transfer data from computer to cyclone II

Hello Clark,

the best solution depends on the amount of data and wich kind of memory it is destinated for. To write embedded FPGA RAM, in-system-memory-editor through JTAG is probably the easiest way. Also external memory could be accessed via a virtual JTAG interface. Other interfaces could be used depending on the target systems hardware equipment: Printer port, RS232, SPI, I2C...

Regards,

Frank

Can i ask u how to write embedded FPGA RAM ?

and i also hear about the audio codec (WM8731L), does anyone know how to connect it ? i read the manual , they just introduce the WM8731.Actually i did not understand so much.:o

regards,

Clark

Hello Clark,

the altsyncram Megafunction can be instantiated with the ENABLE_RUNTIME_MOD option. It allows to access the RAM with the Quartus "In-System Memory Content Editor", e. g. up/downloading data from/to a file. See the Quartus software manual for details.

Regards,

Frank

thank Frank,

Now i am trying to use it .

Btw, I am reading the manual of the DEI , they introduce about the DE control panel . It teach me how to use the control panel to control the FPGA . From them i knew how to write into the flash memory. From there , i have some questions , and also trying to find information for it , but i just list out here so if anyone know how to answer , shoot it for me. I use the Cyclone II , EP2C20F484C7N

1) The data stored in the flash memory , when i turn off the the FPGA board or program again for the FPGA( but not tough the flash memory), will the data in the flash memory lost ?

2) how to retrive the data from the flash memory

3) I only know how to write in the flash memory by using the control panel . But when i want to write in the flash as well as run my program in FPGA, how to do ? ( using DE control panel ,u need to program for FPGA)

If i can find the answer, i will post here also .

Thank a lot

Regards,

Clark

i can manage to answer the 1st question , the data will be in the flash memory even u turn off the board.

The thing here is i dun know how to retrieve the data from the flash memory ( this is one of the on chip memory Cyclone 2 DE 1 )

No one knew how to do it ??

Hello Clark,

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the data will be in the flash memory even u turn off the board

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yes, exactly, that's the nature of flash ROM as a nonvolatile memory in contrast to RAM (without a backup battery).

I've learned in the meantime, that you're using a Terasic DE1 board. I don't have one, but I know from the DE1 documentation, that it comes with a lot of example projects, some also using the flash memory, e. g. a flash music player. I guess, these projects show in detail how to "retrieve" flash data from FPGA side. From the PC side, the Control Panel can load and save data from/to the flash memory in a hexadecimal format.

With these tools, anything should be possible.

Best regards,

Frank

i already solved my problem about the memory(SRAM and Flash) . Basically it it just about assign the pin and some normal VHDL code about reading and writing memory.

Thank Frank for helping me .

Regards,

Hi Clark,

I need your help. How do you assign the pins for the SRAM and Flash in Quartus??

Thanks.