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2 Commits

Author SHA1 Message Date
Scott Shawcroft 8d4296f964
Add board.DISPLAY to MagTag. Fix luma computation 
* Initialize the EPaper display on the MagTag at start.
* Tweak the display send to take a const buffer.
* Correct Luma math
  * Multiply the blue component, not add.
  * Add all of the components together before dividing. This
    reduces the impact of truncated division.
 2020-11-13 18:57:52 -08:00
Scott Shawcroft ed6e81d688
Switch SPI to polling DMA and enable displayio 2020-06-24 13:10:08 -07:00