|
Project In a time where 80%
of microprocessors at work are on embedded systems,
three students start the most important project on their life:
capacity a control computer called RCX, equiped
with a revolutionary Operational System called EPOS, for
serial infrared comunication.
Technology
-
Lego RCX using a Hitachi H8/300
CPU.
-
Software used to transfer
software to the RCX.
-
GCC compiler.
Conditions
Solutions
- An interface to the infra red port
provided via a driver.
- A network protocol stack which can
handle the communication.
RCX infra red
ports
The RCX uses memory mapped i/o which
means that communication through ports is done through
specific memory areas. When ports receive an input signal,
the data is stored in a data register which is accessed by
the cpu as normal
memory. Each port has a data direction register (DDR) that
selects between input or output. |