Rabbit BL2020, Руководство пользователя

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User’s Manual 11
2.3 Starting Dynamic C
Once the BL2000 is connected to your PC and to a power source, start Dynamic C by
double-clicking on the Dynamic C icon on your desktop or in your
Start menu.
Dynamic C defaults to using the serial port on your PC that you specified during installa-
tion. If the port setting is correct, Dynamic C should detect the BL2000 and go through a
sequence of steps to cold-boot the BL2000 and to compile the BIOS. (Some versions of
Dynamic C will not do the initial BIOS compile and load until the first time you compile a
program.)
If you are using a USB port to connect your computer to the BL2000, choose
Options >
Project Options
and select “Use USB to Serial Converter.” Click
OK
.
If you receive the message
No Rabbit Processor Detected
, the programming
cable may be connected to the wrong COM port, a connection may be faulty, or the target
system may not be powered up. First, check both ends of the programming cable to ensure
that it is firmly plugged into the PC and the programming port.
If there are no faults with the hardware, select a different COM port within Dynamic C.
From the
Options
menu, select
Communications
. Select another COM port from the list,
then click OK. Press <Ctrl-Y> to force Dynamic C to recompile the BIOS. If Dynamic C
still reports it is unable to locate the target system, repeat the above steps until you locate the
active COM port. You should receive a
Bios compiled successfully
message
once this step is completed successfully.
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 in the Dynamic C Options > Communications
menu. Select a slower Max download baud rate.
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 in the Dynamic C
Options > Communications
menu. Choose a lower debug baud rate.