USBSTICK works without a PC?

Hi Nemanya,

When you load a program from Code Composer the code is getting placed directly into RAM, where it is read and executed by the DSP. Anything in RAM is volatile and will be lost when you remove power from the DSP.

If you want the DSP to run your program at power-on, you will have to load your code into the EEPROM. At power-on, the DSP’s bootloader will find your program in EEPROM and copy it into the RAM for execution.

You will need to use “hex55.exe” to convert the .out file to a binary file. Then you will need to run an EEPROM programmer on the DSP to write the binary file into the DSP’s EEPROM.

For the C5505, you must use “hex55.exe” version 4.3.3 or later. We are in the middle of releasing this version and the EEPROM programmer tool to the public. It will be available soon, and I will post the information here when it is available.

In case you need the tools urgently, please contact your local TI person (sales or FAE) and let the local TI person contact me.

To learn more about the bootloader, see the TMS320VC5505 Data Sheet (http://www.ti.com/lit/gpn/tms320vc5505) in section 4.4

To learn more about “hex55.exe”, see the TMS320C55x Assembly Language Tools Users Guide (http://www-s.ti.com/sc/techlit/spru280) in section 14

Similar Forum Post: http://e2e.ti.com/forums/p/10616/44507.aspx

Hope this helps.

Thanks,

Mark

Hi Mark,

I also need to load my code into EEPROM.

Can you give us an estimate as to when you expect the information to be available?

Milton Cram

If number of respondents counts, please count me as needing this fairly urgently. I'll contact my FAE but I have an app that is being demo'd on the ezDSP board minus the computer emulation. Thanks.

Any news on the programmer tool?

How do I get hex55.exe version 4.3.3 or later? I currently have 4.3.2.

Regards

Ricco

Thanks.  It was the new version of hex55.exe I was missing. 

Why is this not released with CCS4.0 (or the update)? 

Best Regards,

Ricco

Hi,

The default bootloader program provided with the eZdsp tool, plays two tones and blinks the LED. Where is the code for this program? What I want to see is, what are the other things that this program does. Does it configure some registers? Does it initialize the PLL? If I want the eZdsp to bootload from my program in EEPROM that I load using the above procedure, I should make sure that my program also has all the configurations and initializations. I do not think that if I take the AIC3204 test program, compile it, create .bin from .out and load to EEPROM, the eZdsp can run that program on power up, because PLL and other things might not be initialized. Can someone please tell what are the minimum things to include in a program for proper bootloading.

Thanks in advance,

Rijurekha

Continuing my query above, I understand that when I do Target->Connect from CCS, th following function in GEL file gets executed.

OnTargetConnect()
{
    GEL_Reset();
    Peripheral_Reset();
    ProgramPLL_100MHz();
    GEL_TextOut("Target Connection Complete.\n");
}

Should I include the above functions in the C program that I write, so that the program can run on the eZdsp on power on, without a PC?

In the GEL file there are several other things also, like C5505_MapInit() . I am not sure where they are called from. 

Thanks,

Riju

I'm not sure where the source is for the program that is preloaded on the eZdsp.  Maybe someone else can provide that information.

You are correct that the actions in the OnTargetConnect() gel function need to be incorporated into stand alone code.  In the case you referenced above you can ignore GEL_Reset() - This resets the processor and you don't need to repeat that in your code since you will be operating from a Power On condition.  And the GEL_TextOut() isn't required - CCS only command.  So, the remaining 2 commands need to be incorporated into your code.

Regards.