/* * File : drv_mpu.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2015, RT-Thread Development Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Change Logs: * Date Author Notes * 2017-08-25 LongfeiMa transplantation driver of lan8742a */ #include #include "lan8742a.h" #include "etharp.h" #include "ethernetif.h" #include "stm32h7xx_hal.h" #include "lwip/opt.h" #include "lwip/ip_frag.h" #include "lwip/def.h" #include "lwip/inet_chksum.h" #include "lwip/netif.h" #include "lwip/snmp.h" #include "lwip/stats.h" #include "lwip/pbuf.h" #include "lwipopts.h" /** @defgroup LAN8742 LAN8742 * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /** @defgroup LAN8742_Private_Defines LAN8742 Private Defines * @{ */ #define LAN8742_SW_RESET_TO ((uint32_t)500U) //software reset timeout deadline #define LAN8742_INIT_TO ((uint32_t)2000U)//Wait for 2000ms to perform initialization #define LAN8742_MAX_DEV_ADDR ((uint32_t)31U) //用于初始化时，搜索IC挂载的有效地址 #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma location=0x30040000 ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT]; /* Ethernet Rx DMA Descriptors */ #pragma location=0x30040060 ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT]; /* Ethernet Tx DMA Descriptors */ #pragma location=0x30040200 uint8_t Rx_Buff[ETH_RX_DESC_CNT][ETH_MAX_PACKET_SIZE]; /* Ethernet Receive Buffers */ #elif defined ( __CC_ARM ) /* MDK ARM Compiler */ __attribute__((at(0x30040000))) ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT]; /* Ethernet Rx DMA Descriptors */ __attribute__((at(0x30040060))) ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT]; /* Ethernet Tx DMA Descriptors */ __attribute__((at(0x30040200))) uint8_t Rx_Buff[ETH_RX_DESC_CNT][ETH_MAX_PACKET_SIZE]; /* Ethernet Receive Buffer */ #elif defined ( __GNUC__ ) /* GNU Compiler */ ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT] __attribute__((section(".RxDecripSection"))); /* Ethernet Rx DMA Descriptors */ ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT] __attribute__((section(".TxDecripSection"))); /* Ethernet Tx DMA Descriptors */ uint8_t Rx_Buff[ETH_RX_DESC_CNT][ETH_MAX_PACKET_SIZE] __attribute__((section(".RxArraySection"))); /* Ethernet Receive Buffers */ #endif struct pbuf_custom rx_pbuf[ETH_RX_DESC_CNT]; uint32_t current_pbuf_idx =0; ETH_HandleTypeDef EthHandle; ETH_TxPacketConfig TxConfig; #define MAX_ADDR_LEN 6 struct rt_lan8742_eth { /* inherit from ethernet device */ struct eth_device parent; /* interface address info. */ rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */ }; static struct rt_lan8742_eth lan8742_device; static struct rt_semaphore sem_lock; /******************************************************************************* PHI IO Functions *******************************************************************************/ /** * @brief Initializes the MDIO interface GPIO and clocks. * @param None * @retval 0 if OK, -1 if ERROR */ int32_t ETH_PHY_IO_Init(void) { /* We assume that MDIO GPIO configuration is already done in the ETH_MspInit() else it should be done here */ /* Configure the MDIO Clock */ HAL_ETH_SetMDIOClockRange(&EthHandle); return 0; } /** * @brief De-Initializes the MDIO interface . * @param None * @retval 0 if OK, -1 if ERROR */ int32_t ETH_PHY_IO_DeInit (void) { return 0; } /** * @brief Read a PHY register through the MDIO interface. * @param DevAddr: PHY port address * @param RegAddr: PHY register address * @param pRegVal: pointer to hold the register value * @retval 0 if OK -1 if Error */ int32_t ETH_PHY_IO_ReadReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t *pRegVal) { if(HAL_ETH_ReadPHYRegister(&EthHandle, DevAddr, RegAddr, pRegVal) != HAL_OK) { return -1; } return 0; } /** * @brief Write a value to a PHY register through the MDIO interface. * @param DevAddr: PHY port address * @param RegAddr: PHY register address * @param RegVal: Value to be written * @retval 0 if OK -1 if Error */ int32_t ETH_PHY_IO_WriteReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t RegVal) { if(HAL_ETH_WritePHYRegister(&EthHandle, DevAddr, RegAddr, RegVal) != HAL_OK) { return -1; } return 0; } /** * @brief Get the time in millisecons used for internal PHY driver process. * @retval Time value */ int32_t ETH_PHY_IO_GetTick(void) { return HAL_GetTick(); } //IC相关结构体 lan8742_Object_t LAN8742 = { 0, //LAN8742.DevAddr 0, //LAN8742.Is_Initialized { ETH_PHY_IO_Init, //LAN8742.IO.Init ETH_PHY_IO_DeInit, //LAN8742.IO.DeInit ETH_PHY_IO_WriteReg,//LAN8742.IO.WriteReg ETH_PHY_IO_ReadReg, //LAN8742.IO.ReadReg ETH_PHY_IO_GetTick, //LAN8742.IO.GetTick }, NULL, }; /******************************************************************************* Ethernet MSP Routines *******************************************************************************/ /** * @brief Initializes the ETH MSP. * @param heth: ETH handle * @retval None */ void HAL_ETH_MspInit(ETH_HandleTypeDef *heth) { GPIO_InitTypeDef GPIO_InitStructure; /* Ethernett MSP init: RMII Mode */ /* Enable GPIOs clocks */ __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOG_CLK_ENABLE(); /* Ethernet pins configuration ************************************************/ /* RMII_REF_CLK ----------------------> PA1 RMII_MDIO -------------------------> PA2 RMII_MDC --------------------------> PC1 RMII_MII_CRS_DV -------------------> PA7 RMII_MII_RXD0 ---------------------> PC4 RMII_MII_RXD1 ---------------------> PC5 RMII_MII_RXER ---------------------> PG2 RMII_MII_TX_EN --------------------> PG11 RMII_MII_TXD0 ---------------------> PG13 RMII_MII_TXD1 ---------------------> PB13 */ /* Configure PA1, PA2 and PA7 */ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH; GPIO_InitStructure.Mode = GPIO_MODE_AF_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Alternate = GPIO_AF11_ETH; GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_7; HAL_GPIO_Init(GPIOA, &GPIO_InitStructure); /* Configure PB13 */ GPIO_InitStructure.Pin = GPIO_PIN_13; HAL_GPIO_Init(GPIOB, &GPIO_InitStructure); /* Configure PC1, PC4 and PC5 */ GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); /* Configure PG2, PG11, PG13 and PG14 */ GPIO_InitStructure.Pin = GPIO_PIN_2 | GPIO_PIN_11 | GPIO_PIN_13; HAL_GPIO_Init(GPIOG, &GPIO_InitStructure); /* Enable the Ethernet global Interrupt */ HAL_NVIC_SetPriority(ETH_IRQn, 0x7, 0); HAL_NVIC_EnableIRQ(ETH_IRQn); /* Enable Ethernet clocks */ __HAL_RCC_ETH1MAC_CLK_ENABLE(); __HAL_RCC_ETH1TX_CLK_ENABLE(); __HAL_RCC_ETH1RX_CLK_ENABLE(); } /** * @brief Initialize the lan8742 and configure the needed hardware resources * @param void. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_ADDRESS_ERROR if cannot find device address * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register * LAN8742_STATUS_RESET_TIMEOUT if cannot perform a software reset */ static int32_t LAN8742_Init(lan8742_Object_t *pObj) { uint32_t tickstart = 0, regvalue = 0, addr = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->Is_Initialized == 0) { if(pObj->IO.Init != 0) { /* GPIO and Clocks initialization */ pObj->IO.Init(); } /* for later check */ pObj->DevAddr = LAN8742_MAX_DEV_ADDR + 1; /* Get the device address from special mode register */ for(addr = 0; addr <= LAN8742_MAX_DEV_ADDR; addr ++) { if(pObj->IO.ReadReg(addr, LAN8742_REG_SMR, ®value) < 0) { status = LAN8742_STATUS_READ_ERROR; /* Can't read from this device address continue with next address */ continue; } if((regvalue & LAN8742_SMR_PHY_ADDR) == addr) { pObj->DevAddr = addr; status = LAN8742_STATUS_OK; break; } } if(pObj->DevAddr > LAN8742_MAX_DEV_ADDR) { status = LAN8742_STATUS_ADDRESS_ERROR; } /* if device address is matched */ if(status == LAN8742_STATUS_OK) { /* set a software reset */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, LAN8742_BCR_RESET) >= 0) { /* get software reset status */ if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, ®value) >= 0) { tickstart = pObj->IO.GetTick(); /* wait until software reset is done or timeout occured */ while(regvalue & LAN8742_BCR_RESET) { if((pObj->IO.GetTick() - tickstart) <= LAN8742_SW_RESET_TO) { if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, ®value) < 0) { status = LAN8742_STATUS_READ_ERROR; break; } } else { status = LAN8742_STATUS_RESET_TIMEOUT; } } } else { status = LAN8742_STATUS_READ_ERROR; } } else { status = LAN8742_STATUS_WRITE_ERROR; } } } if(status == LAN8742_STATUS_OK) { tickstart = pObj->IO.GetTick(); /* Wait for 2s to perform initialization */ while((pObj->IO.GetTick() - tickstart) <= LAN8742_INIT_TO) { } pObj->Is_Initialized = 1; } return status; } /** * @brief De-Initialize the lan8742 and it's hardware resources * @param void. * @retval LAN8742_STATUS_ERROR / LAN8742_STATUS_OK */ static int32_t LAN8742_DeInit(lan8742_Object_t *pObj) { if(pObj->Is_Initialized) { if(pObj->IO.DeInit != 0) { if(pObj->IO.DeInit() < 0) { return LAN8742_STATUS_ERROR; } } pObj->Is_Initialized = 0; } return LAN8742_STATUS_OK; } /** * @brief Disable the LAN8742 power down mode. * @param pObj: device object LAN8742_Object_t. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_DisablePowerDownMode(lan8742_Object_t *pObj) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) >= 0) { readval &= ~LAN8742_BCR_POWER_DOWN; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Enable the LAN8742 power down mode. * @param pObj: device object LAN8742_Object_t. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_EnablePowerDownMode(lan8742_Object_t *pObj) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) >= 0) { readval |= LAN8742_BCR_POWER_DOWN; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Start the auto negotiation process. * @param pObj: device object LAN8742_Object_t. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_StartAutoNego(lan8742_Object_t *pObj) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) >= 0) { readval |= LAN8742_BCR_ANEG_EN; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Get the link state of LAN8742 device. * @param pObj: Pointer to device object. * @param pLinkState: Pointer to link state * @retval LAN8742_STATUS_LINK_DOWN if link is down * LAN8742_STATUS_AUTONEGO_NOTDONE if Auto nego not completed * LAN8742_STATUS_100MBITS_FULLDUPLEX if 100Mb/s FD * LAN8742_STATUS_100MBITS_HALFDUPLEX if 100Mb/s HD * LAN8742_STATUS_10MBITS_FULLDUPLEX if 10Mb/s FD * LAN8742_STATUS_10MBITS_HALFDUPLEX if 10Mb/s HD * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_GetLinkState(lan8742_Object_t *pObj) { uint32_t readval = 0; /* Read Status register */ if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BSR, &readval) < 0) { return LAN8742_STATUS_READ_ERROR; } /* Read Status register again */ if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BSR, &readval) < 0) { return LAN8742_STATUS_READ_ERROR; } if((readval & LAN8742_BSR_LINK_STAT) == 0) { /* Return Link Down status */ return LAN8742_STATUS_LINK_DOWN; } /* Check Auto negotiaition */ if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) < 0) { return LAN8742_STATUS_READ_ERROR; } if((readval & LAN8742_BCR_ANEG_EN) != LAN8742_BCR_ANEG_EN) { if(((readval & LAN8742_BCR_SPEED_SEL) == LAN8742_BCR_SPEED_SEL) && ((readval & LAN8742_BCR_DUPLEX) == LAN8742_BCR_DUPLEX)) { return LAN8742_STATUS_100MBITS_FULLDUPLEX; } else if ((readval & LAN8742_BCR_SPEED_SEL) == LAN8742_BCR_SPEED_SEL) { return LAN8742_STATUS_100MBITS_HALFDUPLEX; } else if ((readval & LAN8742_BCR_DUPLEX) == LAN8742_BCR_DUPLEX) { return LAN8742_STATUS_10MBITS_FULLDUPLEX; } else { return LAN8742_STATUS_10MBITS_HALFDUPLEX; } } else /* Auto Nego enabled */ { if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_PSCS, &readval) < 0) { return LAN8742_STATUS_READ_ERROR; } /* Check if auto nego not done */ if((readval & LAN8742_PHYSCSR_AUTONEGO_DONE) == 0) { return LAN8742_STATUS_AUTONEGO_NOTDONE; } if((readval & LAN8742_PHYSCSR_HCDSPEEDMASK) == LAN8742_PHYSCSR_100BTX_FD) { return LAN8742_STATUS_100MBITS_FULLDUPLEX; } else if ((readval & LAN8742_PHYSCSR_HCDSPEEDMASK) == LAN8742_PHYSCSR_100BTX_HD) { return LAN8742_STATUS_100MBITS_HALFDUPLEX; } else if ((readval & LAN8742_PHYSCSR_HCDSPEEDMASK) == LAN8742_PHYSCSR_10BT_FD) { return LAN8742_STATUS_10MBITS_FULLDUPLEX; } else { return LAN8742_STATUS_10MBITS_HALFDUPLEX; } } } /** * @brief Set the link state of LAN8742 device. * @param pObj: Pointer to device object. * @param pLinkState: link state can be one of the following * LAN8742_STATUS_100MBITS_FULLDUPLEX if 100Mb/s FD * LAN8742_STATUS_100MBITS_HALFDUPLEX if 100Mb/s HD * LAN8742_STATUS_10MBITS_FULLDUPLEX if 10Mb/s FD * LAN8742_STATUS_10MBITS_HALFDUPLEX if 10Mb/s HD * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_ERROR if parameter error * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_SetLinkState(lan8742_Object_t *pObj, uint32_t LinkState) { uint32_t bcrvalue = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &bcrvalue) >= 0) { /* Disable link config (Auto nego, speed and duplex) */ bcrvalue &= ~(LAN8742_BCR_ANEG_EN | LAN8742_BCR_SPEED_SEL | LAN8742_BCR_DUPLEX); if(LinkState == LAN8742_STATUS_100MBITS_FULLDUPLEX) { bcrvalue |= (LAN8742_BCR_SPEED_SEL | LAN8742_BCR_DUPLEX); } else if (LinkState == LAN8742_STATUS_100MBITS_HALFDUPLEX) { bcrvalue |= LAN8742_BCR_SPEED_SEL; } else if (LinkState == LAN8742_STATUS_10MBITS_FULLDUPLEX) { bcrvalue |= LAN8742_BCR_DUPLEX; } else { /* Wrong link status parameter */ status = LAN8742_STATUS_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } if(status == LAN8742_STATUS_OK) { /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, bcrvalue) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } return status; } /** * @brief Enable loopback mode. * @param pObj: Pointer to device object. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_EnableLoopbackMode(lan8742_Object_t *pObj) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) >= 0) { readval |= LAN8742_BCR_LOOPBACK; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Disable loopback mode. * @param pObj: Pointer to device object. * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_DisableLoopbackMode(lan8742_Object_t *pObj) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_BCR, &readval) >= 0) { readval &= ~LAN8742_BCR_LOOPBACK; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_BCR, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Enable IT source. * @param pObj: Pointer to device object. * @param Interrupt: IT source to be enabled * should be a value or a combination of the following: * LAN8742_WOL_IT * LAN8742_ENERGYON_IT * LAN8742_AUTONEGO_COMPLETE_IT * LAN8742_REMOTE_FAULT_IT * LAN8742_LINK_DOWN_IT * LAN8742_AUTONEGO_LP_ACK_IT * LAN8742_PARALLEL_DETECTION_FAULT_IT * LAN8742_AUTONEGO_PAGE_RECEIVED_IT * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_EnableIT(lan8742_Object_t *pObj, uint32_t Interrupt) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_IM, &readval) >= 0) { readval |= Interrupt; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_IM, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Disable IT source. * @param pObj: Pointer to device object. * @param Interrupt: IT source to be disabled * should be a value or a combination of the following: * LAN8742_WOL_IT * LAN8742_ENERGYON_IT * LAN8742_AUTONEGO_COMPLETE_IT * LAN8742_REMOTE_FAULT_IT * LAN8742_LINK_DOWN_IT * LAN8742_AUTONEGO_LP_ACK_IT * LAN8742_PARALLEL_DETECTION_FAULT_IT * LAN8742_AUTONEGO_PAGE_RECEIVED_IT * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register * LAN8742_STATUS_WRITE_ERROR if connot write to register */ static int32_t LAN8742_DisableIT(lan8742_Object_t *pObj, uint32_t Interrupt) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_IM, &readval) >= 0) { readval &= ~Interrupt; /* Apply configuration */ if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_REG_IM, readval) < 0) { status = LAN8742_STATUS_WRITE_ERROR; } } else { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Clear IT flag. * @param pObj: Pointer to device object. * @param Interrupt: IT flag to be cleared * should be a value or a combination of the following: * LAN8742_WOL_IT * LAN8742_ENERGYON_IT * LAN8742_AUTONEGO_COMPLETE_IT * LAN8742_REMOTE_FAULT_IT * LAN8742_LINK_DOWN_IT * LAN8742_AUTONEGO_LP_ACK_IT * LAN8742_PARALLEL_DETECTION_FAULT_IT * LAN8742_AUTONEGO_PAGE_RECEIVED_IT * @retval LAN8742_STATUS_OK if OK * LAN8742_STATUS_READ_ERROR if connot read register */ static int32_t LAN8742_ClearIT(lan8742_Object_t *pObj, uint32_t Interrupt) { uint32_t readval = 0; int32_t status = LAN8742_STATUS_OK; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_ISF, &readval) < 0) { status = LAN8742_STATUS_READ_ERROR; } return status; } /** * @brief Get IT Flag status. * @param pObj: Pointer to device object. * @param Interrupt: IT Flag to be checked, * should be a value or a combination of the following: * LAN8742_WOL_IT * LAN8742_ENERGYON_IT * LAN8742_AUTONEGO_COMPLETE_IT * LAN8742_REMOTE_FAULT_IT * LAN8742_LINK_DOWN_IT * LAN8742_AUTONEGO_LP_ACK_IT * LAN8742_PARALLEL_DETECTION_FAULT_IT * LAN8742_AUTONEGO_PAGE_RECEIVED_IT * @retval 1 IT flag is SET * 0 IT flag is RESET * LAN8742_STATUS_READ_ERROR if connot read register */ static int32_t LAN8742_GetITStatus(lan8742_Object_t *pObj, uint32_t Interrupt) { uint32_t readval = 0; int32_t status = 0; if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_REG_ISF, &readval) >= 0) { status = ((readval & Interrupt) == Interrupt); } else { status = LAN8742_STATUS_READ_ERROR; } return status; } static rt_err_t rt_lan8742_init(rt_device_t dev) { return RT_EOK; } static rt_err_t rt_lan8742_open(rt_device_t dev, rt_uint16_t oflag) { return RT_EOK; } static rt_err_t rt_lan8742_close(rt_device_t dev) { LAN8742_DeInit(&LAN8742); LAN8742_DisableIT(&LAN8742, LAN8742_INT_ALL); LAN8742_EnablePowerDownMode(&LAN8742); return RT_EOK; } static rt_size_t rt_lan8742_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) { rt_set_errno(-RT_ENOSYS); return 0; } static rt_size_t rt_lan8742_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size) { rt_set_errno(-RT_ENOSYS); return 0; } static rt_err_t rt_lan8742_control(rt_device_t dev, rt_uint8_t cmd, void *args) { switch (cmd) { case NIOCTL_GADDR: /* get mac address */ if (args) rt_memcpy(args, lan8742_device.dev_addr, 6); else return -RT_ERROR; break; default : break; } return RT_EOK; } /* ethernet device interface */ /* transmit packet. */ rt_err_t rt_lan8742_tx( rt_device_t dev, struct pbuf* p) { uint32_t i=0, framelen = 0; struct pbuf *q; err_t errval = ERR_OK; ETH_BufferTypeDef Txbuffer[ETH_TX_DESC_CNT]; /* lock LAN8742 device */ rt_sem_take(&sem_lock, RT_WAITING_FOREVER); memset(Txbuffer, 0 , 4*sizeof(ETH_BufferTypeDef)); for(q = p; q != NULL; q = q->next) { if(i >= ETH_TX_DESC_CNT) return ERR_IF; Txbuffer[i].buffer = q->payload; Txbuffer[i].len = q->len; framelen += q->len; if(i>0) { Txbuffer[i-1].next = &Txbuffer[i]; } i++; } TxConfig.Length = framelen; TxConfig.TxBuffer = Txbuffer; /* Clean and Invalidate data cache */ SCB_CleanInvalidateDCache(); HAL_ETH_Transmit(&EthHandle, &TxConfig, 0);//Transmit an ETH frame in blocking mode /* unlock LAN8742 device */ rt_sem_release(&sem_lock); return errval; } /* reception packet. */ struct pbuf *rt_lan8742_rx(rt_device_t dev) { struct pbuf* p = RT_NULL; ETH_BufferTypeDef RxBuff; uint32_t framelength = 0; /* lock LAN8742 device */ rt_sem_take(&sem_lock, RT_WAITING_FOREVER); /* Clean and Invalidate data cache */ SCB_CleanInvalidateDCache(); if(HAL_ETH_GetRxDataBuffer(&EthHandle, &RxBuff) == HAL_OK) { HAL_ETH_GetRxDataLength(&EthHandle, &framelength); p = pbuf_alloced_custom(PBUF_RAW, framelength, PBUF_POOL, &rx_pbuf[current_pbuf_idx], RxBuff.buffer, framelength); if(current_pbuf_idx < (ETH_RX_DESC_CNT -1)) { current_pbuf_idx++; } else { current_pbuf_idx = 0; } } HAL_ETH_BuildRxDescriptors(&EthHandle); /* unlock LAN8742 device */ rt_sem_release(&sem_lock); return p; } /** * @brief Custom Rx pbuf free callback * @param pbuf: pbuf to be freed * @retval None */ static void pbuf_free_custom(struct pbuf *p) { if(p != NULL) { p->flags = 0; p->next = NULL; p->len = p->tot_len = 0; p->ref = 0; p->payload = NULL; } } int rt_hw_lan8742a_init(void) { uint32_t idx, duplex, speed = 0; int32_t PHYLinkState; ETH_MACConfigTypeDef MACConf; uint8_t macaddress[6]= {ETH_MAC_ADDR0, ETH_MAC_ADDR1, ETH_MAC_ADDR2, ETH_MAC_ADDR3, ETH_MAC_ADDR4, ETH_MAC_ADDR5}; EthHandle.Instance = ETH; EthHandle.Init.MACAddr = macaddress; EthHandle.Init.MediaInterface = HAL_ETH_RMII_MODE; EthHandle.Init.RxDesc = DMARxDscrTab; EthHandle.Init.TxDesc = DMATxDscrTab; EthHandle.Init.RxBuffLen = ETH_MAX_PACKET_SIZE; /* configure ethernet peripheral (GPIOs, clocks, MAC, DMA) */ HAL_ETH_Init(&EthHandle); for(idx = 0; idx < ETH_RX_DESC_CNT; idx ++) { HAL_ETH_DescAssignMemory(&EthHandle, idx, Rx_Buff[idx], NULL); /* Set Custom pbuf free function */ rx_pbuf[idx].custom_free_function = pbuf_free_custom; } memset(&TxConfig, 0 , sizeof(ETH_TxPacketConfig)); TxConfig.Attributes = ETH_TX_PACKETS_FEATURES_CSUM | ETH_TX_PACKETS_FEATURES_CRCPAD; TxConfig.ChecksumCtrl = ETH_CHECKSUM_IPHDR_PAYLOAD_INSERT_PHDR_CALC; TxConfig.CRCPadCtrl = ETH_CRC_PAD_INSERT; /* Initialize the LAN8742 ETH PHY */ LAN8742_Init(&LAN8742); /* Get link state */ PHYLinkState = LAN8742_GetLinkState(&LAN8742); /* Get link state */ if(PHYLinkState <= LAN8742_STATUS_LINK_DOWN) { // } else { switch (PHYLinkState) { case LAN8742_STATUS_100MBITS_FULLDUPLEX: duplex = ETH_FULLDUPLEX_MODE; speed = ETH_SPEED_100M; break; case LAN8742_STATUS_100MBITS_HALFDUPLEX: duplex = ETH_HALFDUPLEX_MODE; speed = ETH_SPEED_100M; break; case LAN8742_STATUS_10MBITS_FULLDUPLEX: duplex = ETH_FULLDUPLEX_MODE; speed = ETH_SPEED_10M; break; case LAN8742_STATUS_10MBITS_HALFDUPLEX: duplex = ETH_HALFDUPLEX_MODE; speed = ETH_SPEED_10M; break; default: duplex = ETH_FULLDUPLEX_MODE; speed = ETH_SPEED_100M; break; } /* Get MAC Config MAC */ HAL_ETH_GetMACConfig(&EthHandle, &MACConf); MACConf.DuplexMode = duplex; MACConf.Speed = speed; HAL_ETH_SetMACConfig(&EthHandle, &MACConf); HAL_ETH_Start_IT(&EthHandle); } rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO); rt_memcpy(lan8742_device.dev_addr, macaddress, 6); lan8742_device.parent.parent.init = rt_lan8742_init; lan8742_device.parent.parent.open = rt_lan8742_open; lan8742_device.parent.parent.close = rt_lan8742_close; lan8742_device.parent.parent.read = rt_lan8742_read; lan8742_device.parent.parent.write = rt_lan8742_write; lan8742_device.parent.parent.control = rt_lan8742_control; lan8742_device.parent.parent.user_data = RT_NULL; lan8742_device.parent.eth_rx = rt_lan8742_rx; lan8742_device.parent.eth_tx = rt_lan8742_tx; eth_device_init(&(lan8742_device.parent), "e0"); return 0; } INIT_DEVICE_EXPORT(rt_hw_lan8742a_init); #ifdef RT_USING_LWIP /** * @brief This function handles Ethernet interrupt request. * @param None * @retval None */ void ETH_IRQHandler(void) { HAL_ETH_IRQHandler(&EthHandle); } #endif /* RT_USING_LWIP */ /** * @brief Ethernet Rx Transfer completed callback * @param heth: ETH handle * @retval None */ void HAL_ETH_RxCpltCallback(ETH_HandleTypeDef *heth) { /* a frame has been received */ eth_device_ready(&(lan8742_device.parent)); }