spi2: allow optional CS pin in SPIInterface

m-labs / misoc

The original high performance and small footprint system-on-chip based on Migen™

https://m-labs.hk

Other

306 stars 85 forks source link

Open drewrisinger opened 3 years ago

drewrisinger commented 3 years ago

Adds option to not supply CS pins to SPIInterface class. Matches the capability in the iCE & XC7 differential SPI classes.

TODO:

[x] Test. Tested trivially by running python ./misoc/cores/spi2.py, and also by removing "cs_n" item from the in-file test https://github.com/m-labs/misoc/blob/dad351a66fbc8087a37bed0ce4b7bcf153e9795a/misoc/cores/spi2.py#L591