how to get 0-360 degree binary information from pc

asunca · Joined: 09 Sep 2005 Posts: 36

i want to get 0-360 degree information from pc via serial port. but i dont know how to get the bytes into pic. this will not be an interrupt but polling. should i send ascii for example 268 degree as ascii2,ascii6,ascii8? or a different way (ie.using 9bits maybe) . using software control how is this accomplished? this will control a dc geared motor with encoder..
and the visual basic program?? how can i write it?

* datasheet tells built in usart can buffer up to 3 bytes..(16f877)

kender · Joined: 09 Aug 2004 Posts: 768 Location: Silicon Valley

asunca · Joined: 09 Sep 2005 Posts: 36

i dont think interrupt is necessary. i have a 8channel servo controller downloaded from web. i would like to benefit from it in my project because i dont know visual basic. i know how it works (one byte command, one byte data). i need the second byte only. but it is one byte and 0-255 degree can be represented. i want 0-360 and i dont know to get the byte using getc().

kender · Joined: 09 Aug 2004 Posts: 768 Location: Silicon Valley