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User’s Manual 9

2.3 Run a Sample Program

If you already have Dynamic C installed, you are now ready to test your programming

connections by running a sample program.

The RCM3200 runs at 44.2 MHz, and has a fast program execution SRAM to ensure that

the memory where any programs run can handle the higher clock speed. In order to run

Dynamic C applications in the fast SRAM, you will need to set the compiler to run the

application in the program execution SRAM by selecting

Code and BIOS in Flash, Run

in RAM

from the Dynamic C Options > Project Options > Compiler menu.

If you are using a USB port to connect your computer to the RCM3000 module, choose

Options > Project Options and select “Use USB to Serial Converter” under the

Communications tab.

Find the file

PONG.C, which is in the Dynamic C SAMPLES folder. To run the program,

open it with the File menu (if it is not still open), compile it using the Compile menu, and

then run it by selecting Run in the Run menu. The STDIO window will open and will dis-

play a small square bouncing around in a box.

This program shows that the CPU is working. The sample program described in

Section 6.5, “Run the PINGME.C Sample Program,” tests the TCP/IP portion of the board.

2.3.1 Troubleshooting

If Dynamic C appears to compile the BIOS successfully, but you then receive a communi-

cation error message when you compile and load the 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 > Project 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 > Project Options >

Communications menu. Choose a lower debug baud rate.

If there are any other problems:

• Check to make sure you are using the PROG connector, not the DIAG connector, on

the programming cable.

• Check both ends of the programming cable to ensure that they are firmly plugged into

the PC and the programming port on the RCM3200.

• Ensure that the RCM3200 module is firmly and correctly installed in its connectors on

the Prototyping Board.

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