stm32f4x7_eth_bsp.c

/**
  ******************************************************************************
  * @file    stm32f4x7_eth_bsp.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    31-October-2011 
  * @brief   STM32F4x7 Ethernet hardware configuration.
  ******************************************************************************
  * @attention
  *
  * 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.
  *
  * <h2><center>&copy; Portions COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */
/**
  ******************************************************************************
  * <h2><center>&copy; Portions COPYRIGHT 2012 Embest Tech. Co., Ltd.</center></h2>
  * @file    stm32f4x7_eth_bsp.c
  * @author  CMP Team
  * @version V1.0.0
  * @date    28-December-2012
  * @brief   STM32F4x7 Ethernet hardware configuration.      
  *          Modified to support the STM32F4DISCOVERY, STM32F4DIS-BB and
  *          STM32F4DIS-LCD modules. 
  ******************************************************************************
  * @attention
  *
  * 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, Embest 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 "stm32f4x7_eth.h"
#include "stm32f4x7_eth_bsp.h"
#include "main.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t  EthInitStatus = 0;

/* Private function prototypes -----------------------------------------------*/
static void ETH_GPIO_Config(void);
static void ETH_MACDMA_Config(void);
static void ETH_NVIC_Config(void);

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

/**
  * @brief  ETH_BSP_Config
  * @param  None
  * @retval None
  */
void ETH_BSP_Config(void)
{
  /* Configure the GPIO ports for ethernet pins */
  ETH_GPIO_Config();
  
  /* Config NVIC for Ethernet */
  ETH_NVIC_Config();

  /* Configure the Ethernet MAC/DMA */
  ETH_MACDMA_Config();

  if (EthInitStatus == 0) {
    //LCD_SetTextColor(LCD_COLOR_RED);
    //LCD_DisplayStringLine(Line5, (uint8_t*)"   Ethernet Init   ");
    //LCD_DisplayStringLine(Line6, (uint8_t*)"      failed      ");
      STM_EVAL_LEDOn(LED5);
    while(1);
  }
}

/**
  * @brief  Configures the Ethernet Interface
  * @param  None
  * @retval None
  */
static void ETH_MACDMA_Config(void)
{
  ETH_InitTypeDef ETH_InitStructure;

  /* Enable ETHERNET clock  */
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_ETH_MAC | RCC_AHB1Periph_ETH_MAC_Tx |
                         RCC_AHB1Periph_ETH_MAC_Rx, ENABLE);                                             

  /* Reset ETHERNET on AHB Bus */
  ETH_DeInit();

  /* Software reset */
  ETH_SoftwareReset();

  /* Wait for software reset */
  while (ETH_GetSoftwareResetStatus() == SET);

  /* ETHERNET Configuration --------------------------------------------------*/
  /* Call ETH_StructInit if you don't like to configure all ETH_InitStructure parameter */
  ETH_StructInit(&ETH_InitStructure);

  /* Fill ETH_InitStructure parametrs */
  /*------------------------   MAC   -----------------------------------*/
  ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Enable;
  //ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Disable; 
  //  ETH_InitStructure.ETH_Speed = ETH_Speed_10M;
  //  ETH_InitStructure.ETH_Mode = ETH_Mode_FullDuplex;   

  ETH_InitStructure.ETH_LoopbackMode = ETH_LoopbackMode_Disable;
  ETH_InitStructure.ETH_RetryTransmission = ETH_RetryTransmission_Disable;
  ETH_InitStructure.ETH_AutomaticPadCRCStrip = ETH_AutomaticPadCRCStrip_Disable;
  ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Disable;
  ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Enable;
  ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;
  ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_Perfect;
  ETH_InitStructure.ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect;
#ifdef CHECKSUM_BY_HARDWARE
  ETH_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable;
#endif

  /*------------------------   DMA   -----------------------------------*/  
  
  /* When we use the Checksum offload feature, we need to enable the Store and Forward mode: 
  the store and forward guarantee that a whole frame is stored in the FIFO, so the MAC can insert/verify the checksum, 
  if the checksum is OK the DMA can handle the frame otherwise the frame is dropped */
  ETH_InitStructure.ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Enable; 
  ETH_InitStructure.ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Enable;         
  ETH_InitStructure.ETH_TransmitStoreForward = ETH_TransmitStoreForward_Enable;     
 
  ETH_InitStructure.ETH_ForwardErrorFrames = ETH_ForwardErrorFrames_Disable;       
  ETH_InitStructure.ETH_ForwardUndersizedGoodFrames = ETH_ForwardUndersizedGoodFrames_Disable;   
  ETH_InitStructure.ETH_SecondFrameOperate = ETH_SecondFrameOperate_Enable;
  ETH_InitStructure.ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Enable;      
  ETH_InitStructure.ETH_FixedBurst = ETH_FixedBurst_Enable;                
  ETH_InitStructure.ETH_RxDMABurstLength = ETH_RxDMABurstLength_32Beat;          
  ETH_InitStructure.ETH_TxDMABurstLength = ETH_TxDMABurstLength_32Beat;
  ETH_InitStructure.ETH_DMAArbitration = ETH_DMAArbitration_RoundRobin_RxTx_2_1;

  /* Configure Ethernet */
  EthInitStatus = ETH_Init(&ETH_InitStructure, LAN8720_PHY_ADDRESS);

  /* Enable the Ethernet Rx Interrupt */
  ETH_DMAITConfig(ETH_DMA_IT_NIS | ETH_DMA_IT_R, ENABLE);
}


/**
  * @brief  Configures the different GPIO ports.
  * @param  None
  * @retval None
  */
void ETH_GPIO_Config(void)
{
  volatile uint32_t i;
  GPIO_InitTypeDef GPIO_InitStructure;
  
  /* Enable GPIOs clocks */
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB
	                       | RCC_AHB1Periph_GPIOC, ENABLE);

  /* Enable SYSCFG clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);  
  
  /* MII/RMII Media interface selection --------------------------------------*/
  SYSCFG_ETH_MediaInterfaceConfig(SYSCFG_ETH_MediaInterface_RMII);


/* Ethernet pins configuration ************************************************/
   /*
        ETH_MDIO --------------> PA2
        ETH_MDC ---------------> PC1
    
        ETH_RMII_REF_CLK-------> PA1

        ETH_RMII_CRS_DV -------> PA7
				ETH_MII_RX_ER   -------> PB10
        ETH_RMII_RXD0   -------> PC4
        ETH_RMII_RXD1   -------> PC5
        ETH_RMII_TX_EN  -------> PB11
        ETH_RMII_TXD0   -------> PB12
        ETH_RMII_TXD1   -------> PB13

        ETH_RST_PIN     -------> PE2
   */

  /* Configure PA1,PA2 and PA7 */
  GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_7;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL ;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_ETH);

  /* Configure PB10,PB11,PB12 and PB13 */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_ETH);	
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_ETH);

  /* Configure PC1, PC4 and PC5 */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  GPIO_PinAFConfig(GPIOC, GPIO_PinSource1, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOC, GPIO_PinSource4, GPIO_AF_ETH);
  GPIO_PinAFConfig(GPIOC, GPIO_PinSource5, GPIO_AF_ETH);

  /* Configure the PHY RST  pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOE, &GPIO_InitStructure);

  GPIO_ResetBits(GPIOE, GPIO_Pin_2);	
  for (i = 0; i < 20000; i++);
  GPIO_SetBits(GPIOE, GPIO_Pin_2);
  for (i = 0; i < 20000; i++);
}

/**
  * @brief  Configures and enable the Ethernet global interrupt.
  * @param  None
  * @retval None
  */
void ETH_NVIC_Config(void)
{
  NVIC_InitTypeDef   NVIC_InitStructure;

  /* 2 bit for pre-emption priority, 2 bits for subpriority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4); 
  
  /* Enable the Ethernet global Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 5;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);    
}

/*********** Portions COPYRIGHT 2012 Embest Tech. Co., Ltd.*****END OF FILE****/