GPIO_Pin_13, Bit_SET);   
    
    /* Insert delay */
    Delay(0xFFFFF);
  }
}

/*******************************************************************************
* Function Name  : MRCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void MRCC_Configuration(void)
{
  /* MRCC system reset(for debug purpose) */
  MRCC_DeInit();

  /* Wait for OSC4M start-up */
  OSC4MStartUpStatus = MRCC_WaitForOSC4MStartUp();

  if(OSC4MStartUpStatus == SUCCESS)
  {
    /* Set HCLK to 30 MHz */
    MRCC_HCLKConfig(MRCC_CKSYS_Div2);

    /* Set CKTIM to 15 MHz */
    MRCC_CKTIMConfig(MRCC_HCLK_Div2);

    /* Set PCLK to 15 MHz */
    MRCC_PCLKConfig(MRCC_CKTIM_Div1);

    /* Set CKSYS to 60 MHz */
    MRCC_CKSYSConfig(MRCC_CKSYS_OSC4MPLL, MRCC_PLL_Mul_15);
  }

  /* GPIO pins optimized for 3V3 operation */
  MRCC_IOVoltageRangeConfig(MRCC_IOVoltageRange_3V3); 
  
  /* Enable GPIO clock */
  MRCC_PeripheralClockConfig(MRCC_Peripheral_GPIO, ENABLE);
}

/*******************************************************************************
* Function Name  : Delay
* Description    : Inserts a delay time.
* Input          : nCount: specifies the delay time length.
* Output         : None
* Return         : None
*******************************************************************************/
static void Delay(u32 nCount)
{
  u32 j = 0;

  for(j = nCount; j != 0; j--);
}

/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/