CYUSB3KIT-001 EZ-USB FX3 Development Kit Guide, Doc. #: 001-70237 Rev. *C
23
Getting Started
3. Choose
Setup > Serial Port
and adjust the baud rate to 115,200. Then press
OK
(
Figure 2-21
).
Figure 2-21. Select 115,200 baud rate
4. Load and run the code as in the first example. To recap: If the USB Control Panel is not already
running, choose
CY Tools>Control Center
, press the board RESET button, choose
Program>FX3>RAM
, navigate to the .img file in your Workspace and load the program. You
should see a screen similar to that shown in
Figure 2-22
. Every time you press the push button
an interrupt-driven function displays the GPIO[53] pin state. This simple application does not de-
bounce the button, so you may see several messages per button push. If you have not
connected a push button to GPIO[53] then these debug messages can be observed by
connecting this GPIO to ground using a jumper wire.
Figure 2-22. FX3 Sending Debug Messages
FX3 firmware sends serial debug messages using the
CyU3PDebugPrint
function, for example
for the sign-on message,
CyU3PDebugPrint (4, “\r\n FX3 Initialized with Serial
Debug\r\n\r\n”)
;.
The first parameter sets a debug message priority. Your program can set a priority threshold to
enable some messages and disable others.
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