444 lines
13 KiB
C
444 lines
13 KiB
C
/*
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* STM32F4以太网硬件抽象层实现
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* 功能：实现STM32F4平台的以太网硬件抽象层
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* 依赖硬件：STM32F407VE
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* 跨平台适配点：通过硬件抽象层接口适配不同平台
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*/
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#include "hal.h"
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#include "stm32f4xx_hal.h"
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#include "lwip/opt.h"
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#include "lwip/mem.h"
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#include "lwip/memp.h"
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#include "lwip/timeouts.h"
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#include "netif/etharp.h"
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#include "lwip/ethip6.h"
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#include <string.h>
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/* 以太网句柄 */
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static ETH_HandleTypeDef heth;
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static uint32_t g_phy_address = 0; /* 存储PHY地址 */
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static uint32_t g_last_link_check_time = 0; /* 上次链接状态检测时间 */
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static uint32_t g_link_check_interval = 1000; /* 链接状态检测间隔 (ms) */
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static uint8_t g_link_state_stable = 0; /* 链接状态稳定性标志 */
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static uint8_t g_link_state_counter = 0; /* 链接状态计数器，用于防抖 */
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/* DMA描述符和缓冲区 */
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/* 优化缓冲区对齐方式，提高内存访问效率 */
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__attribute__((section(".RxDecripSection"))) __attribute__((aligned(32))) static ETH_DMADescTypeDef DMARxDscrTab[ETH_RXBUFNB];
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__attribute__((section(".TxDecripSection"))) __attribute__((aligned(32))) static ETH_DMADescTypeDef DMATxDscrTab[ETH_TXBUFNB];
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__attribute__((section(".RxArraySection"))) __attribute__((aligned(32))) static uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE];
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__attribute__((section(".TxArraySection"))) __attribute__((aligned(32))) static uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE];
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/* 信号量 */
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static osal_sem_t s_xSemaphore = NULL;
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/**
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* @brief 检测并配置PHY
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* @return HAL_StatusTypeDef: 操作结果
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* @note 负责检测PHY地址并进行配置
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*/
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static hal_status_t detect_and_configure_phy(void)
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{
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uint32_t phy_id1 = 0, phy_id2 = 0;
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uint8_t detected_phy_addr = 0xFF; /* 无效的初始值 */
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uint32_t regvalue;
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/* 优先检查常见的PHY地址，减少遍历次数 */
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uint8_t common_phy_addresses[] = {0, 1, 2, 3, 16, 17, 18, 19, 20};
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uint8_t common_phy_count = sizeof(common_phy_addresses) / sizeof(common_phy_addresses[0]);
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/* 先检查常见地址 */
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for(uint8_t i = 0; i < common_phy_count; i++) {
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uint8_t addr = common_phy_addresses[i];
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/* 读取PHY ID寄存器（通常是Reg 2和3） */
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if(HAL_ETH_ReadPHYRegister(&heth, addr, 2, &phy_id1) == HAL_OK &&
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HAL_ETH_ReadPHYRegister(&heth, addr, 3, &phy_id2) == HAL_OK) {
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if((phy_id1 != 0xFFFF) && (phy_id1 != 0x0000) && (phy_id1 != 0)) {
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detected_phy_addr = addr;
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osal_log_i("Found PHY at Address %d (ID: %04x %04x)", addr, phy_id1, phy_id2);
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goto phy_found;
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}
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}
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}
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/* 如果常见地址没找到，再遍历所有可能的地址 */
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for(uint8_t addr = 0; addr <= 31; addr++) {
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/* 跳过已经检查过的常见地址 */
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uint8_t skip = 0;
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for(uint8_t i = 0; i < common_phy_count; i++) {
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if(addr == common_phy_addresses[i]) {
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skip = 1;
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break;
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}
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}
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if(skip) continue;
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/* 读取PHY ID寄存器（通常是Reg 2和3） */
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if(HAL_ETH_ReadPHYRegister(&heth, addr, 2, &phy_id1) == HAL_OK &&
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HAL_ETH_ReadPHYRegister(&heth, addr, 3, &phy_id2) == HAL_OK) {
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if((phy_id1 != 0xFFFF) && (phy_id1 != 0x0000) && (phy_id1 != 0)) {
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detected_phy_addr = addr;
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osal_log_i("Found PHY at Address %d (ID: %04x %04x)", addr, phy_id1, phy_id2);
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goto phy_found;
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}
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}
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}
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phy_found:
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if (detected_phy_addr != 0xFF)
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{
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g_phy_address = detected_phy_addr;
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/* PHY软复位 */
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osal_log_i("Resetting PHY at address %d...", g_phy_address);
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/* 写入复位位 */
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HAL_ETH_WritePHYRegister(&heth, g_phy_address, PHY_BCR, PHY_RESET);
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/* 等待复位完成 */
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uint32_t tickstart = osal_tick_get();
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uint32_t reset_timeout = 200; // 优化为200ms超时
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do {
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HAL_ETH_ReadPHYRegister(&heth, g_phy_address, PHY_BCR, ®value);
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if((regvalue & PHY_RESET) == 0) break;
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} while ((osal_tick_get() - tickstart) < reset_timeout); // 200ms超时
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/* 添加延迟以确保PHY稳定 */
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osal_thread_mdelay(50); // 优化为50ms延迟
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return HAL_STATUS_OK;
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}
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else
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{
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osal_log_e("No PHY found!");
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return HAL_STATUS_ERROR;
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}
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}
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/**
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* @brief 配置MAC
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* @param macConf: MAC配置结构体指针
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* @return 无
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* @note 负责配置MAC的双工模式、速度和校验和等
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*/
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static void configure_mac(ETH_MACConfigTypeDef *macConf)
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{
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HAL_ETH_GetMACConfig(&heth, macConf);
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macConf->DuplexMode = ETH_FULLDUPLEX_MODE;
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macConf->Speed = ETH_SPEED_100M;
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macConf->ChecksumOffload = ENABLE; /* 启用硬件校验和 */
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HAL_ETH_SetMACConfig(&heth, macConf);
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}
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/**
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* @brief 以太网初始化
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* @return hal_status_t: 操作结果
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* @note 初始化以太网硬件
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*/
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static hal_status_t stm32f4_eth_init(void)
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{
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/* 使用固定MAC地址避免冲突/过滤 */
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uint8_t macaddress[6] = { 0x00, 0x80, 0xE1, 0x00, 0x00, 0x55 };
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ETH_MACConfigTypeDef macConf;
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HAL_StatusTypeDef hal_eth_init_status;
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osal_log_i("MAC: %02x:%02x:%02x:%02x:%02x:%02x",
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macaddress[0], macaddress[1], macaddress[2],
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macaddress[3], macaddress[4], macaddress[5]);
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/* 初始化ETH句柄 */
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heth.Instance = ETH;
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heth.Init.MACAddr = macaddress;
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heth.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;
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heth.Init.TxDesc = DMATxDscrTab;
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heth.Init.RxDesc = DMARxDscrTab;
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heth.Init.RxBuffLen = ETH_RX_BUF_SIZE;
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/* 初始化ETH（MAC、DMA、GPIO通过MSP）以启用MDC/MDIO */
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hal_eth_init_status = HAL_ETH_Init(&heth);
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if (hal_eth_init_status == HAL_OK)
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{
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/* 检测并配置PHY */
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if (detect_and_configure_phy() == HAL_STATUS_OK)
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{
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/* 配置MAC */
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configure_mac(&macConf);
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/* 手动启用混杂模式，因为它不在结构体中 */
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heth.Instance->MACFFR |= ETH_MACFFR_PM;
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/* 启动ETH中断 */
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HAL_ETH_Start_IT(&heth);
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/* 创建信号量 */
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s_xSemaphore = osal_sem_create("eth_sem", 0);
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return HAL_STATUS_OK;
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}
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}
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else
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{
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osal_log_e("HAL_ETH_Init failed");
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}
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return HAL_STATUS_ERROR;
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}
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/**
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* @brief 以太网反初始化
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* @return hal_status_t: 操作结果
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* @note 反初始化以太网硬件
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*/
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static hal_status_t stm32f4_eth_deinit(void)
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{
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/* 停止ETH */
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HAL_ETH_Stop(&heth);
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/* 反初始化ETH */
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if (HAL_ETH_DeInit(&heth) != HAL_OK) {
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return HAL_STATUS_ERROR;
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}
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/* 删除信号量 */
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if (s_xSemaphore != NULL) {
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osal_sem_delete(s_xSemaphore);
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s_xSemaphore = NULL;
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}
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return HAL_STATUS_OK;
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}
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/**
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* @brief 以太网发送数据
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* @param data: 数据指针
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* @param len: 数据长度
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* @return hal_status_t: 操作结果
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* @note 发送数据
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*/
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static hal_status_t stm32f4_eth_send(const uint8_t *data, uint32_t len)
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{
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ETH_TxPacketConfigTypeDef txConfig;
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ETH_BufferTypeDef txBuffer;
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memset(&txConfig, 0, sizeof(ETH_TxPacketConfigTypeDef));
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/* 启用硬件校验和插入 */
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txConfig.Attributes = ETH_TX_PACKETS_FEATURES_CSUM | ETH_TX_PACKETS_FEATURES_CRCPAD;
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txConfig.ChecksumCtrl = ETH_CHECKSUM_IPHDR_PAYLOAD_INSERT_PHDR_CALC;
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txConfig.CRCPadCtrl = ETH_CRC_PAD_INSERT;
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txBuffer.buffer = (uint8_t*)data;
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txBuffer.len = len;
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txBuffer.next = NULL;
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txConfig.Length = len;
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txConfig.TxBuffer = &txBuffer;
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if (HAL_ETH_Transmit(&heth, &txConfig, 10) == HAL_OK) {
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return HAL_STATUS_OK;
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} else {
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return HAL_STATUS_ERROR;
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}
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}
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/**
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* @brief 以太网接收数据
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* @param data: 数据指针
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* @param len: 数据长度指针
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* @param timeout: 超时时间
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* @return hal_status_t: 操作结果
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* @note 接收数据
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*/
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static hal_status_t stm32f4_eth_recv(uint8_t *data, uint32_t *len, uint32_t timeout)
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{
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uint8_t *buffer = NULL;
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uint32_t rxLength = 0;
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if (s_xSemaphore == NULL) {
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return HAL_STATUS_ERROR;
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}
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if (osal_sem_take(s_xSemaphore, timeout) != OSAL_OK) {
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return HAL_STATUS_TIMEOUT;
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}
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if (HAL_ETH_ReadData(&heth, (void**)&buffer) == HAL_OK)
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{
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/* Get the received frame length from Rx descriptor list */
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rxLength = heth.RxDescList.RxDataLength;
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if (rxLength > 0 && buffer != NULL && data != NULL && len != NULL) {
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memcpy(data, buffer, rxLength);
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*len = rxLength;
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return HAL_STATUS_OK;
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}
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}
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return HAL_STATUS_ERROR;
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}
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/**
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* @brief 获取以太网链接状态
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* @return hal_status_t: 操作结果
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* @note 获取以太网链接状态
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*/
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static hal_status_t stm32f4_eth_get_link_status(void)
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{
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uint32_t regvalue = 0;
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uint32_t current_time = osal_tick_get();
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/* 实现时间间隔控制，减少PHY寄存器读取 */
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if ((current_time - g_last_link_check_time) < g_link_check_interval)
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{
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return g_link_state_stable ? HAL_STATUS_OK : HAL_STATUS_ERROR;
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}
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g_last_link_check_time = current_time;
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/* 检查PHY地址是否有效 */
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if (g_phy_address == 0 || g_phy_address > 31) {
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osal_log_e("Invalid PHY address: %d", g_phy_address);
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g_link_state_stable = 0;
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g_link_state_counter = 0;
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return HAL_STATUS_ERROR;
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}
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/* 使用配置的PHY地址读取状态寄存器 */
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HAL_StatusTypeDef status = HAL_ETH_ReadPHYRegister(&heth, g_phy_address, PHY_BSR, ®value);
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if (status != HAL_OK) {
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osal_log_e("Failed to read PHY register, status=%d", status);
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g_link_state_counter--;
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if (g_link_state_counter <= 0) {
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g_link_state_counter = 0;
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g_link_state_stable = 0;
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}
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return HAL_STATUS_ERROR;
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}
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osal_log_i("PHY BSR=0x%04x, LinkStatus=%d", regvalue, (regvalue & PHY_LINKED_STATUS) != 0);
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if ((regvalue & PHY_LINKED_STATUS) != 0)
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{
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/* 链接状态防抖 */
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g_link_state_counter++;
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if (g_link_state_counter >= 3) /* 连续3次检测到链接状态为up */
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{
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g_link_state_stable = 1;
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}
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return HAL_STATUS_OK;
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}
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else
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{
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/* 链接状态防抖 */
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g_link_state_counter--;
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if (g_link_state_counter <= 0) /* 连续3次检测到链接状态为down */
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{
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g_link_state_counter = 0;
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g_link_state_stable = 0;
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}
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return HAL_STATUS_ERROR;
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}
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}
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/* 以太网硬件抽象层操作结构体 */
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const hal_eth_ops_t stm32f4_eth_ops = {
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.init = stm32f4_eth_init,
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.deinit = stm32f4_eth_deinit,
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.send = stm32f4_eth_send,
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.recv = stm32f4_eth_recv,
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.get_link_status = stm32f4_eth_get_link_status
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};
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/**
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* @brief 以太网Rx完成回调
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* @param heth: 以太网句柄
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* @return 无
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* @note 以太网接收完成回调函数
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*/
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void HAL_ETH_RxCpltCallback(ETH_HandleTypeDef *heth)
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{
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(void)heth;
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if (s_xSemaphore != NULL)
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{
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osal_sem_release(s_xSemaphore);
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}
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}
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/**
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* @brief 以太网Rx分配回调
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* @param buff: 缓冲区指针
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* @return 无
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* @note 以太网接收缓冲区分配回调函数
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*/
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void HAL_ETH_RxAllocateCallback(uint8_t **buff)
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{
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static int rx_idx = 0;
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*buff = Rx_Buff[rx_idx];
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rx_idx = (rx_idx + 1) % ETH_RXBUFNB;
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}
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/**
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* @brief 以太网Rx链接回调
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* @param pStart: 开始指针
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* @param pEnd: 结束指针
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* @param buff: 缓冲区指针
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* @param Length: 长度
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* @return 无
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* @note 以太网接收链接回调函数
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*/
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void HAL_ETH_RxLinkCallback(void **pStart, void **pEnd, uint8_t *buff, uint16_t Length)
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{
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(void)Length;
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*pStart = (void *)buff;
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*pEnd = (void *)buff;
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}
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/**
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* @brief 以太网中断处理函数
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* @return 无
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* @note 以太网中断处理函数
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*/
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void ETH_IRQHandler(void)
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{
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/* 直接调用HAL中断处理函数，不使用全局临界区
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* HAL_ETH_IRQHandler内部已经有适当的中断保护机制
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*/
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HAL_ETH_IRQHandler(&heth);
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}
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/**
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* @brief 以太网MSP初始化
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* @param heth: 以太网句柄
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* @return 无
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* @note 初始化以太网的MSP
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*/
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void HAL_ETH_MspInit(ETH_HandleTypeDef *heth)
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{
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(void)heth;
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GPIO_InitTypeDef GPIO_InitStructure;
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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__HAL_RCC_ETH_CLK_ENABLE();
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/* PA1, PA2, PA7 */
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GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_7;
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GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* PC1, PC4, PC5 */
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GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
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/* PB11, PB12, PB13 */
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GPIO_InitStructure.Pin = GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
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HAL_NVIC_SetPriority(ETH_IRQn, 0x07, 0);
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HAL_NVIC_EnableIRQ(ETH_IRQn);
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} |