GD32f307芯片配置Enet接口示例代码

以下是基于GD32F30x标准库的Enet接口配置示例代码：

#include "gd32f30x.h"

#define ETH_MAC_ADDR0    (0x00)
#define ETH_MAC_ADDR1    (0x11)
#define ETH_MAC_ADDR2    (0x22)
#define ETH_MAC_ADDR3    (0x33)
#define ETH_MAC_ADDR4    (0x44)
#define ETH_MAC_ADDR5    (0x55)

#define ETH_RX_BUF_SIZE  (ETH_MAX_PACKET_SIZE)
#define ETH_TX_BUF_SIZE  (ETH_MAX_PACKET_SIZE)

uint8_t eth_rx_buf[ETH_RX_BUF_SIZE];
uint8_t eth_tx_buf[ETH_TX_BUF_SIZE];

void enet_gpio_init(void);
void enet_mac_init(void);
void enet_dma_init(void);
void enet_config(void);

int main(void)
{
    /* Enable the ENET clock */
    rcu_periph_clock_enable(RCU_ENET);

    /* Initialize the ENET GPIO */
    enet_gpio_init();

    /* Initialize the ENET MAC */
    enet_mac_init();

    /* Initialize the ENET DMA */
    enet_dma_init();

    /* Configure the ENET */
    enet_config();

    while(1);
}

void enet_gpio_init(void)
{
    /* Configure PA1 as ENET_MII_RX_CLK */
    gpio_af_set(GPIOA, GPIO_AF_11, GPIO_PIN_1);

    /* Configure PA2 as ENET_MII_MDIO */
    gpio_af_set(GPIOA, GPIO_AF_11, GPIO_PIN_2);

    /* Configure PA7 as ENET_MII_RX_DV */
    gpio_af_set(GPIOA, GPIO_AF_11, GPIO_PIN_7);

    /* Configure PB0 as ENET_MII_RXD0 */
    gpio_af_set(GPIOB, GPIO_AF_11, GPIO_PIN_0);

    /* Configure PB1 as ENET_MII_RXD1 */
    gpio_af_set(GPIOB, GPIO_AF_11, GPIO_PIN_1);

    /* Configure PB8 as ENET_MII_TXD0 */
    gpio_af_set(GPIOB, GPIO_AF_11, GPIO_PIN_8);

    /* Configure PB9 as ENET_MII_TXD1 */
    gpio_af_set(GPIOB, GPIO_AF_11, GPIO_PIN_9);

    /* Configure PC1 as ENET_MDC */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_1);

    /* Configure PC4 as ENET_MII_TX_EN */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_4);

    /* Configure PC5 as ENET_MII_TX_CLK */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_5);

    /* Configure PC8 as ENET_MII_COL */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_8);

    /* Configure PC9 as ENET_MII_TXD2 */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_9);

    /* Configure PC10 as ENET_MII_TXD3 */
    gpio_af_set(GPIOC, GPIO_AF_11, GPIO_PIN_10);
}

void enet_mac_init(void)
{
    /* Enable the MAC and reset it */
    enet_mac_deinit();

    /* Set the MAC parameters */
    enet_mac_config_t mac_config;
    mac_config.receive_all = ENABLE;
    mac_config.broadcast_frames_reception = ENABLE;
    mac_config.destination_addr_filter = DISABLE;
    mac_config.pass_control_frames = ENABLE;
    mac_config.source_addr_filter = DISABLE;
    mac_config.source_addr_hash = DISABLE;
    mac_config.jumbo_frame_size = DISABLE;
    mac_config.watchdog_disable = ENABLE;
    mac_config.checksum_offload = DISABLE;
    mac_config.giant_frame_size = DISABLE;

    /* Initialize the MAC */
    enet_mac_init(&mac_config, ETH_MAC_ADDR0, ETH_MAC_ADDR1, ETH_MAC_ADDR2, ETH_MAC_ADDR3, ETH_MAC_ADDR4, ETH_MAC_ADDR5);
}

void enet_dma_init(void)
{
    /* Reset the DMA */
    enet_dma_deinit();

    /* Set the DMA parameters */
    enet_dma_config_t dma_config;
    dma_config.tx_buf_size = ETH_TX_BUF_SIZE;
    dma_config.rx_buf_size = ETH_RX_BUF_SIZE;
    dma_config.tx_buf_count = 1;
    dma_config.rx_buf_count = 1;
    dma_config.tx_dma_channel = DMA_CH4;
    dma_config.rx_dma_channel = DMA_CH5;
    dma_config.tx_irq_enable = DISABLE;
    dma_config.rx_irq_enable = DISABLE;

    /* Initialize the DMA */
    enet_dma_init(&dma_config, eth_tx_buf, eth_rx_buf);
}

void enet_config(void)
{
    /* Set the PHY parameters */
    enet_phy_config_t phy_config;
    phy_config.mode = ENET_PHY_MODE_AUTO;
    phy_config.speed = ENET_PHY_SPEED_AUTO;
    phy_config.duplex = ENET_PHY_DUPLEX_AUTO;
    phy_config.auto_negotiation = ENABLE;

    /* Configure the PHY */
    enet_phy_config(phy_config);

    /* Start the ENET */
    enet_start();
}

需要注意的是，以上代码仅是示例代码，实际使用时需要根据具体情况进行适当的修改。