使用FSMC驱动DM9000

发布于 2020-11-22 20:22:02 浏览：1847 订阅该版

[tocm]

## 硬件：
- stm32f103zet6
- rt:4.0.2

使用FSMC驱动DM9000,编译没问题，运行后读DM9000的ID为0，单步调试发现FSMC从第一次读取数据开始返回就是0。FSMC初始化时成功的，感觉还是FSMC这部门未工作。
求助各位大神！
```c
int rt_hw_dm9000_init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

SRAM_HandleTypeDef FSMC_NORSRAMInitStructure;
    FSMC_NORSRAM_TimingTypeDef ReadWriteTiming;  //DM9000的读写时序

//使能GPIOD E F G时钟
    __HAL_RCC_GPIOD_CLK_ENABLE();
    __HAL_RCC_GPIOE_CLK_ENABLE();
    __HAL_RCC_GPIOF_CLK_ENABLE();
    __HAL_RCC_GPIOG_CLK_ENABLE();

//__HAL_RCC_FSMC_CLK_ENABLE();
    //__HAL_RCC_AFIO_CLK_ENABLE();
    //__HAL_RCC_FSMC_CLK_DISABLE();
    GPIO_InitStructure.Pin = GPIO_PIN_7 ;       //PD7 推挽输出
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;//GPIO_Speed_50MHz;
    GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;//GPIO_Mode_Out_PP;//推挽输出
    GPIO_InitStructure.Pull = GPIO_PULLUP;
    HAL_GPIO_Init(GPIOD,&GPIO_InitStructure);

GPIO_InitStructure.Pin = GPIO_PIN_6;       //PG6 推挽输出
    GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;//GPIO_Mode_IPU;   //上拉输入
    HAL_GPIO_Init(GPIOG,&GPIO_InitStructure);

GPIO_InitStructure.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|\
                                    GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;            //PG7 8 9 10 11 12 13 14 15复用
    //GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;//GPIO_Speed_50MHz;
    GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;//复用推挽输出
    HAL_GPIO_Init(GPIOE,&GPIO_InitStructure);

GPIO_InitStructure.Pin = GPIO_PIN_13;      //PF13复用
    //GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;//GPIO_Speed_50MHz;
    GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;//复用推挽输出
    HAL_GPIO_Init(GPIOF,&GPIO_InitStructure);

GPIO_InitStructure.Pin = GPIO_PIN_9;       //PG9复用
    //GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;//GPIO_Speed_50MHz;
    GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;//复用推挽输出
    HAL_GPIO_Init(GPIOG,&GPIO_InitStructure);

HAL_NVIC_SetPriority(EXTI9_5_IRQn,1,0);     //
    HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);           //

ReadWriteTiming.AddressSetupTime = 0;      //地址建立时间
    ReadWriteTiming.AddressHoldTime = 0;
    ReadWriteTiming.DataSetupTime = 3;     //数据建立时间
    ReadWriteTiming.BusTurnAroundDuration = 0x00;
    ReadWriteTiming.CLKDivision = 0x00;
    ReadWriteTiming.DataLatency = 0x00;
    ReadWriteTiming.AccessMode = FSMC_ACCESS_MODE_A;//使用模式A

FSMC_NORSRAMInitStructure.Instance=FSMC_NORSRAM_DEVICE;
    FSMC_NORSRAMInitStructure.Extended=FSMC_NORSRAM_EXTENDED_DEVICE;

FSMC_NORSRAMInitStructure.Init.NSBank = FSMC_NORSRAM_BANK1;  //NE2
    FSMC_NORSRAMInitStructure.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;
    FSMC_NORSRAMInitStructure.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM;
    FSMC_NORSRAMInitStructure.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;
    FSMC_NORSRAMInitStructure.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE;
    FSMC_NORSRAMInitStructure.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;
    FSMC_NORSRAMInitStructure.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;
    FSMC_NORSRAMInitStructure.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;
    FSMC_NORSRAMInitStructure.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;
    FSMC_NORSRAMInitStructure.Init.WriteOperation = FSMC_WRITE_OPERATION_DISABLE;
    FSMC_NORSRAMInitStructure.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;
    FSMC_NORSRAMInitStructure.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE;
    FSMC_NORSRAMInitStructure.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;
    //FSMC_NORSRAMInitStructure.Init.PageSize = FSMC_PAGE_SIZE_NONE;

HAL_SRAM_Init(&FSMC_NORSRAMInitStructure, &ReadWriteTiming, &ReadWriteTiming);
    //__HAL_AFIO_FSMCNADV_DISCONNECTED();

rt_sem_init(&sem_ack, "tx_ack", 1, RT_IPC_FLAG_FIFO);
    rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO);

dm9000_device.type  = TYPE_DM9000A;
    dm9000_device.mode  = DM9000_AUTO;
    dm9000_device.packet_cnt = 0;
    dm9000_device.queue_packet_len = 0;

/*
     * SRAM Tx/Rx pointer automatically return to start address,
     * Packet Transmitted, Packet Received
     */
    dm9000_device.imr_all = IMR_PAR | IMR_PTM | IMR_PRM;

dm9000_device.dev_addr[0] = 0x00;
    dm9000_device.dev_addr[1] = 0x60;
    dm9000_device.dev_addr[2] = 0x6E;
    dm9000_device.dev_addr[3] = 0x11;
    dm9000_device.dev_addr[4] = 0x22;
    dm9000_device.dev_addr[5] = 0x33;

dm9000_device.parent.parent.init       = rt_dm9000_init;
    dm9000_device.parent.parent.open       = rt_dm9000_open;
    dm9000_device.parent.parent.close      = rt_dm9000_close;
    dm9000_device.parent.parent.read       = rt_dm9000_read;
    dm9000_device.parent.parent.write      = rt_dm9000_write;
    dm9000_device.parent.parent.control    = rt_dm9000_control;
    dm9000_device.parent.parent.user_data  = RT_NULL;

dm9000_device.parent.eth_rx     = rt_dm9000_rx;
    dm9000_device.parent.eth_tx     = rt_dm9000_tx;

eth_device_init(&(dm9000_device.parent), "e0");

return 0;
}
INIT_DEVICE_EXPORT(rt_hw_dm9000_init);
```