【已解决】VCT6 FSMC NADV无信号输出，源码已贴，求指点。。

只看该作者 · 2014-12-30 18:14

本帖最后由 JK_alvin 于 2015-1-4 11:27 编辑

STM32F103VCT6，打算用FSMC与cpld通信，现在利用A0~A23以及NWE、NOE、NE、NADV来连接，现象是：
①STM32f101VC的低16位地址是和数据线复用的，目前NADV信号一直维持高电平不变；
②数据地址线波形感觉异常不是方波，电平拉高以后，下降沿是斜坡220us左右变低（有点像接了电容）；

#define GPIO_PinD_Data (GPIO_Pin_14| GPIO_Pin_15| GPIO_Pin_0 | GPIO_Pin_1 |\
                     GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10)

#define GPIO_PinE_Data (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)

#define GPIO_PinD_Addr (GPIO_Pin_11| GPIO_Pin_12| GPIO_Pin_13)

#define GPIO_PinE_Addr (GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_6)

#define GPIO_PinB_NADV  GPIO_Pin_7
#define GPIO_PinD_NWE GPIO_Pin_5
#define GPIO_PinD_NOE GPIO_Pin_4
#define GPIO_PinD_NE1 GPIO_Pin_7

/* GPIOD FSMC数据/地址线初始化 */
GPIO_InitStructure.GPIO_Pin = GPIO_PinD_Data | GPIO_PinD_Addr | GPIO_PinD_NWE |GPIO_PinD_NOE | GPIO_PinD_NE1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_Init(GPIOD, &GPIO_InitStructure);

/* GPIOE FSMC数据/地址线初始化 */
GPIO_InitStructure.GPIO_Pin = GPIO_PinE_Data | GPIO_PinE_Addr;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_Init(GPIOE, &GPIO_InitStructure);

/* GPIOB FSMC 锁存线初始化 */
GPIO_InitStructure.GPIO_Pin = GPIO_PinB_NADV;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_Init(GPIOB, &GPIO_InitStructure);

void FSMC_Configuration()
{
FSMC_NORSRAMInitTypeDef       FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef  FSMC_ReadWriteTimingStruct;
//-- FSMC 时序配置 ------------------------------------------------------
FSMC_ReadWriteTimingStruct.FSMC_AddressSetupTime    = 0x0a;
FSMC_ReadWriteTimingStruct.FSMC_AddressHoldTime    = 0x0a;
FSMC_ReadWriteTimingStruct.FSMC_DataSetupTime       = 0x0a;
FSMC_ReadWriteTimingStruct.FSMC_BusTurnAroundDuration = 0x02;
FSMC_ReadWriteTimingStruct.FSMC_CLKDivision          = 0x00;
FSMC_ReadWriteTimingStruct.FSMC_DataLatency          = 0x00;
FSMC_ReadWriteTimingStruct.FSMC_AccessMode          = FSMC_AccessMode_D;

FSMC_NORSRAMInitStructure.FSMC_Bank                = FSMC_Bank1_NORSRAM1;
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux       = FSMC_DataAddressMux_Enable;
FSMC_NORSRAMInitStructure.FSMC_MemoryType          = FSMC_MemoryType_NOR;
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth    = FSMC_MemoryDataWidth_16b;
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode    = FSMC_BurstAccessMode_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_AsyncWait          = FSMC_AsyncWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_WriteBurst          = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &FSMC_ReadWriteTimingStruct;
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct    = &FSMC_ReadWriteTimingStruct;

FSMC_NORSRAMInit (&FSMC_NORSRAMInitStructure);

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

谢谢。。。。

【1】FSMC_WrapMode_Disable，在设置了非对齐模式下，扩展后的地址必须考虑(MCU地址会向右一位)；
【2】我打开了systick，这会影响到脉冲的波形，具体原因还在检查；

谢谢 @mmuuss586 提供的资料！！！