Vahub 
Hi Friends, I have a SCB6410 SDK board and I want to generate a Sine Wave or Pulse on DAC. To do this, I use 8-bit DAC and I handled it successfully with AVR. But now, I want to connect it to 6410 GPIO and run it. On the other hand, I'm beginner on windows programming and I have not any idea on that. I know that I have to connect DAC to GPIOs and after that work with them. I have a DLL file for GPIO driver and a sample code in C#. but I don't know how to use them. Please let me know how can I generate my signal. Actually, I want to know 1- How can I use driver in windows CE. (My supplier said that: 1) copy GIODriver.dll to Files directory in your BSP. 2) add to platform.bib file: GIOdriver.dll $(_FLATRELEASEDIR)\GIODriver.dll NK SHMK 3) add to platform.reg : [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\GIOdriver] "Prefix"="GIO" "Dll"="GIOdriver.dll" "Order"="200" ) 2- How to check that GPIO work correctly. Please help me. Thanks in Advance