STM32F4与FPGA通过FSMC通信读写时序

2019-07-20 13:44发布

相同的读写程序片选时序不同[mw_shl_code=applescript,true]void FSMC_SRAM_WriteBuffer(uint16_t* pBuffer,uint32_t WriteAddr,uint32_t n)
{
// WriteAddr = WriteAddr <<1 ;  //FSMC′æ′￠Æ÷êy¾Y¿í¶èéèÎa16bitê±￡¬×üÏßμØÖ·×Ô¶ˉóòòÆ1Î»￡»òò′ËóëFPGAí¨DÅê±½«μØÖ·Î»Ïè×óòÆ1Î»¡￡
for(;n!=0;n--)
{
WriteAddr = WriteAddr <<1 ;
*(vu16*)(Bank1_SRAM2_ADDR+WriteAddr)=*pBuffer;
WriteAddr = WriteAddr >>1 ;
WriteAddr++;
(*pBuffer)++;
}
}

void FSMC_SRAM_ReadBuffer(uint16_t* pBuffer,uint32_t ReadAddr,uint32_t n)
{
// ReadAddr = ReadAddr <<1 ;  //¶áóëD′Ïàí¬
for(;n!=0;n--)
{
ReadAddr = ReadAddr <<1 ;
*pBuffer++=*(vu16*)(Bank1_SRAM2_ADDR+ReadAddr);
ReadAddr = ReadAddr >>1 ;
ReadAddr++;
}
} [/mw_shl_code]

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