RE: FLASH Programming on C6748 DSP

Hi long gao,

After you flashed the program successfully, you have to set the boot switch settings in SPI boot mode :

SW1 [1:4] - 0000

I have attached the procedural document for your reference. Particularly refer section : SPIWriter Utility (Flash Programmer)

/cfs-file/__key/communityserver-discussions-components-files/791/1072.Booting_5F00_from_5F00_flash.pdf

Thank you, really appreciate it. I think i have download the app img successfully. but it never boot good. so i want to ask you how to do this? i give you my app code in the attachment, please have a look.0247.test.rar

Long Gao,

You have said twice that you have flashed the SPI Flash successfully. What exactly does that mean? Does it mean that you have verified it is correct or that the spiwriter says it completed successfully?

Are you able to change the boot mode on your custom board? If you set it to SPI boot mode, do you see activity on the SPI lines after a reset?

long gao said:

Is it because i haven't reset the chip before i download the spiwriter? How to reset it?

You only need to reset the chip before trying to boot from the Flash, not before programming the SPI Flash device.

Regards,
RandyP

Firstly, i download it under the spiboot mode, when i poweroff,then poweron my board , nothing happen.

secondly , i change the boot mode to the simulition debug mode before i download the app, then i change the boot mode to the spi mode, it works.

so, my question is :is the steps above is necessary definitely?

when i download the app,if it is on uart mode, then i change the mode to spi mode, can it boot successfully?or i just can download the app under the simulition debug mode?

Yes,this is what i mean. thank you again.

OK. It is like this:

    1. We set the boot mode to the simulication model

    2.  Then we write out .asi image to it by the spiwriter

    3. finally we change the mode to the spio boot mode by your suggestion, and it works

long gao,

That sounds good.

Good going, keep it up !!!