can i use intel edison ？

Each different hardware interface requires a HAL realtime component. Nobody has contributed one for Intel Edison, and I don't think any existing components are suitable. You could start here to learn how to implement a HAL realtime component with the halcompile tool: linuxcnc.org/docs/2.7/html/hal/comp.html

There is some interesting information here:
www.emutexlabs.com/project/215-intel-edi...n-multiplexing-guide

Though This might be more relevant to writing a HAL driver:

www.i-programmer.info/programming/hardwa...pped-io.html?start=1

The Edison IO can do GPIO, PWM and ADC. It would actually be pretty neat to have a HAL driver.

badao520 wrote:

it looks like a big work. haha~

it might not be that difficult, but some significant digging about might be needed in the existing driver code.
I think that a HAL driver probably wants to replace rather than utilise the code being used in the examples.

The basic code to read or write a value to the Edison pins is just lines 646 to 675 here:
github.com/intel-iot-devkit/mraa/blob/ma...intel_edison_fab_c.c