Thread: how to control hu

how to control hu if i have datasheet and diagram:

key board pin outs:
1-miso
2-mosi
3-scl
4-cs
5-ack/req
6-illum
7-gnd
8-on key
9-digit gnd
10-us1
11-reset
12-nc

blaupunkt c31
how to hack this and embed into rr