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Altera_Forum's avatar
Altera_Forum
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21 years ago

Progrmming the EPCS device

Hi NIOS users / experts, Our application has to update the content of EPCS device (both FPGA and application codes) dynamically. Therefore I am looking for documentation about how we can u...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

First, be careful when upgrading the EPCS dynamically because there is no multi-region available and then you can not have User and Factory like structure. Then, if the transfert fails, your EPCS might be corrupted and your board will be dead. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/ph34r.gif

I will advice you to use a local memory in which you will transfert the contents (external SRAM or SDRAM). Once the transfer into the local memory is completed, do erase and rewrite the entire EPCS. Be sure that no power down will occur. Again, you could get a piece of wood http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif .

Otherwise, HAL provides you with sufficient driver to erase and write into the EPCS. EPCS is just a serial Flash. You should be able to implement your own mecanism upgrading the EPCS.

Maga