Recursive functions

[ghost]

You keep calling functions one after the other, things keep getting pushed into the stack, but no function returns. Without the 1s delays, this code would cause a stack overflow pretty quickly.
You should just set the ready flag back to 1 in the second function and let the infinite loop in main do the calling of the scheduler.

[smartrtos]

Hi David, you are right, but this is an example to show how an OS works :)