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display: Add ST7567 display support (#1540)

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Signed-off-by: Dmitry Budaev <condemil@gmail.com>
This commit is contained in:
Dmitry 2019-04-16 03:07:29 +02:00 • committed by KevinOConnor
parent c440c6b7aa
commit 1b92af6078
3 changed files with 44 additions and 4 deletions
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34
klippy/extras/display/uc1701.py
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@ -2,6 +2,7 @@
#
# Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
# Copyright (C) 2018 Eric Callahan <arksine.code@gmail.com>
# Copyright (C) 2019 Dmitry Budaev <condemil@gmail.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import logging
@ -178,6 +179,39 @@ class UC1701(DisplayBase):
self.flush()
logging.info("uc1701 initialized")
# The ST7567 is a "4-wire" SPI display device
class ST7567(DisplayBase):
def __init__(self, config):
DisplayBase.__init__(self, SPI4wire(config, "a0_pin"))
self.contrast = config.getint('contrast', 60, minval=0, maxval=63)
ppins = config.get_printer().lookup_object('pins')
rs_pin = config.get('rs_pin')
self.reset_pin = ppins.setup_pin('digital_out', rs_pin)
self.reset_pin.setup_start_value(start_value=1., shutdown_value=0.,
is_static=False)
def init(self):
# Send init commands
init_cmds = [0xE2, # System reset
0x40, # Set display to start at line 0
0xA0, # Set SEG direction
0xC8, # Set COM Direction
0xA2, # Set Bias = 1/9
0x2F, # Boost, regulator, follower on
0xF8, # Set booster ratio
0x00, # Booster ratio value (4x)
0x23, # Set regulation ratio (3)
0x81, # Set Electronic Volume
self.contrast, # Electronic Volume value
# 0xAC, # Set static indicator off
# 0x00, # NOP
0xA6, # Disable Inverse
0xAF] # Set display enable
self.send(init_cmds)
self.send([0xA5]) # display all
self.send([0xA4]) # normal display
self.flush()
logging.info("st7567 initialized")
# The SSD1306 supports both i2c and "4-wire" spi
class SSD1306(DisplayBase):
def __init__(self, config):