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Added a light-weight status screen for the ST7920

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- The status screen uses the ST7920 character generator to greatly
  reduce SPI traffic and MCU load when updating the status screen.

- Has been tested with the RepRapDiscount Full Graphics Smart Controller
  but should work with any LCD that uses an ST7920 or fully compatible
  controller.
This commit is contained in:
Marcio Teixeira
2018-02-14 14:43:54 -07:00
parent d741bcf8a9
commit 4880ac6533
24 changed files with 287 additions and 17 deletions
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11
Marlin/src/config/examples/FolgerTech/i3-2020/Configuration.h
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@@ -1516,7 +1516,18 @@
// RepRapDiscount FULL GRAPHIC Smart Controller
// http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller
//
// If USE_ST7920_LIGHTWEIGHT_UI is uncommented, then an alternative
// light-weight status screen will be used that takes advantage of
// the ST7920 character-generator to conserve MCU resources.
//
// Since the lightweight status screen can only show a status
// message or the position, but not both, set DELAY_TO_SHOW_POSITION
// to the number of seconds until the position is revealed after a new
// status message is drawn.
//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
//#define USE_ST7920_LIGHTWEIGHT_UI
//#define DELAY_TO_SHOW_POSITION 20
//
// MakerLab Mini Panel with graphic