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display: Add initial support for LCD screens attached to an MCU

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Add support for displaying basic status information on ST7920 and
HD44780 based LCDs that are attached directly to a micro-controller.

Signed-off-by: Marcio Teixeira <marcio@alephobjects.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-02-20 20:50:06 -05:00
parent 43ac56766e
commit 08a5f8a5ff
10 changed files with 588 additions and 2 deletions
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5
klippy/extras/virtual_sdcard.py
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@ -35,6 +35,11 @@ class VirtualSD:
except:
logging.exception("virtual_sdcard get_file_list")
raise self.gcode.error("Unable to get file list")
def get_status(self, eventtime):
progress = 0.
if self.work_timer is not None and self.file_size:
progress = float(self.file_position) / self.file_size
return {'progress': progress}
# G-Code commands
def cmd_error(self, params):
raise self.gcode.error("SD write not supported")