main.c

stm32-eth例子

    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

 /****************************************************************/
 /*      HSE=25MHz, HCLK=72MHz, PCLK2=72MHz, PCLK1=36MHz         */
 /****************************************************************/
    /* 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);
    /*  ADCCLK = PCLK2/4 */
    RCC_ADCCLKConfig(RCC_PCLK2_Div6);

    /* Configure PLLs *********************************************************/
    /* PPL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
    RCC_PREDIV2Config(RCC_PREDIV2_Div5);
    RCC_PLL2Config(RCC_PLL2Mul_8);

    /* Enable PLL2 */
    RCC_PLL2Cmd(ENABLE);

    /* Wait till PLL2 is ready */
    while (RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET)
    {}

    /* PPL1 configuration: PLLCLK = (PLL2 / 5) * 9 = 72 MHz */
    RCC_PREDIV1Config(RCC_PREDIV1_Source_PLL2, RCC_PREDIV1_Div5);
    RCC_PLLConfig(RCC_PLLSource_PREDIV1, 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)
    {}
  }

  RCC_GetClocksFreq(&RCC_ClockFreq);

  /* Enable USART2 clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);	


  /* Enable ETHERNET clock  */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ETH_MAC | RCC_AHBPeriph_ETH_MAC_Tx |
                        RCC_AHBPeriph_ETH_MAC_Rx, ENABLE);

  /* Enable GPIOs clocks */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |	RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC |
                         RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE| RCC_APB2Periph_AFIO, ENABLE);
  /* Enable ADC1 clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
}

/**
  * @brief  Configures the different GPIO ports.
  * @param  None
  * @retval None
  */
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

/* ETHERNET pins configuration */
/* AF Output Push Pull: 
- ETH_MII_MDIO / ETH_RMII_MDIO: PA2 
- ETH_MII_MDC / ETH_RMII_MDC: PC1
- ETH_MII_TXD2: PC2 
- ETH_MII_TX_EN / ETH_RMII_TX_EN: PB11  
- ETH_MII_TXD0 / ETH_RMII_TXD0: PB12 
- ETH_MII_TXD1 / ETH_RMII_TXD1: PB13  
- ETH_MII_PPS_OUT / ETH_RMII_PPS_OUT: PB5
- ETH_MII_TXD3: PB8 */ 

  /* Configure PA2 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure PC1, PC2 and PC3 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Configure PB5, PB8, PB11, PB12 and PB13 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_8 | GPIO_Pin_11 | 
                                GPIO_Pin_12 | GPIO_Pin_13;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  
/**************************************************************/
/*               For Remapped Ethernet pins                   */
/*************************************************************/
/* Input (Reset Value):  
- ETH_MII_CRS CRS: PA0 
- ETH_MII_RX_CLK / ETH_RMII_REF_CLK: PA1   
- ETH_MII_COL: PA3  
- ETH_MII_RX_DV / ETH_RMII_CRS_DV: PD8
- ETH_MII_TX_CLK: PC3
- ETH_MII_RXD0 / ETH_RMII_RXD0: PD9 
- ETH_MII_RXD1 / ETH_RMII_RXD1: PD10 
- ETH_MII_RXD2: PD11
- ETH_MII_RXD3: PD12
- ETH_MII_RX_ER: PB10 */
 
  /* Configure PA0, PA1 and PA3 as input */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure PB10 as input */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* Configure PC3 as input */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure); 

  /* Configure PD8, PD9, PD10, PD11 and PD12 as input */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOD, &GPIO_InitStructure); /**/    

    /* ADC Channel14 config --------------------------------------------------------*/
  /* Relative to STM3210D-EVAL Board   */
  /* Configure PC.04 (ADC Channel14) as analog input -------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* MCO pin configuration------------------------------------------------- */
  /* Configure MCO (PA8) as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
 
}

/**
  * @brief  Configures the ADC.
  * @param  None
  * @retval None
  */
void ADC_Configuration(void)
{
   ADC_InitTypeDef ADC_InitStructure;

  /* ADC1 Configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel14 configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_13Cycles5);

  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Start ADC1 Software Conversion */ 
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  
}

/**
  * @brief  Configures the nested vectored interrupt controller.
  * @param  None
  * @retval None
  */
void NVIC_Configuration(void)
{
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
}

#ifdef  USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  *   where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t 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 2009 STMicroelectronics *****END OF FILE****/