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Getting Started with ADSP-BF548 EZ-KIT Lite 3-5
Using ADSP-BF548 EZ-KIT Lite Peripherals
• A rotary switch for the up/down counter
• A 4 x 4 keypad matrix for the keypad interface
• An audio codec for one of the SPORTs
• Push buttons and LED indicators for the GPIO pins
In addition, the EZ-KIT Lite board includes a 10/100 Ethernet controller
with associated magnetics and RJ-45 socket. The controller connects to
the processor’s asynchronous memory bus. See the ADSP-BF548 EZ-KIT
Lite Evaluation Manual for a full list of the board features.
In the remainder of this and following chapters, we will learn how to use
some of these peripherals and devices using VisualDSP++.
Using ADSP-BF548 Peripherals on the
EZ-KIT Lite
Writing code for the simpler peripheral interfaces, such as the GPIO pins,
is a straightforward process. Writing code for the data transfer interfaces,
such as ATA/ATAPI-6 or EPPI, is a more complex and time-consuming
process because it requires additional management of DMA channels and
interrupt handling.
Analog Devices supplies software to aid the use of most of the peripherals
on a Blackfin EZ-KIT Lite. The software is structured as two packages:
the system services library (SSL) and device drivers (DDs); when referred
to as a whole, the software is known as SSL/DD.