EPCS programing on custom board

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EPCS programing on custom board

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I'm trying to program the EPCS found on my custom board , but witout success.

(i know how to use the flash progarmmer with te evalution kit )

i have folowed the doc :ug_nios2_flash_programmer.pdf

about how to use the flash progarmmer and how to create your hown target board. i have managed to pass all the steps in this doc.

1. created my target board using mk_target_board

2. genrated it and compile it

3. used the result in my orignal design

4. compiled my orignal design

all the abopve steps have pass with no error

but when i have tried to use Nios IDE , to programme the epcs

I got a message error:

Unable to synchronize with target.

this happen while trying to execute the next script:# Programming flash with the FPGA configuration

$SOPC_KIT_NIOS2/bin/nios2-flash-programmer --input=ALTERA.flash --sof=c:/afp/NiosBoard/system/NiosBoard.sof --epcs

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