main.c

基于STM32F的模拟IIC时序。从STM32F的官方范例"IOToggle_key"改写而来

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : main.c
* Author             : MCD Application Team
* Version            : V2.0.2
* Date               : 07/11/2008
* 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 "stm32f10x_lib.h"
#include "platform_config.h"
#include <IIC.h>
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
ErrorStatus HSEStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void NVIC_Configuration(void);
void Dly(vu32 nCount);

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

/*******************************************************************************
* Function Name  : main
* Description    : Main program.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{ uchar test;
  float testf,ft2;
#ifdef DEBUG
  debug();
#endif
  NVIC_Configuration();  /* NVIC Configuration */
  RCC_Configuration();   /* Configure the system clocks */
  /* Configure Key Button GPIO Pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_PIN_KEY_BUTTON;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIO_KEY_BUTTON, &GPIO_InitStructure);

  /* Test if Key Button GPIO Pin level is low (Key push-button on Eval Board pressed) */
 // if (GPIO_ReadInputDataBit(GPIO_KEY_BUTTON, GPIO_PIN_KEY_BUTTON) == 0x00)       
  { /* Key is pressed */

    /* Disable the Serial Wire Jtag Debug Port SWJ-DP */
     GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
   
   /* Configure PB.03 (JTDO) and PB.04 (JTRST) as output push-pull */
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4| GPIO_Pin_6| GPIO_Pin_7;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    
    //----------Configure PIN_LED PC 6 7 ---
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

   
   
  EEPROMBYTE_Write(1,0xdb);
  test=EEPROMBYTE_Read(1);
  test++;
  EEPROMBYTE_Write(256,test);
  EEPROMfloat_Write(301,2.359);
  EEPROMfloat_Write(101,2.359);
  EEPROMfloat_Write(17,1.774);
  testf=EEPROMBYTE_Read(255);
  testf=EEPROMBYTE_Read(256);
  testf=EEPROMfloat_Read(17);
  testf=EEPROMfloat_Read(301);
  testf=EEPROMfloat_Read(101);
  test=EEPROMBYTE_Read(17);
  test=EEPROMBYTE_Read(148);
  test=EEPROMBYTE_Read(149);
  test=EEPROMBYTE_Read(150);
  testf=EEPROMfloat_Read(301);
  testf=EEPROMBYTE_Read(299);
  
  test++;
  EEPROMfloat_Write(1255,2.356);
  testf=EEPROMfloat_Read(0x10);
 //testf=EEPROMfloat_Read(0x10);
  ft2=EEPROMfloat_Read(1255);
 testf++;
 ft2++;
  while (1)
    {
      /* Toggle JTDO pin */
      GPIO_WriteBit(GPIOB, GPIO_Pin_3, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_3)));
      /* Insert delay */
     // Delay(0x5FFFF);
     GPIO_SetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7 );
     Dly(0x5FFFF);
     GPIO_ResetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7 );
     Dly(0x5FFFF);
      /* Toggle JTRST pin */
      GPIO_WriteBit(GPIOB, GPIO_Pin_4, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_4)));
      /* Insert delay */
     // Delay(0x5FFFF);
    }
  }
 //else
  {
    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 GPIOA, GPIOB, RCC_APB2Periph_GPIO_KEY_BUTTON and AFIO clocks */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC|
                         RCC_APB2Periph_GPIO_KEY_BUTTON | RCC_APB2Periph_AFIO, 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 Dly(vu32 nCount)
{
  for(; nCount != 0; nCount--);
}

#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****/