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Win 7 Hangs/Freezes when TUSB3410 is connected

Nura
Intellectual 285 points
Other Parts Discussed in Thread: TUSB3410

Hello Forum,

I have built a USB to Serial Cable using TUSB3410 two days back

The schematic diagram is attached

I'm using TUSB3410 without EEPROM and is powered by USB bus via a 3.3V regulator.

I have installed the TUSB3410 drives correctly on my Notebook (Acer -emachines E732Z, Intel Pentium P6100, 2Ghz, 1GB RAM)

which runs Win 7 32bit Ultimate. On Connecting, OS detects the cable as "TUSB3410 Device COM6", I'm able to open

Hyperterminal and  successfully ran loop test. My actual motive behind building this cable is to program "AT89C/52" MCU thru Laptop

USB port. for the above, i am using programming software called EZDL4.exe, This software scans for a com port and after it finds

one, detects if a suitable programmer board is connected to the com port, after that it sends selected hex file to the programmer

board. EZDL4 s/w configures the com port and communicates with the programmer board at 9600 bps, 8-N-1.

Till i build the USB-to Serial cable using TUBS3410, i was using CH340 based USB to Serial cable, the EZDL4.exe runs successfully

with the CH340 cable without any issues.  I've been using EZDL4 program since more than 5 years on my Desktop PC with real DB9

port with out any issues.


Now, the problem:

After connecting the TUSB3410 cable, i run EZDL4.exe, the program displays "Trying to connect to COM 6" and Hangs for ever

so much that even mouse which is connected to one of the USB ports becomes unresponsive and CTRL+ALT+DEL doesn't work in

this condition and the only resort left is to Power down the notebook using Power button held down for 5 secs.

The above has happened every time i tried running EZDL4.exe with TUSB3410 cable connected.

Surprisingly, Hyperterminal works well with TUSB3410 connected.

I'm using the latest drivers downloaded from the Product folder of TUSB3410 page.

I have checked the H/W for any shorts or mistakes but the board comes clean.

I don't understand why this is happening, One more thing i have noticed is the "ta-da" or "bing"  notification sound the Win7 makes

when the TUSB3410 cable is connected, The first "bing" can be heard as soon as the cable is conencted to tusb port and a "second"

bing is heard after say 1-2 secs, is this normal ? 

Third "bing" is heard when the Cable is pulled out of the USB port.

Here's the schematic diagram i'm using for connecting TUSB3410

7612.FCJ9QJ5AS2EYVZD2BR.pdf

Here's the programmer s/w i'am using

6201.EZDL4.zip

Here's the link to the above programming s/w

http://www.kmitl.ac.th/~kswichit/ez4/ez4.html

I'd greatly appreciate any help in this regard.

Arun

  • Intellectual 285 points

    Hello Forum,

    Here's an Update:

    I was able to replicate the same problem on my Desktop PC running Win 7 32 bit Ultimate.

    EZDL4.exe / Win7  freezes when trying to find TUSB3410 COM 6, No response to Mouse movements or CTRL+ ALT+ DEL, Only option is to Hard reset /power down.

    Interestingly, PL2303 and CH340 based USB to Serial Cables work flawlessly both on the PC and Laptop with the above program.

    Regards,

    Arun

  • in reply to Nura
    TI__Guru* 76130 points

    Hello Arun,

    We will try to replicate your issue and find a solution.

    Regards.

  • in reply to Elias Villegas M.
    Intellectual 285 points

    Hi Elias,

    Any Luck with the solution ?

    Regards

    Arun

  • in reply to Nura
    TI__Genius 11255 points

    Hello Arun, 

                    Taking a look in your schematic apparently everything is fine. We have been able to reproduce the problem in our side using our EVM board, but trying with other communication software (i.e. Hipper terminal) it work with our problem so apparently this problem is only related with the software that you are using please provide us more information about what is the tool behavior and verify at what point it is crashing.

     

    Regards,

    Roberto.

  • in reply to Roberto Diaz
    Intellectual 285 points

    Hi Roberto,

    Thanks for looking into my problem. 

    Yes, as i have mentioned in my first post, there is no problem while opening Hyperterminal.

    Win 7 freezes when i try to run EZDL4.exe program with TUSB3410 usb to serial cable is connected.

    EZDL4.exe on start up searches for available com ports on the system, and tries to open the found com port, in this case "COM 6", but from that point onwards the system becomes unresponsive and only way out is to Hard RESET/ POWER CYCLING.

    So, the system crashes when the EZDL4.exe starts and searches for com port with TUSB3410 cable connected.

    Without connecting TUSB3410 cable, EZDL4.exe searches for com ports and reports  "NO AVAILABLE COM PORT FOUND"

    But when i use other usb-to-serial cables (based on chips CH340 or PL2303) the EZDL4.exe program runs without a problem and i am able to download hex file to my programmer board.

    In my first post i have mentioned the source link of EZDL4.exe.

    EDL4.exe is a small standalone program for loading hex file into 8051 uC with a suitable programming board. It opens com port and sends hex file to the on board MASTER mcu which then programs the SLAVE mcu.

    I've been using EZDL4.exe since more than 5 years without a problem (both on desktop PC and Laptop)

    Regards,

    Arun