请问一下有没有STM32 V2开发板的SRAM配置

yongshi01

我的V2开发板配置测试不通过，读出来都是0xFF，是没配置对吗？有用到SRAM的吗？




/*******************************************************************************
* Function Name  : FSMC_SRAM_Init
* Description    : Configures the FSMC and GPIOs to interface with the SRAM memory.
*                  This function must be called before any write/read operation
*                  on the SRAM.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void FSMC_SRAM_Init(void)
{
    FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
    FSMC_NORSRAMTimingInitTypeDef  p;
    /*-- FSMC Configuration ------------------------------------------------------*/
    p.FSMC_AddressSetupTime = 1;
    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_NORSRAM3;
    FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
    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);
    FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
    FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
    /* Enable FSMC Bank1_SRAM Bank */
    FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM3, ENABLE);
    FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
}

yongshi01

搞定了，原来是GPIO没配置