13.2.6. Application communications
Full Angel requires use of at least one device driver for
its own communications requirements. If you are using Angel on a
board with more than one serial port, such as the PID board, you
can either:
use
Angel on one serial port and your own device on the other
use minimal Angel, which requires no serial port,
and use either or both of the serial ports for your application.
The PID Angel port provides examples of raw serial drivers.
Refer to the Angel source code for details of how these are implemented.
If you want to use Angel with your own hardware you must write your
own device drivers. Refer to Writing the device drivers for more information.
Figure 13.3 gives
an overview of the Angel serial device architecture.
Using the Thumb Debug Communication
Channel
You can use cin and cout in armsd and the channel viewer interface
to access the TDCC from the host. You can use the TDCC channel to
send ARM DCC instructions to the processor. No other extra channels
are supported.
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