st32f407vgt6 FSMC驱动8位LCD，不能读写LCD存储器

lzwxa

近来用一块自己做的板子，用407zgt6板子实现显示功能，不能读取LCD的ID，用示波器测试观察发现在对LCD进行读写时，LCD的CS、C/D，RD，WR信号没有变化，也就是FSMC没有工作，LCD用的8位数据，PD11/FSMC_A16地址 命令数据选择。

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主要部分程序如下，看看那位大神来指导一下

#define ST7789_REG        *(__IO uint16_t*)(((uint32_t)0x60000000))

#define ST7789_RAM        *(__IO uint16_t*)(((uint32_t)0x60020000))

SRAM_HandleTypeDef hsram1;

static void MX_FSMC_Init(void)

{

FSMC_NORSRAM_TimingTypeDef Timing;

FSMC_NORSRAM_TimingTypeDef ExtTiming;

  /**Perform the SRAM1 memory initialization sequence  */

hsram1.Instance = FSMC_NORSRAM_DEVICE;

hsram1.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;

  /*hsram1.Init */

hsram1.Init.NSBank = FSMC_NORSRAM_BANK1;

hsram1.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;

hsram1.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM;

hsram1.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_8;

hsram1.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE;

hsram1.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;

hsram1.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;

hsram1.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;

hsram1.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;

hsram1.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;

hsram1.Init.ExtendedMode = FSMC_EXTENDED_MODE_ENABLE;

hsram1.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;

hsram1.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;

hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE;

  /*Timing */

Timing.AddressSetupTime = 15;

Timing.AddressHoldTime = 15;

Timing.DataSetupTime = 15;

Timing.BusTurnAroundDuration = 0;

Timing.CLKDivision = 0;

Timing.DataLatency = 0;

Timing.AccessMode = FSMC_ACCESS_MODE_A;

  /*ExtTiming */

ExtTiming.AddressSetupTime = 15;

ExtTiming.AddressHoldTime = 15;

ExtTiming.DataSetupTime = 15;

ExtTiming.BusTurnAroundDuration = 0;

ExtTiming.CLKDivision = 0;

ExtTiming.DataLatency = 0;

ExtTiming.AccessMode = FSMC_ACCESS_MODE_A;

  if(HAL_SRAM_Init(&hsram1, &Timing, &ExtTiming) != HAL_OK)

  {

   Error_Handler( );

  }

}

这是cube生成的fsmc初始化，俩便有些参数做过调整实验，也没有效果。

/* USER CODE BEGIN 4 */

void ST7789_WR_REG(vu16 regval)

{

   regval = regval;        

   ST7789_REG = regval;

}

void ST7789_WR_DATA(vu16 data)

{

    data = data;         

   ST7789_RAM = data;

}

uint8_t ST7789_RD_DATA(void)

{

   vu8 ram;  

   ram = ST7789_RAM;

   return ram;

}

正点原子

帮顶

lzwxa

8位数据位，将地址改为如下所示，现象一样，求各位大神来指导一下，急急急
define ST7789_REG        *(__IO uint8_t*)(((uint32_t)0x60000000))
#define ST7789_RAM        *(__IO uint8_t*)(((uint32_t)0x60010000))