STM32F407通过FSMC访问西门子DP从站芯片SPC3LV时ALE信号异常

只看该作者 · 2019-5-24 17:31

本帖最后由 george3023 于 2019-5-24 17:33 编辑

大家好，我最近在用STM32F407做一个Profibus-DP从站卡，一方面STM32F407通过FSMC跟西门子DP从站协议芯片SPC3LV之间交互数据，得到DP主站（eg:PLC）的指令，同时反馈状态给DP主站，另一方面STM32F407通过SCI跟变频器交互数据，传达DP主站指令，同时收集变频器状态反馈，DP从站卡相当于一个网关负责Profibus-DP跟MODBUS协议的转换。
现在碰到的问题是主循环执行写数据指令（*(volatile unsigned short int *)(0x60000AAA)=0xABCD;）FSMC_NOE跟FSMC_NWE以及数据端口通过示波器测量都能检测到信号，NADV（SPC_NL，对应SPC3的ALE）一直检测不到信号，不知道是什么原因，请大家帮忙分析一下，谢谢。

我的硬件资源配置如下：

我的软件配置如下：
void FSMC_GPIO_Config(void)
{

  GPIO_InitTypeDef GPIO_InitStructure;
  EXTI_InitTypeDef EXTI_InitStructure;


      RCC_AHB1PeriphClockCmd(
      /*控制信号*/
      SPC3_RST_CLK|SPC3_INT_CLK|SPC3_NOE_CLK|
      SPC3_NWE_CLK |SPC3_NWAIT_CLK|SPC3_NL_CLK|
      /*地址信号*/
      SPC3_A0_CLK|SPC3_A1_CLK|SPC3_A2_CLK|SPC3_A3_CLK|
      SPC3_A4_CLK|SPC3_A5_CLK|SPC3_A6_CLK|SPC3_A7_CLK|
      /*数据信号*/
      SPC3_D0_CLK|SPC3_D1_CLK|SPC3_D2_CLK|
      SPC3_D3_CLK|SPC3_D4_CLK|SPC3_D5_CLK|
      SPC3_D6_CLK|SPC3_D7_CLK, ENABLE );

/*-- GPIO Configuration ------------------------------------------------------*/
  /* SRAM Data lines configuration */
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

  GPIO_InitStructure.GPIO_Pin = SPC3_D0_PIN;
  GPIO_Init(SPC3_D0_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D0_PORT,SPC3_D0_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D1_PIN;
  GPIO_Init(SPC3_D1_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D1_PORT,SPC3_D1_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D2_PIN;
  GPIO_Init(SPC3_D2_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D2_PORT,SPC3_D2_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D3_PIN;
  GPIO_Init(SPC3_D3_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D3_PORT,SPC3_D3_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D4_PIN;
  GPIO_Init(SPC3_D4_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D4_PORT,SPC3_D4_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D5_PIN;
  GPIO_Init(SPC3_D5_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D5_PORT,SPC3_D5_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D6_PIN;
  GPIO_Init(SPC3_D6_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D6_PORT,SPC3_D6_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_D7_PIN;
  GPIO_Init(SPC3_D7_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_D7_PORT,SPC3_D7_PinSource,FSMC_AF);

  /* SRAM Address lines configuration */
  GPIO_InitStructure.GPIO_Pin = SPC3_A0_PIN;
  GPIO_Init(SPC3_A0_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A0_PORT,SPC3_A0_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A1_PIN;
  GPIO_Init(SPC3_A1_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A1_PORT,SPC3_A1_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A2_PIN;
  GPIO_Init(SPC3_A2_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A2_PORT,SPC3_A2_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A3_PIN;
  GPIO_Init(SPC3_A3_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A3_PORT,SPC3_A3_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A4_PIN;
  GPIO_Init(SPC3_A4_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A4_PORT,SPC3_A4_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A5_PIN;
  GPIO_Init(SPC3_A5_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A5_PORT,SPC3_A5_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A6_PIN;
  GPIO_Init(SPC3_A6_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A6_PORT,SPC3_A6_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_A7_PIN;
  GPIO_Init(SPC3_A7_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_A7_PORT,SPC3_A7_PinSource,FSMC_AF);

  /* NOE, NWE, NWAIT and NL configuration */
  GPIO_InitStructure.GPIO_Pin = SPC3_NOE_PIN;
  GPIO_Init(SPC3_NOE_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_NOE_PORT,SPC3_NOE_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_NWE_PIN;
  GPIO_Init(SPC3_NWE_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_NWE_PORT,SPC3_NWE_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_NWAIT_PIN;
  GPIO_Init(SPC3_NWAIT_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_NWAIT_PORT,SPC3_NWAIT_PinSource,FSMC_AF);

  GPIO_InitStructure.GPIO_Pin = SPC3_NL_PIN;
  GPIO_Init(SPC3_NL_PORT, &GPIO_InitStructure);
  GPIO_PinAFConfig(SPC3_NL_PORT,SPC3_NL_PinSource,FSMC_AF);

  /* RST configuration */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Pin = SPC3_RST_PIN;
  GPIO_Init ( SPC3_RST_PORT, & GPIO_InitStructure );

  /* INT configuration */
  /* 选择INT的引脚 */
  GPIO_InitStructure.GPIO_Pin = SPC3_INT_PIN;
  /* 设置引脚为输入模式 */
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  /* 设置引脚不上拉也不下拉 */
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  /* 使用上面的结构体初始化SPC3复位引脚 */
  GPIO_Init(SPC3_INT_PORT, &GPIO_InitStructure);

/* 连接 EXTI 中断源到INT引脚 */
  SYSCFG_EXTILineConfig(FSMC_INT_EXTI_PORTSOURCE,FSMC_INT_EXTI_PINSOURCE);

  /* 选择 EXTI 中断源 */
  EXTI_InitStructure.EXTI_Line = FSMC_INT_EXTI_LINE;
  /* 中断模式 */
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  /* 下降沿触发 */
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  /* 使能中断/事件线 */
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);


}

void FSMC_SRAM_Config(void)
{
  FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  p;

  /*使能FSMC外设时钟*/
  RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE);

/*-- FSMC Configuration ------------------------------------------------------*/
  p.FSMC_AddressSetupTime = 15;                /*ADDSET  地址建立时间*/
  p.FSMC_AddressHoldTime = 15;                /*ADDHOLD 地址保持时间*/
  p.FSMC_DataSetupTime = 15;                   /*DATAST 数据建立时间*/
  p.FSMC_BusTurnAroundDuration = 0xFF;          /*BUSTURN 总线返转时间*/
  p.FSMC_CLKDivision = 0;                   /*CLKDIV 时钟分频*/
  p.FSMC_DataLatency = 0;                      /*DATLAT 数据保持时间*/
  p.FSMC_AccessMode = FSMC_AccessMode_B;//FSMC_AccessMode_D;    /*ACCMOD FSMC 访问模式*/

  /*选择设置的BANK及片选信号*/
  FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;

  /*设置是否数据地址总线分时复用*/
  FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Enable;//FSMC_DataAddressMux_Disable;

  /*设置存储器类型*/
  FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_NOR;

  /*设置数据宽度*/
  FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;//FSMC_MemoryDataWidth_16b;//

  /*设置是否使用成组访问模式*/
  FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;

  FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;

  /*设置WAIT信号的有效电平*/
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;

  /*设置是否使用环回模式*/
  FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;

  /*设置WAIT信号有效时机*/
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;

  /*设定是否使能写操作*/
  FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;

  /*设定是否使用WAIT信号*/
  FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Enable;//FSMC_WaitSignal_Disable;

  /*设定是否使用单独的写时序*/
  FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;

  /*设定是否使用成组写模式*/
  FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;

  /*设定读写时序*/
  FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
  FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;

  FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);

  /* Enable FSMC Bank1_SRAM Bank */
  FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);

}