I use to program with c# or c++ (at moderate level). Now i want to play with hardware, like running a small motor with a click in software, or blink a bulb with it, or even create robot like thing with it. I don't want to mess up with Assembly or other low level language.
Is there any tool or programming language to play with different electronic devices? Any advices or steps to start with?
I think Arduino is the sort of thing you're after. Find out more.
Or possibly Lego Mindstorms. :)
I think learning Assembler dialects will be the basis of a lot of fun for you.
You should check out Arduino: http://en.wikipedia.org/wiki/Arduino
A classic answer would be the BASIC Stamp from Parallax. They sell it as a raw component, as well as in various educational and project packages.
It is based on a PIC Microcontroller with a flavor of BASIC in its ROM.
Wikipedia has a pretty extensive list of hardware programming languages at the bottom of this article.
The only one I've personally used was AHPL, which is a variant of APL (the infamous write-only language). We used it for my Computer Architecture course back in my undergrad days.
Have you considered the .NET Micro Framework ?
And FEZ boards. From the website above:
FEZ Domino and FEZ Mini are very small (open source) boards targeted for beginners. They are based on the USBizi chipset and all it's features. FEZ offers many peripherals, such as USB host and SD interface, not available with hobbyist-targeted boards. Even though FEZ is targeted for beginners, it's also a low-cost starting point for professionals wanting to explore NETMF (.NET Micro Framework).
The most commonly used language for embedded systems is C followed by C++, so your existing skills are relevant, but will perhaps need some adaptation to deal with teh resource and real-time constraints of electronic control systems.
What will your target platform be? There are many suitable micro-controllers and development boards. I suggest that you start with something with reasonable performance and resource availability; an ARM 7 or Cortex-M3 based board for example. This will better support C++ than most 8 bit platforms.