【求助】请教一下各位大神GD32F450移植sram问题

只看该作者 · 2021-8-26 09:23

本人把EXMC里面的psram的相关代码从stm32f427移植到GD32F450的过程出现问题，初始化以后内存地址里是有规律的乱码，写数后立刻被覆盖。官方demo里面只有NAND和sdram，没有norram相关的。修改的初始化代码如下。注释的是原来stm32的，感觉都对应的很好。不知道有没有大神有这方面的经验，谢谢
// FMC Configuration

    p.asyn_address_setuptime = 2;
    p.asyn_address_holdtime = 1;
    p.asyn_data_setuptime = 2;
    p.bus_latency = 1;
    p.syn_clk_division =0;
    p.syn_data_latency = 0;
    p.asyn_access_mode = EXMC_ACCESS_MODE_A;

//    p.FMC_AddressSetupTime = 2;
//    p.FMC_AddressHoldTime = 1;
//    p.FMC_DataSetupTime = 2;
//    p.FMC_BusTurnAroundDuration = 1;
//    p.FMC_CLKDivision = 0;
//    p.FMC_DataLatency = 0;
//    p.FMC_AccessMode = FMC_AccessMode_A;
//
//exmc_norsram_deinit(EXMC_BANK0_NORSRAM_REGION2);

FMC_NORSRAMInitStructure.norsram_region = EXMC_BANK0_NORSRAM_REGION2;
    FMC_NORSRAMInitStructure.address_data_mux = DISABLE;
    FMC_NORSRAMInitStructure.memory_type = EXMC_MEMORY_TYPE_PSRAM;
    FMC_NORSRAMInitStructure.databus_width = EXMC_NOR_DATABUS_WIDTH_16B;
    FMC_NORSRAMInitStructure.burst_mode = DISABLE;
    FMC_NORSRAMInitStructure.asyn_wait = DISABLE;
    FMC_NORSRAMInitStructure.nwait_polarity = EXMC_NWAIT_POLARITY_LOW;
    FMC_NORSRAMInitStructure.wrap_burst_mode = DISABLE;
    FMC_NORSRAMInitStructure.nwait_config = EXMC_NWAIT_CONFIG_BEFORE;
    FMC_NORSRAMInitStructure.memory_write = ENABLE;
    FMC_NORSRAMInitStructure.nwait_signal = DISABLE;
    FMC_NORSRAMInitStructure.extended_mode = DISABLE;
//  FMC_NORSRAMInitStructure.FMC_WriteBurst = FMC_WriteBurst_Disable;
FMC_NORSRAMInitStructure.write_mode = EXMC_ASYN_WRITE;//不可以用EXMC_SYN_WRITE
    FMC_NORSRAMInitStructure.read_write_timing = &p;
    FMC_NORSRAMInitStructure.write_timing = &p;

//    FMC_NORSRAMInitStructure.FMC_Bank = FMC_Bank1_NORSRAM3;
//    FMC_NORSRAMInitStructure.FMC_DataAddressMux = FMC_DataAddressMux_Disable;
//    FMC_NORSRAMInitStructure.FMC_MemoryType = FMC_MemoryType_PSRAM;
//    FMC_NORSRAMInitStructure.FMC_MemoryDataWidth = FMC_NORSRAM_MemoryDataWidth_16b;
//    FMC_NORSRAMInitStructure.FMC_BurstAccessMode = FMC_BurstAccessMode_Disable;
//    FMC_NORSRAMInitStructure.FMC_AsynchronousWait = FMC_AsynchronousWait_Disable;
//    FMC_NORSRAMInitStructure.FMC_WaitSignalPolarity = FMC_WaitSignalPolarity_Low;
//    FMC_NORSRAMInitStructure.FMC_WrapMode = FMC_WrapMode_Disable;
//    FMC_NORSRAMInitStructure.FMC_WaitSignalActive = FMC_WaitSignalActive_BeforeWaitState;
//    FMC_NORSRAMInitStructure.FMC_WriteOperation = FMC_WriteOperation_Enable;
//    FMC_NORSRAMInitStructure.FMC_WaitSignal = FMC_WaitSignal_Disable;
//    FMC_NORSRAMInitStructure.FMC_ExtendedMode = FMC_ExtendedMode_Disable;
//    FMC_NORSRAMInitStructure.FMC_WriteBurst = FMC_WriteBurst_Disable;
// FMC_NORSRAMInitStructure.FMC_ContinousClock = FMC_CClock_SyncOnly;
//    FMC_NORSRAMInitStructure.FMC_ReadWriteTimingStruct = &p;
//    FMC_NORSRAMInitStructure.FMC_WriteTimingStruct = &p;
    exmc_norsram_init(&FMC_NORSRAMInitStructure);
exmc_norsram_consecutive_clock_config(EXMC_CLOCK_SYN_MODE);
    exmc_norsram_enable(EXMC_BANK0_NORSRAM_REGION2);//FMC_NORSRAMCmd(FMC_Bank1_NORSRAM3, ENABLE);

【求助】请教一下各位大神GD32F450移植sram问题

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