User`s manual

OEM User’s Manual 17
2.3.1 Troubleshooting
It may be possible that your PC or laptop is unable to deliver enough current through the
USB connection if you are not using a separate power supply. The RCM5600W will not
operate in this case, and the solution is to use a separate 5 V power supply as described in
the Alternate Power Supply Connections section. Contact Technical Support (see
Section 2.4.1) or visit our Web site if you would like to get the universal AC adapter from
the Deluxe Development Kit.
If you receive the message Could Not Open Serial Port, check that the COM port
assigned to the USB cable was identified and set up in Dynamic C as described above.
This same error occurs when Windows has already allocated the COM port to another
process.
If you receive the message No Rabbit Processor Detected, the USB cable may
be connected to the wrong COM port, or the connection may be faulty. First, check both
ends of the USB cable to ensure that it is firmly plugged into the PC and the USB connec-
tor in the Interface Board. Ensure that the module is firmly and correctly installed in its
connector on the Interface Board.
If Dynamic C appears to compile the BIOS successfully, but you then receive a communi-
cation error message when you compile and load a sample program, it is possible that your
PC cannot handle the higher program-loading baud rate. Try changing the maximum
download rate to a slower baud rate as follows.
• Locate the Serial Options dialog on the “Communications” tab in the Dynamic C
Options > Project Options menu. Select a slower Max download baud rate. Click OK
to save.
If a program compiles and loads, but then loses target communication before you can
begin debugging, it is possible that your PC cannot handle the default debugging baud
rate. Try lowering the debugging baud rate as follows.
• Locate the Serial Options dialog on the “Communications” tab in the Dynamic C
Options > Project Options menu. Choose a lower debug baud rate. Click OK to save.
Press <Ctrl-Y> to force Dynamic C to recompile the BIOS. You should receive a BIOS
successfully compiled
message once this step is completed successfully.