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標題: stm32F407 fsmc接DM9000A，讀取不到ID。求助！ [打印本頁]

作者: 490353119 時間: 2012-5-11 11:55
標題: stm32F407 fsmc接DM9000A，讀取不到ID。求助！
CS# <-> FSMC_NE1 CMD<-> FSMC_A16
LOW#<-> FSMC_NWE
LOR#<-> FSMC_NOE

SD0-SD15<-> FSMC_D0-FSMC_D15
void FSMC_SRAM_Init(void)
{
  FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  p;
  GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOs clock */
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOE, ENABLE);

/* Enable FSMC clock */
  RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC, ENABLE);
/*-- GPIOs Configuration -----------------------------------------------------*/
/*
+-------------------+--------------------+------------------+------------------+
+                      SRAM pins assignment                                  +
+-------------------+--------------------+------------------+------------------+
| PD0  <-> FSMC_D2    |// PE0  <-> FSMC_NBL0  |
| PD1  <-> FSMC_D3    | //PE1  <-> FSMC_NBL1  |
| //PD3  <-> FSMC_CLK | //PE2  <-> FSMC_A23 |
| PD4  <-> FSMC_NOE    | //PE3  <-> FSMC_A19 |
| PD5  <-> FSMC_NWE | //PE4  <-> FSMC_A20 |
| //PD6  <-> FSMC_NWAIT | //PE5  <-> FSMC_A21  |
| PD7  <-> FSMC_NE1    | //PE6  <-> FSMC_A22 |
| PD8  <-> FSMC_D13    | PE7 <-> FSMC_D4    |
| PD9  <-> FSMC_D14    | PE8 <-> FSMC_D5    |
| PD10 <-> FSMC_D15 | PE9 <-> FSMC_D6    |
| PD11 <-> FSMC_A16 | PE10 <-> FSMC_D7       |
| //PD12 <-> FSMC_A17 | PE11 <-> FSMC_D8    |
| //PD13 <-> FSMC_A18 | PE12 <-> FSMC_D9    |
| PD14 <-> FSMC_D0    |  PE13 <-> FSMC_D10    |
| PD15 <-> FSMC_D1    | PE14 <-> FSMC_D11    |
| //PB7 <-> FSMC_NL    | PE15 <-> FSMC_D12    |
+-------------------+--------------------+
*/

/*-- GPIO Configuration ------------------------------------------------------*/

/* GPIOD configuration */
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource0, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource1, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource4, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource7, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource10, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource11, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource14, GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD, GPIO_PinSource15, GPIO_AF_FSMC);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
                           GPIO_Pin_7  |  GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 |
                           GPIO_Pin_14 | GPIO_Pin_15;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

  /* GPIOE configuration */
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource7 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource8 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource9 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource10 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource11 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource12 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource13 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource14 , GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE, GPIO_PinSource15 , GPIO_AF_FSMC);

  GPIO_InitStructure.GPIO_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_Init(GPIOE, &GPIO_InitStructure);


/*-- FSMC Configuration ------------------------------------------------------*/
  p.FSMC_AddressSetupTime = 0;
  p.FSMC_AddressHoldTime = 0;
  p.FSMC_DataSetupTime = 2;
  p.FSMC_BusTurnAroundDuration = 0;
  p.FSMC_CLKDivision = 0;
  p.FSMC_DataLatency = 0;
  p.FSMC_AccessMode = FSMC_AccessMode_A;

  FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;
  FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Enable;
  FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
  FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
  FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
  FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
  FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
  FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;

  FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);

  /* Enable FSMC Bank1_SRAM1 Bank */
  FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);
}

k= (*(__IO uint16_t*)(0x60000028));

k|= (*(__IO uint16_t*)(0x60000028))<<8;

k|= (*(__IO uint16_t*)(0x60000028))<<16;

k|= (*(__IO uint16_t*)(0x60000028))<<24;

作者: 阿南 時間: 2012-5-15 17:39
讀不到ID，說明和處理器的通訊都還不正常。可以先檢查電源，看芯片是否都已經正常工作，然后再檢查通訊問題。

作者: qftek 時間: 2012-11-29 11:54
確認bus時序是否正確，讀寫數據時address & data 對應的CMD信號是否正確？

深圳市僑峰科技有限公司（DAVICOM中國區總代理）
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