Why the External Model of c28x_serial_ext.slx doesn't work?

Hello, every one.

I'm tring test c28x_serial_ext.slx exmple with my F28335 eZdsp board, with MATLAB 2015a. But I get the error message :

    Unable to connect to the 'TI Delfino F2833x' target for 'test3_serial_ext'.

The only difference between my test3_serial_ext model and the exmple c28x_serial_ext.slx provided in MATLAB 2015a is that in the "Target Hardware Resources->External mode" setting，I used COMPort COM3 instead of the default value COM10.

COM3 is a USB-SERIAL CH340 com port in my host computer. I'm wondering that Simulink even doesn't download the test3_serial_ext.out to my eZdsp board:

I first download a standalone executable model to eZdsp which blink the DS2 LED in the board.

While during I run the test3_serial_ext model under external mode, the LED never stopped. Does that mean simulink not download the test3_serial_ext.out to the eZdsp board and run it?

Any one can tell me why I can't run my test3_serial_ext in external mode ?

Thanks.

[shiming liu]

In the Diagnostic Viewer, I found an message:

* Connecting to target... SEVERE: C28xx: Error connecting to the target: (Error -600 @ 0x0) A required dynamic library could not be located. The library isn't on the search path. (Emulation package 5.1.73.0)

But it didn't tell which library, so I don't know how to fix it :(

[Walter Roberson]

You may need to use Dependency Walker

Answer 1

[Sumith Sekharan]

Hi Shiming Liu,

By default example model is configured for F28335 control card with XDS 100 debug interface. If you are using the eZDSP board, select the "$(TARGET_ROOT)/CCS_Config/f28335_eZdsp.ccxml" as the CCS configuration file (Hardware Implementation-> Target Hardware Resources-> Build options -> CCS hardware configuration <file:)>.

If this does not fix the issue please try to connect to your hardware using CCS.

Hope this helps. Thanks, Sumith

[shiming liu]

Great! the problem solved!

BTW, too many traps for beginers:(

Answer 2

[Ahmet yüksel]

How to connect ezdsp f28335 external mode? Which changed you properly switches on board

Answer 3

[Ahmet yüksel]

How to connect ezdsp f28335 external mode? Which changed you properly switches on board

Answer 4

[Venkatesh Chilapur]

For F28335 eZdsp board, the USB JTAG emulation does not support serial operation. Hence, along with USB that is used to download the program, user also needs to connect a serial cable from the DB9 connector on the board for SCI-A to the PC COM port to run the external mode. The PC COM port# is COM1.

I could run the external mode on this board by doing this connection. The default settings for SW2 switch were in place.

[Ahmet yüksel]

What is program name downloaded?

Answer 5

[Venkatesh Chilapur]

program name: 'c28x_serial_ext'

Please ensure you have a 'DB9 Male to DB9 Female 9C Serial Straight Thru Cable' for serial connection in case of F28335 eZdsp board.

And SW2 switch position are in default state.

[Ahmet yüksel]

Can you give me sample link please thrue cable please

Answer 6

[Ahmet yüksel]

ı use this cablo(https://n11scdn.akamaized.net/a1/450/elektronik/kablolar/usb-to-ttl-uart-seri-kablo-pl2303hx-1m__0661419781734161.jpg) rx to tx and tx to rc is connected . and then this picture(attached) is given by device manager

ı select com 1 port and then this problem is still continiues

Answer 7

[Venkatesh Chilapur]

Since you are using USB2serial, the COM3 would be your port. Also, try connecting the TX-TX and Rx-Rx and see if this helps. Alternatively, you can first start with SCI operation and ensure basic SCI operation and then move to external mode.

Answer 8

[Ahmet yüksel]

as you said, ı tried tx-tx and rx-rx finally the error is continues . how to firstle use sci operation may you help me please

Answer 9

[Venkatesh Chilapur]

You can work from code composer and the serial example from controlsuite.

[Ahmet yüksel]

how to use ccsv7 via external mode with control suite help me

Answer 10

[Ahmet yüksel]

tmdscockf28335 is comply with external mode ? instead of ezdsp