made by: kangkai
data:2008.11.23
this one is used to test arm7 str71x.
use a led to test gpio.
a---------P0.0
b---------P0.1
c---------P0.2
d---------P0.3
e---------P0.4
f---------P0.5
g---------P0.6
just run it and you will see the led to show 0-9 all the time.
