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uc1701: make contrast configurable 

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine 2019-04-02 12:49:08 -04:00 committed by KevinOConnor
parent 9bd3e80421
commit 2e16be224e
2 changed files with 5 additions and 1 deletions
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3
config/example-extras.cfg
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@ -1217,6 +1217,9 @@
#a0_pin: #a0_pin:
# The pins connected to an uc1701 type lcd. These parameters must be # The pins connected to an uc1701 type lcd. These parameters must be
# provided when using an uc1701 display. # provided when using an uc1701 display.
#contrast: 40
# The contrast to set when using a uc1701 type display. The value may
# range from 0 to 63. Default is 40.
#cs_pin: #cs_pin:
#dc_pin: #dc_pin:
#spi_bus: #spi_bus:

3
klippy/extras/display/uc1701.py
View File

@ -153,6 +153,7 @@ class I2C:
class UC1701(DisplayBase): class UC1701(DisplayBase):
def __init__(self, config): def __init__(self, config):
DisplayBase.__init__(self, SPI4wire(config, "a0_pin")) DisplayBase.__init__(self, SPI4wire(config, "a0_pin"))
self.contrast = config.getint('contrast', 40, minval=0, maxval=63)
def init(self): def init(self):
init_cmds = [0xE2, # System reset init_cmds = [0xE2, # System reset
0x40, # Set display to start at line 0 0x40, # Set display to start at line 0
@ -166,7 +167,7 @@ class UC1701(DisplayBase):
0x00, # Booster ratio value (4x) 0x00, # Booster ratio value (4x)
0x23, # Set resistor ratio (3) 0x23, # Set resistor ratio (3)
0x81, # Set Electronic Volume 0x81, # Set Electronic Volume
0x28, # Electronic volume value (40) self.contrast, # Electronic Volume value
0xAC, # Set static indicator off 0xAC, # Set static indicator off
0x00, # NOP 0x00, # NOP
0xA6, # Disable Inverse 0xA6, # Disable Inverse