Forum Post: RE: AM335x - displaying the contents of registers from a user application using READ_REGISTER_ULONG()

Additional to above -  the code I'm using in C#

    [DllImport("ceddk.dll", EntryPoint = "READ_REGISTER_ULONG")]           
    //ULONG READ_REGISTER_ULONG(__in volatile const ULONG * const  Register);
    public static extern uint read_reg_ulong(uint pRegister);

...

    //physical address = 0x48030000+0x12C = (MCSPI_CH0CONF McSPI channel 0 configuration register)
    //from the SPI driver the virtual address = 0x9003012C
    uint reg_addr = 0x9003012C;
    uint reg_contents = read_reg_ulong(reg_addr);

    //reg_contents now has correct data that was written to MCSPI_CH0CONF