/* * Copyright (c) 2006-2023, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2022-10-20 luobeihai first version * 2023-01-10 luobeihai fix Eanble HARDWARE_CHECKSUM bug */ #include #ifdef BSP_USING_ETH #include #include #include #include "lwipopts.h" #include "lwip/ip.h" #include "drv_eth.h" /* debug option */ //#define DRV_DEBUG //#define ETH_RX_DUMP //#define ETH_TX_DUMP #define LOG_TAG "drv.emac" #include /* Global pointers on Tx and Rx descriptor used to transmit and receive descriptors */ extern ETH_DMADescConfig_T *DMATxDescToSet, *DMARxDescToGet; /* Ethernet Rx & Tx DMA Descriptors */ extern ETH_DMADescConfig_T DMARxDscrTab[ETH_RXBUFNB]; extern ETH_DMADescConfig_T DMATxDscrTab[ETH_TXBUFNB]; /* Ethernet Receive and Transmit buffers */ extern uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE]; extern uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE]; /* phy address */ static uint8_t phy_addr = 0xFF; #define MAX_ADDR_LEN 6 struct rt_apm32_eth { /* inherit from ethernet device */ struct eth_device parent; rt_timer_t poll_link_timer; /* interface address info. */ rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */ uint32_t ETH_Speed; /*!< @ref ETH_Speed */ uint32_t ETH_Mode; /*!< @ref ETH_Duplex_Mode */ uint32_t ETH_HashTableHigh; uint32_t ETH_HashTableLow; }; static struct rt_apm32_eth apm32_eth_device; static struct rt_semaphore tx_wait; static rt_bool_t tx_is_waiting = RT_FALSE; #if defined(ETH_RX_DUMP) || defined(ETH_TX_DUMP) #define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ') static void dump_hex(const rt_uint8_t *ptr, rt_size_t buflen) { unsigned char *buf = (unsigned char *)ptr; int i, j; for (i = 0; i < buflen; i += 16) { rt_kprintf("%08X: ", i); for (j = 0; j < 16; j++) if (i + j < buflen) rt_kprintf("%02X ", buf[i + j]); else rt_kprintf(" "); rt_kprintf(" "); for (j = 0; j < 16; j++) if (i + j < buflen) rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.'); rt_kprintf("\n"); } } #endif /* interrupt service routine */ void ETH_IRQHandler(void) { rt_uint32_t status, ier; /* enter interrupt */ rt_interrupt_enter(); /* ETH DMA status registor */ status = ETH->DMASTS; /* ETH DMA interrupt resgitor */ ier = ETH->DMAINTEN; if(status & ETH_DMA_INT_MMC) { ETH_ClearDMAIntFlag(ETH_DMA_INT_MMC); } if(status & ETH_DMA_INT_NIS) { rt_uint32_t nis_clear = ETH_DMA_INT_NIS; /* [0]:Transmit Interrupt. */ if((status & ier) & ETH_DMA_INT_TX) /* packet transmission */ { if (tx_is_waiting == RT_TRUE) { tx_is_waiting = RT_FALSE; rt_sem_release(&tx_wait); } nis_clear |= ETH_DMA_INT_TX; } /* [2]:Transmit Buffer Unavailable. */ /* [6]:Receive Interrupt. */ if((status & ier) & ETH_DMA_INT_RX) /* packet reception */ { /* a frame has been received */ eth_device_ready(&(apm32_eth_device.parent)); nis_clear |= ETH_DMA_INT_RX; } /* [14]:Early Receive Interrupt. */ ETH_ClearDMAIntFlag(nis_clear); } if(status & ETH_DMA_INT_AIS) { rt_uint32_t ais_clear = ETH_DMA_INT_AIS; /* [1]:Transmit Process Stopped. */ if(status & ETH_DMA_INT_TPS) { ais_clear |= ETH_DMA_INT_TPS; } /* [3]:Transmit Jabber Timeout. */ if(status & ETH_DMA_INT_TJT) { ais_clear |= ETH_DMA_INT_TJT; } /* [4]: Receive FIFO Overflow. */ if(status & ETH_DMA_INT_RO) { ais_clear |= ETH_DMA_INT_RO; } /* [5]: Transmit Underflow. */ if(status & ETH_DMA_INT_TU) { ais_clear |= ETH_DMA_INT_TU; } /* [7]: Receive Buffer Unavailable. */ if(status & ETH_DMA_INT_RBU) { ais_clear |= ETH_DMA_INT_RBU; } /* [8]: Receive Process Stopped. */ if(status & ETH_DMA_INT_RPS) { ais_clear |= ETH_DMA_INT_RPS; } /* [9]: Receive Watchdog Timeout. */ if(status & ETH_DMA_INT_RWT) { ais_clear |= ETH_DMA_INT_RWT; } /* [10]: Early Transmit Interrupt. */ /* [13]: Fatal Bus Error. */ if(status & ETH_DMA_INT_FBE) { ais_clear |= ETH_DMA_INT_FBE; } ETH_ClearDMAIntFlag(ais_clear); } /* leave interrupt */ rt_interrupt_leave(); } #if (LWIP_IPV4 && LWIP_IGMP) || (LWIP_IPV6 && LWIP_IPV6_MLD) /* polynomial: 0x04C11DB7 */ static uint32_t ethcrc(const uint8_t *data, size_t length) { uint32_t crc = 0xffffffff; size_t i; int j; for (i = 0; i < length; i++) { for (j = 0; j < 8; j++) { if (((crc >> 31) ^ (data[i] >> j)) & 0x01) { /* x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1 */ crc = (crc << 1) ^ 0x04C11DB7; } else { crc = crc << 1; } } } return ~crc; } #define HASH_BITS 6 /* #bits in hash */ static void register_multicast_address(struct rt_apm32_eth *apm32_eth, const uint8_t *mac) { uint32_t crc; uint8_t hash; /* calculate crc32 value of mac address */ crc = ethcrc(mac, 6); /* only upper 6 bits (HASH_BITS) are used * which point to specific bit in he hash registers */ hash = (crc >> 26) & 0x3F; //rt_kprintf("register_multicast_address crc: %08X hash: %02X\n", crc, hash); if (hash > 31) { apm32_eth->ETH_HashTableHigh |= 1 << (hash - 32); ETH->HTH = apm32_eth->ETH_HashTableHigh; } else { apm32_eth->ETH_HashTableLow |= 1 << hash; ETH->HTL = apm32_eth->ETH_HashTableLow; } } #endif /* (LWIP_IPV4 && LWIP_IGMP) || (LWIP_IPV6 && LWIP_IPV6_MLD) */ #if LWIP_IPV4 && LWIP_IGMP static err_t igmp_mac_filter( struct netif *netif, const ip4_addr_t *ip4_addr, enum netif_mac_filter_action action ) { uint8_t mac[6]; const uint8_t *p = (const uint8_t *)ip4_addr; struct rt_apm32_eth *apm32_eth = (struct rt_apm32_eth *)netif->state; mac[0] = 0x01; mac[1] = 0x00; mac[2] = 0x5E; mac[3] = *(p+1) & 0x7F; mac[4] = *(p+2); mac[5] = *(p+3); register_multicast_address(apm32_eth, mac); if(1) { rt_kprintf("%s %s %s ", __FUNCTION__, (action==NETIF_ADD_MAC_FILTER)?"add":"del", ip4addr_ntoa(ip4_addr)); rt_kprintf("%02X:%02X:%02X:%02X:%02X:%02X\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); } return 0; } #endif /* LWIP_IPV4 && LWIP_IGMP */ #if LWIP_IPV6 && LWIP_IPV6_MLD static err_t mld_mac_filter( struct netif *netif, const ip6_addr_t *ip6_addr, enum netif_mac_filter_action action ) { uint8_t mac[6]; const uint8_t *p = (const uint8_t *)&ip6_addr->addr[3]; struct rt_apm32_eth *apm32_eth = (struct rt_apm32_eth *)netif->state; mac[0] = 0x33; mac[1] = 0x33; mac[2] = *(p+0); mac[3] = *(p+1); mac[4] = *(p+2); mac[5] = *(p+3); register_multicast_address(apm32_eth, mac); if(1) { rt_kprintf("%s %s %s ", __FUNCTION__, (action==NETIF_ADD_MAC_FILTER)?"add":"del", ip6addr_ntoa(ip6_addr)); rt_kprintf("%02X:%02X:%02X:%02X:%02X:%02X\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); } return 0; } #endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ /* initialize the interface */ static rt_err_t rt_apm32_eth_init(rt_device_t dev) { struct rt_apm32_eth * apm32_eth = (struct rt_apm32_eth *)dev; ETH_Config_T ETH_InitStructure; /* Enable ETHERNET clock */ #if defined(SOC_SERIES_APM32F1) RCM_EnableAHBPeriphClock(RCM_AHB_PERIPH_ETH_MAC | RCM_AHB_PERIPH_ETH_MAC_TX | RCM_AHB_PERIPH_ETH_MAC_RX); #elif defined(SOC_SERIES_APM32F4) RCM_EnableAHB1PeriphClock(RCM_AHB1_PERIPH_ETH_MAC | RCM_AHB1_PERIPH_ETH_MAC_Tx | RCM_AHB1_PERIPH_ETH_MAC_Rx); #endif /* Reset ETHERNET on AHB Bus */ ETH_Reset(); /* Software reset */ ETH_SoftwareReset(); /* Wait for software reset */ while(ETH_ReadSoftwareReset() == SET); /* ETHERNET Configuration --------------------------------------------------*/ /* Call ETH_StructInit if you don't like to configure all ETH_InitStructure parameter */ ETH_ConfigStructInit(Ð_InitStructure); /* Fill ETH_InitStructure parametrs */ /*------------------------ MAC -----------------------------------*/ ETH_InitStructure.autoNegotiation = ETH_AUTONEGOTIATION_ENABLE; ETH_InitStructure.speed = (ETH_SPEED_T)apm32_eth->ETH_Speed; ETH_InitStructure.mode = (ETH_MODE_T)apm32_eth->ETH_Mode; ETH_InitStructure.loopbackMode = ETH_LOOPBACKMODE_DISABLE; ETH_InitStructure.retryTransmission = ETH_RETRYTRANSMISSION_DISABLE; ETH_InitStructure.automaticPadCRCStrip = ETH_AUTOMATICPADCRCSTRIP_DISABLE; ETH_InitStructure.receiveAll = ETH_RECEIVEAll_DISABLE; ETH_InitStructure.broadcastFramesReception = ETH_BROADCASTFRAMESRECEPTION_ENABLE; ETH_InitStructure.promiscuousMode = ETH_PROMISCUOUS_MODE_DISABLE; ETH_InitStructure.multicastFramesFilter = ETH_MULTICASTFRAMESFILTER_HASHTABLE; ETH_InitStructure.hashTableHigh = apm32_eth->ETH_HashTableHigh; ETH_InitStructure.hashTableLow = apm32_eth->ETH_HashTableLow; ETH_InitStructure.unicastFramesFilter = ETH_UNICASTFRAMESFILTER_PERFECT; #ifdef RT_LWIP_USING_HW_CHECKSUM ETH_InitStructure.checksumOffload = ETH_CHECKSUMOFFLAOD_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.dropTCPIPChecksumErrorFrame = ETH_DROPTCPIPCHECKSUMERRORFRAME_ENABLE; ETH_InitStructure.receiveStoreForward = ETH_RECEIVESTOREFORWARD_ENABLE; ETH_InitStructure.flushReceivedFrame = ETH_FLUSHRECEIVEDFRAME_DISABLE; ETH_InitStructure.transmitStoreForward = ETH_TRANSMITSTOREFORWARD_ENABLE; ETH_InitStructure.forwardErrorFrames = ETH_FORWARDERRORFRAMES_DISABLE; ETH_InitStructure.forwardUndersizedGoodFrames = ETH_FORWARDUNDERSIZEDGOODFRAMES_DISABLE; ETH_InitStructure.secondFrameOperate = ETH_SECONDFRAMEOPERARTE_ENABLE; ETH_InitStructure.addressAlignedBeats = ETH_ADDRESSALIGNEDBEATS_ENABLE; ETH_InitStructure.fixedBurst = ETH_FIXEDBURST_ENABLE; ETH_InitStructure.rxDMABurstLength = ETH_RXDMABURSTLENGTH_32BEAT; ETH_InitStructure.txDMABurstLength = ETH_TXDMABURSTLENGTH_32BEAT; ETH_InitStructure.DMAArbitration = ETH_DMAARBITRATION_ROUNDROBIN_RXTX_2_1; /* configure Ethernet */ ETH_Config(Ð_InitStructure, phy_addr); /* Enable DMA Receive interrupt (need to enable in this case Normal interrupt) */ ETH_EnableDMAInterrupt(ETH_DMA_INT_NIS | ETH_DMA_INT_RX | ETH_DMA_INT_TX); NVIC_EnableIRQ(ETH_IRQn); /* Initialize Tx Descriptors list: Chain Mode */ ETH_ConfigDMATxDescChain(DMATxDscrTab, &Tx_Buff[0][0], ETH_TXBUFNB); /* Initialize Rx Descriptors list: Chain Mode */ ETH_ConfigDMARxDescChain(DMARxDscrTab, &Rx_Buff[0][0], ETH_RXBUFNB); /* MAC address configuration */ ETH_ConfigMACAddress(ETH_MAC_ADDRESS0, (u8*)&apm32_eth_device.dev_addr[0]); /* Enable MAC and DMA transmission and reception */ ETH_Start(); #if LWIP_IPV4 && LWIP_IGMP netif_set_igmp_mac_filter(apm32_eth->parent.netif, igmp_mac_filter); #endif /* LWIP_IPV4 && LWIP_IGMP */ #if LWIP_IPV6 && LWIP_IPV6_MLD netif_set_mld_mac_filter(apm32_eth->parent.netif, mld_mac_filter); #endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ return RT_EOK; } static rt_err_t rt_apm32_eth_open(rt_device_t dev, rt_uint16_t oflag) { return RT_EOK; } static rt_err_t rt_apm32_eth_close(rt_device_t dev) { return RT_EOK; } static rt_ssize_t rt_apm32_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) { rt_set_errno(-RT_ENOSYS); return 0; } static rt_ssize_t rt_apm32_eth_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_apm32_eth_control(rt_device_t dev, int cmd, void *args) { switch(cmd) { case NIOCTL_GADDR: /* get mac address */ if(args) rt_memcpy(args, apm32_eth_device.dev_addr, 6); else return -RT_ERROR; break; default : break; } return RT_EOK; } /* ethernet device interface */ /* transmit packet. */ rt_err_t rt_apm32_eth_tx( rt_device_t dev, struct pbuf* p) { struct pbuf* q; rt_uint32_t offset; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ while ((DMATxDescToSet->Status & ETH_DMATXDESC_OWN) != (uint32_t)RESET) { rt_err_t result; rt_uint32_t level; level = rt_hw_interrupt_disable(); tx_is_waiting = RT_TRUE; rt_hw_interrupt_enable(level); /* it's own bit set, wait it */ result = rt_sem_take(&tx_wait, RT_WAITING_FOREVER); if (result == RT_EOK) break; if (result == -RT_ERROR) return -RT_ERROR; } offset = 0; for (q = p; q != NULL; q = q->next) { uint8_t *to; /* Copy the frame to be sent into memory pointed by the current ETHERNET DMA Tx descriptor */ to = (uint8_t*)((DMATxDescToSet->Buffer1Addr) + offset); memcpy(to, q->payload, q->len); offset += q->len; } #ifdef ETH_TX_DUMP rt_kprintf("tx_dump, len:%d\r\n", p->tot_len); dump_hex((rt_uint8_t*)(DMATxDescToSet->Buffer1Addr), p->tot_len); #endif /* Setting the Frame Length: bits[12:0] */ DMATxDescToSet->ControlBufferSize = (p->tot_len & ETH_DMATXDESC_TXBS1); /* Setting the last segment and first segment bits (in this case a frame is transmitted in one descriptor) */ DMATxDescToSet->Status |= ETH_DMATXDESC_LS | ETH_DMATXDESC_FS; /* Enable TX Completion Interrupt */ DMATxDescToSet->Status |= ETH_DMATXDESC_INTC; #ifdef RT_LWIP_USING_HW_CHECKSUM DMATxDescToSet->Status |= ETH_DMATXDESC_CHECKSUMTCPUDPICMPFULL; /* clean ICMP checksum APM32F need */ { struct eth_hdr *ethhdr = (struct eth_hdr *)(DMATxDescToSet->Buffer1Addr); /* is IP ? */ if( ethhdr->type == htons(ETHTYPE_IP) ) { struct ip_hdr *iphdr = (struct ip_hdr *)(DMATxDescToSet->Buffer1Addr + SIZEOF_ETH_HDR); /* is ICMP ? */ if( IPH_PROTO(iphdr) == IP_PROTO_ICMP ) { struct icmp_echo_hdr *iecho = (struct icmp_echo_hdr *)(DMATxDescToSet->Buffer1Addr + SIZEOF_ETH_HDR + sizeof(struct ip_hdr) ); iecho->chksum = 0; } } } #endif /* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */ DMATxDescToSet->Status |= ETH_DMATXDESC_OWN; /* When Tx Buffer unavailable flag is set: clear it and resume transmission */ if ((ETH->DMASTS & BIT2) != (u32)RESET) { /** Clear TBUS ETHERNET DMA flag */ ETH->DMASTS = BIT2; /** Resume DMA transmission*/ ETH->DMATXPD = 0; } /* Update the ETHERNET DMA global Tx descriptor with next Tx decriptor */ /* Chained Mode */ /* Selects the next DMA Tx descriptor list for next buffer to send */ DMATxDescToSet = (ETH_DMADescConfig_T*) (DMATxDescToSet->Buffer2NextDescAddr); /* Return SUCCESS */ return RT_EOK; } /* reception packet. */ struct pbuf *rt_apm32_eth_rx(rt_device_t dev) { struct pbuf* p; rt_uint32_t offset = 0, framelength = 0; /* init p pointer */ p = RT_NULL; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if(((DMARxDescToGet->Status & ETH_DMARXDESC_OWN) != (uint32_t)RESET)) return p; if (((DMARxDescToGet->Status & ETH_DMARXDESC_ERRS) == (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARXDESC_LDES) != (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARXDESC_FDES) != (uint32_t)RESET)) { /* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */ framelength = ((DMARxDescToGet->Status & ETH_DMARXDESC_FL) >> ETH_DMARXDESC_FRAME_LENGTHSHIFT) - 4; /* allocate buffer */ p = pbuf_alloc(PBUF_LINK, framelength, PBUF_RAM); if (p != RT_NULL) { struct pbuf* q; for (q = p; q != RT_NULL; q= q->next) { /* Copy the received frame into buffer from memory pointed by the current ETHERNET DMA Rx descriptor */ memcpy(q->payload, (uint8_t *)((DMARxDescToGet->Buffer1Addr) + offset), q->len); offset += q->len; } #ifdef ETH_RX_DUMP rt_kprintf("rx_dump, len:%d\r\n", p->tot_len); dump_hex((rt_uint8_t*)(DMARxDescToGet->Buffer1Addr), p->tot_len); #endif } } /* Set Own bit of the Rx descriptor Status: gives the buffer back to ETHERNET DMA */ DMARxDescToGet->Status = ETH_DMARXDESC_OWN; /* When Rx Buffer unavailable flag is set: clear it and resume reception */ if ((ETH->DMASTS & BIT7) != (u32)RESET) { /* Clear RBUS ETHERNET DMA flag */ ETH->DMASTS = BIT7; /* Resume DMA reception */ ETH->DMARXPD = 0; } /* Update the ETHERNET DMA global Rx descriptor with next Rx decriptor */ /* Chained Mode */ if((DMARxDescToGet->ControlBufferSize & ETH_DMARXDESC_RXCH) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADescConfig_T*) (DMARxDescToGet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMARxDescToGet->ControlBufferSize & ETH_DMARXDESC_RXER) != (uint32_t)RESET) { /* Selects the first DMA Rx descriptor for next buffer to read: last Rx descriptor was used */ DMARxDescToGet = (ETH_DMADescConfig_T*) (ETH->DMARXDLADDR); } else { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADescConfig_T*) ((uint32_t)DMARxDescToGet + 0x10 + ((ETH->DMABMOD & 0x0000007C) >> 2)); } } return p; } enum { PHY_LINK = (1 << 0), PHY_100M = (1 << 1), PHY_FULL_DUPLEX = (1 << 2), }; static void phy_linkchange(void) { uint8_t phy_speed_new = 0; static uint8_t phy_speed = 0; uint16_t status = ETH_ReadPHYRegister(phy_addr, PHY_BSR); LOG_D("phy basic status reg is 0x%X", status); if(status & (PHY_AUTONEGO_COMPLETE | PHY_LINKED_STATUS)) { uint16_t SR; phy_speed_new |= PHY_LINK; SR = ETH_ReadPHYRegister(phy_addr, PHY_Status_REG); LOG_D("phy control status reg is 0x%X", SR); if (PHY_Status_SPEED_100M(SR)) { phy_speed_new |= PHY_100M; } if (PHY_Status_FULL_DUPLEX(SR)) { phy_speed_new |= PHY_FULL_DUPLEX; } } /* linkchange */ if(phy_speed_new != phy_speed) { if(phy_speed_new & PHY_LINK) { LOG_D("link up "); if(phy_speed_new & PHY_100M) { LOG_D("100Mbps"); apm32_eth_device.ETH_Speed = ETH_SPEED_100M; } else { apm32_eth_device.ETH_Speed = ETH_SPEED_10M; LOG_D("10Mbps"); } if(phy_speed_new & PHY_FULL_DUPLEX) { LOG_D("full-duplex\r\n"); apm32_eth_device.ETH_Mode = ETH_MODE_FULLDUPLEX; } else { LOG_D("half-duplex\r\n"); apm32_eth_device.ETH_Mode = ETH_MODE_HALFDUPLEX; } rt_apm32_eth_init((rt_device_t)&apm32_eth_device); /* send link up. */ eth_device_linkchange(&apm32_eth_device.parent, RT_TRUE); } /* link up. */ else { LOG_I("link down\r\n"); /* send link down. */ eth_device_linkchange(&apm32_eth_device.parent, RT_FALSE); } /* link down. */ phy_speed = phy_speed_new; } /* linkchange */ } static void phy_monitor_thread_entry(void *parameter) { uint8_t detected_count = 0; while(phy_addr == 0xFF) { /* phy search */ rt_uint32_t i, temp; for (i = 0; i <= 0x1F; i++) { temp = ETH_ReadPHYRegister(i, PHY_ID1_REG); if (temp != 0xFFFF && temp != 0x00) { phy_addr = i; break; } } detected_count++; rt_thread_mdelay(1000); if (detected_count > 10) { LOG_E("No PHY device was detected, please check hardware!"); } } LOG_D("Found a phy, address:0x%02X", phy_addr); /* RESET PHY */ LOG_D("RESET PHY!\r\n"); ETH_WritePHYRegister(phy_addr, PHY_BCR, PHY_RESET); rt_thread_delay(RT_TICK_PER_SECOND * 2); ETH_WritePHYRegister(phy_addr, PHY_BCR, PHY_AUTONEGOTIATION); phy_linkchange(); apm32_eth_device.poll_link_timer = rt_timer_create("phylnk", (void (*)(void*))phy_linkchange, NULL, RT_TICK_PER_SECOND, RT_TIMER_FLAG_PERIODIC); if (!apm32_eth_device.poll_link_timer || rt_timer_start(apm32_eth_device.poll_link_timer) != RT_EOK) { LOG_E("Start link change detection timer failed"); } } static int rt_hw_apm32_eth_init(void) { extern void phy_reset(void); phy_reset(); void ETH_GPIO_Configuration(void); ETH_GPIO_Configuration(); apm32_eth_device.ETH_Speed = ETH_SPEED_100M; apm32_eth_device.ETH_Mode = ETH_MODE_FULLDUPLEX; /* set mac address. */ apm32_eth_device.dev_addr[0] = 0x00; apm32_eth_device.dev_addr[1] = 0x00; apm32_eth_device.dev_addr[2] = 0x00; apm32_eth_device.dev_addr[3] = 0x00; apm32_eth_device.dev_addr[4] = 0x00; apm32_eth_device.dev_addr[5] = 0x08; apm32_eth_device.parent.parent.init = rt_apm32_eth_init; apm32_eth_device.parent.parent.open = rt_apm32_eth_open; apm32_eth_device.parent.parent.close = rt_apm32_eth_close; apm32_eth_device.parent.parent.read = rt_apm32_eth_read; apm32_eth_device.parent.parent.write = rt_apm32_eth_write; apm32_eth_device.parent.parent.control = rt_apm32_eth_control; apm32_eth_device.parent.parent.user_data = RT_NULL; apm32_eth_device.parent.eth_rx = rt_apm32_eth_rx; apm32_eth_device.parent.eth_tx = rt_apm32_eth_tx; /* init tx semaphore */ rt_sem_init(&tx_wait, "tx_wait", 0, RT_IPC_FLAG_FIFO); /* register eth device */ eth_device_init(&(apm32_eth_device.parent), "e0"); /* start phy monitor */ { rt_thread_t tid; tid = rt_thread_create("phy", phy_monitor_thread_entry, RT_NULL, 512, RT_THREAD_PRIORITY_MAX - 2, 2); if (tid != RT_NULL) rt_thread_startup(tid); } return RT_EOK; } INIT_DEVICE_EXPORT(rt_hw_apm32_eth_init); #endif /* BSP_USING_ETH */