Hi
Came across this utility/routine for the Arduino, looks great. I am still digesting the program as I have very basic knowledge of C language and specifically some of the commands used in this routine.
My question is this;
I would like to modify this to be able to generate 2 sine wave outputs, same frequency, but one of the sine wave needs to be shifted 90 degrees from the other. Can it be modified for this? Some help in finding where explanations of all these particular commands could be found would be useful. I imagine that the commands to drive the second sine wave would need to be contained in the interrupt service routine.
I think I should be able to use the same sine value table but shifted by 64 values for an out of phase wave of 90 degrees.
Thanks for any help.