huaiqiao

把“ huart1.Init.BaudRate = 9600;”中的9600改成38400不就行了

叶孤城

本帖最后由 yechengyuan 于 2016-9-25 15:36 编辑 我也遇到同样问题，读写的时候，地址，数据都有波形，clk，nwe等等都是没有信号，没有找到原因 我是用stm32cube 生成的代码，不知道哪里出错 /* FMC initialization function */ static void MX_FMC_Init(void) {   FMC_SDRAM_TimingTypeDef SdramTiming;   /** Perform the SDRAM1 memory initialization sequence   */   hsdram1.Instance = FMC_SDRAM_DEVICE;   /* hsdram1.Init */   hsdram1.Init.SDBank = FMC_SDRAM_BANK1;   hsdram1.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9;   hsdram1.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_13;   hsdram1.Init.MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_16;   hsdram1.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;   hsdram1.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_2;   hsdram1.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;   hsdram1.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2;   hsdram1.Init.ReadBurst = FMC_SDRAM_RBURST_DISABLE;   hsdram1.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;   /* SdramTiming */   SdramTiming.LoadToActiveDelay = 3;   SdramTiming.ExitSelfRefreshDelay = 12;   SdramTiming.SelfRefreshTime = 3;   SdramTiming.RowCycleDelay = 8;   SdramTiming.WriteRecoveryTime = 2;   SdramTiming.RPDelay = 3;   SdramTiming.RCDDelay = 3;   if (HAL_SDRAM_Init(&hsdram1, &SdramTiming) != HAL_OK)   {     Error_Handler();   } }

wamcncn

学习一下，CUBE方面的资料太少了

feiante-155820

在同一个口线中断后，进行判断即可。