1. IN 2803x we can use eQEP Edge Capture Unit to realize low speed measurement.
And the equation is v(k)=X / [ t(k) - t(k-1) ] = X / ΔT ---------------------(1)
Where. X - Unit position is defined by integer multiple of quadrature edges
ΔT - Elapsed time between unit position events
v(k) - Velocity at time instant "k"
This is called T method.
2. Now I want to realize T method with 2810.
My thought is that using Cputimer1(In my program Cputimer0 has been taken up) and CAP Interrupt to realize T method.
In this case,I have to improve my hardware to connect DSP's CAP pin with encoder's QEPA pin.
But My hardware has been fixed.
Could anyone offer ways better than that?
Thanks a lot!