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sipeed / TangNano-9K-example

TangNano-9K-example project
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Examply picotiny project doesn't place/route #13

Open richardklingler opened 2 years ago

richardklingler commented 2 years ago

The picotiny example can be synthesized but place&route fails due to the SPI constraints in picotiny.cst file.

ERROR  (PR2028) : The constrainted location is useless in current package
ERROR  (PR2017) : 'flash_csb' cannot be placed according to constraint, for the location is a dedicated pin (MSPI)
ERROR  (PR2028) : The constrainted location is useless in current package
ERROR  (PR2017) : 'flash_clk' cannot be placed according to constraint, for the location is a dedicated pin (MSPI)
ERROR  (PR2028) : The constrainted location is useless in current package
ERROR  (PR2017) : 'flash_miso' cannot be placed according to constraint, for the location is a dedicated pin (MSPI)
ERROR  (PR2028) : The constrainted location is useless in current package
ERROR  (PR2017) : 'flash_mosi' cannot be placed according to constraint, for the location is a dedicated pin (MSPI)
jaseg commented 2 years ago

You have to do the thing that they described at the top of the README where you change that dual-purpose IO project setting, but for the MSPI pin instead.

wonderfullook commented 1 year ago

Well, solvement is written in readme