各位大神帮帮忙，FSMC初始化失败

黑皮男提问时间：2015-6-18 16:47 /

本帖最后由黑皮男于 2015-6-18 16:58 编辑

代码如下，在初始化FSMC的时候，进入函数HAL_SRAM_Init中的FSMC_NORSRAM_Extended_Timing_Init函数中，调用MODIFY_REG对BWTR进行写的时候就跳到了HardFault_Handler，不知道有哪个地方配置错了，头一次整FSMC，请大神指点。
void LCD_IO_Init(void)
{
      GPIO_InitTypeDef GPIO_InitStruct;

      __GPIOB_CLK_ENABLE();
      __GPIOD_CLK_ENABLE();
      __GPIOE_CLK_ENABLE();
      __GPIOG_CLK_ENABLE();

      GPIO_InitStruct.Pin = GPIO_PIN_0;       //background lit
      GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
      GPIO_InitStruct.Pull = GPIO_PULLUP;
      GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;

      HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

      GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | \
                                             GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

      HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

      GPIO_InitStruct.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;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

      HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

      GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_12;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

      HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);


}
void LCD_FSMC_Init()
{
      SRAM_HandleTypeDef SramHandle;
      FSMC_NORSRAM_TimingTypeDef SRAM_Timing;
      FSMC_NORSRAM_TimingTypeDef SRAM_ExtTiming;
      SramHandle.Instance =FSMC_NORSRAM_DEVICE;

      __FSMC_CLK_ENABLE();

      SramHandle.Init.AsynchronousWait=FSMC_ASYNCHRONOUS_WAIT_DISABLE;
      SramHandle.Init.BurstAccessMode=FSMC_BURST_ACCESS_MODE_DISABLE;
      SramHandle.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;
      SramHandle.Init.ExtendedMode=FSMC_EXTENDED_MODE_ENABLE;
      SramHandle.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;
      SramHandle.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM;
      SramHandle.Init.NSBank = FSMC_NORSRAM_BANK4;
      SramHandle.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;
      SramHandle.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;
      SramHandle.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;
      SramHandle.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;
      SramHandle.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;
      SramHandle.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;

      SRAM_Timing.AccessMode= FSMC_ACCESS_MODE_A;
      SRAM_Timing.AddressHoldTime = 0x00;
      SRAM_Timing.AddressSetupTime = 0x01;
      SRAM_Timing.BusTurnAroundDuration = 0x00;
      SRAM_Timing.CLKDivision = 0x00;
      SRAM_Timing.DataLatency = 0x00;
      SRAM_Timing.DataSetupTime = 0x0f;

      SRAM_ExtTiming.AccessMode = FSMC_ACCESS_MODE_A;
      SRAM_ExtTiming.AddressHoldTime = 0x00;
      SRAM_ExtTiming.AddressSetupTime = 0x00;
      SRAM_ExtTiming.BusTurnAroundDuration = 0x00;
      SRAM_ExtTiming.CLKDivision = 0x00;
      SRAM_ExtTiming.DataLatency = 0x00;
      SRAM_ExtTiming.DataSetupTime = 0x03;

      HAL_SRAM_Init(&SramHandle, &SRAM_Timing, &SRAM_ExtTiming);

}
void LCD_Init(void)
{
      LCD_IO_Init();
      LCD_FSMC_Init();
｝

赞收藏评论6 发布时间：2015-6-18 16:47

6个回答

黑皮男回答时间：2015-6-18 17:22:37

已调通，少了一条初始化语句，应加上SramHandle.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;如下
void LCD_FSMC_Init()
{
      SRAM_HandleTypeDef SramHandle;
      FSMC_NORSRAM_TimingTypeDef SRAM_Timing;
      FSMC_NORSRAM_TimingTypeDef SRAM_ExtTiming;
      SramHandle.Instance = LCDx;
      SramHandle.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;
..................

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