我用NCE4_2控制PCCARD，也是遇到同样问题，NCE4_2,NWE,NOE都没有电平变化 #define Bank_PCCARD_ADDR Bank4_PCCARD_ADDR #define Bank4_PCCARD_ADDR ((uint32_t)0x90000000) void PCCARD_Init(void) { FSMC_PCCARDInitTypeDef FSMC_PCCADRInitStructure; FSMC_NAND_PCCARDTimingInitTypeDef p; p.FSMC_SetupTime = 3; p.FSMC_WaitSetupTime = 3; p.FSMC_HoldSetupTime = 3; p.FSMC_HiZSetupTime = 0; FSMC_PCCADRInitStructure;.FSMC_Waitfeature = FSMC_Waitfeature_Disable; //禁止等待 FSMC_PCCADRInitStructure;.FSMC_TCLRSetupTime = 0x0; FSMC_PCCADRInitStructure;e.FSMC_TARSetupTime = 0x0; FSMC_PCCADRInitStructure;e.FSMC_CommonSpaceTimingStruct = &p; FSMC_PCCADRInitStructure;.FSMC_AttributeSpaceTimingStruct = &p; FSMC_PCCADRInitStructure;.FSMC_IOSpaceTimingStruct = &p; FSMC_PCCARDInit(&FSMC_CPLDInitStructure); FSMC_PCCARDCmd(ENABLE); } void PCCARD_WriteReg(uint16_t PCCARD_Reg, uint16_t PCCARD_RegValue) { /* Write 16-bit Index, then Write Reg */ *(__IO uint16_t *)(Bank4_PCCARD_ADDR) = PCCARD_Reg; /* Write 16-bit Reg */ *(__IO uint16_t *)(Bank4_PCCARD_ADDR) = PCCARD_RegValue; } 在主程序中调用 PCCARD_WriteReg（0x0008,0x0000)；之前已经做好管脚配置和时钟开启的工作了。 使用示波器监控NCE4_2和NWE的波形， 管脚配置和时钟开启后，NCE4_2和NWE都是高电平，这是正常的。但是执行PCCARD_WriteReg（0x08,0x0000)时，NCE4_2和NWE都没有电平变化，请问哪位大侠能指教是何原因呢？是否是#define Bank4_PCCARD_ADDR ((uint32_t)0x90000000) 的地址不正确？ 谢谢！
