electrical angle in Instaspin F28027

hi,

i am using a F28027 MCU with CCS6 and Motorware Proj_lab5b.

i am running a motor with F28027 and i need a electrical angle in my functions.

i searched the forum and see the this link :

but it didn't help me much. because this discussion is about getting electrical angle from encoder, but i don't use encoder. i use sensorless FOC in F28027?

how can i get a electrical angle from FOC without encoder?