kunsi/Octoprint-LCD-HD44780
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Implement LCD communication myself, add information on screen

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This commit is contained in:
Felix Kunsmann 2017-03-14 21:31:21 +00:00
parent a1394af3aa
commit e48bcf15ec
3 changed files with 127 additions and 76 deletions
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175
octoprint_hd44780/__init__.py
View file

@ -1,7 +1,6 @@
# coding=utf-8
import future
from builtins import chr
from __future__ import absolute_import
__author__ = "Felix Kunsmann <felix@kunsmann.eu>"
__license__ = "GNU Affero General Public License http://www.gnu.org/licenses/agpl.html"
@ -9,16 +8,12 @@ __copyright__ = "Copyright (C) 2017 Felix Kunsmann - Released under terms of the
import octoprint.plugin
from hd44780_callback import *
import RPi.GPIO as GPIO
from RPLCD import CharLCD
from RPLCD import CursorMode
from RPLCD import cursor
import time
class LCD_HD44780(octoprint.plugin.StartupPlugin,
octoprint.plugin.SettingsPlugin):
octoprint.plugin.SettingsPlugin,
octoprint.printer.PrinterCallback):
def __init__(self):
self._pin_to_gpio_rev1 = [-1, -1, -1, 0, -1, 1, -1, 4, 14, -1, 15, 17, 18, 21, -1, 22, 23, -1, 24, 10, -1, 9, 25, 11, 8, -1, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ]
self._pin_to_gpio_rev2 = [-1, -1, -1, 2, -1, 3, -1, 4, 14, -1, 15, 17, 18, 27, -1, 22, 23, -1, 24, 10, -1, 9, 25, 11, 8, -1, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ]
@ -26,7 +21,6 @@ class LCD_HD44780(octoprint.plugin.StartupPlugin,
self._configuredGPIOPins = []
self.pin_rs = 15
self.pin_rw = None
self.pin_e = 16
self.pin_d4 = 21
self.pin_d5 = 22
@ -36,33 +30,23 @@ class LCD_HD44780(octoprint.plugin.StartupPlugin,
self.cols = 20
self.rows = 4
self._lcd = None
self._line1 = ''
self._line2 = ''
self._line3 = ''
self._line4 = ''
self._custom_heatbed = (
0b00000,
0b11111,
0b10101,
0b10101,
0b10001,
0b10101,
0b10101,
0b11111,
)
self._lcd_line1 = 0x80
self._lcd_line2 = 0xC0
self._lcd_chr = GPIO.HIGH
self._lcd_cmd = GPIO.LOW
self._lcd_pulse = 0.0005
self._lcd_delay = 0.0005
self._custom_tool0 = (
0b00000,
0b11111,
0b10001,
0b10111,
0b10011,
0b10111,
0b10001,
0b11111,
)
self._lcd_updating = False
def on_settings_initialized(self):
self._initialize_lcd()
self._printer.register_callback(LCD_HD44780_PrinterCallback)
self._printer.register_callback(self)
def _gpio_board_to_bcm(self, pin):
if GPIO.RPI_REVISION == 1:
@ -100,28 +84,123 @@ class LCD_HD44780(octoprint.plugin.StartupPlugin,
if GPIO.getmode() is None:
GPIO.setmode(GPIO.BOARD)
pin_rs = self._gpio_get_pin(self.pin_rs)
GPIO.setup(self._gpio_get_pin(self.pin_rs), GPIO.OUT)
GPIO.setup(self._gpio_get_pin(self.pin_e), GPIO.OUT)
GPIO.setup(self._gpio_get_pin(self.pin_d4), GPIO.OUT)
GPIO.setup(self._gpio_get_pin(self.pin_d5), GPIO.OUT)
GPIO.setup(self._gpio_get_pin(self.pin_d6), GPIO.OUT)
GPIO.setup(self._gpio_get_pin(self.pin_d7), GPIO.OUT)
if self.pin_rw is not None:
pin_rw = self._gpio_get_pin(self.pin_rw)
self._lcd_send_byte(0x33, self._lcd_cmd)
self._lcd_send_byte(0x32, self._lcd_cmd)
self._lcd_send_byte(0x28, self._lcd_cmd)
self._lcd_send_byte(0x0C, self._lcd_cmd)
self._lcd_send_byte(0x06, self._lcd_cmd)
self._lcd_send_byte(0x01, self._lcd_cmd)
self._line1 = 'powered by'
self._line2 = 'Octoprint'
self._lcd_update()
def _lcd_update(self):
if self._lcd_updating:
return
self._lcd_updating = True
line1 = self._line1.ljust(self.cols, ' ')
line2 = self._line2.ljust(self.cols, ' ')
line3 = self._line3.ljust(self.cols, ' ')
line4 = self._line4.ljust(self.cols, ' ')
message = line1 + line3
self._lcd_send_byte(self._lcd_line1, self._lcd_cmd)
for i in range(self.cols*self.rows/2):
self._lcd_send_byte(ord(message[i]), self._lcd_chr)
message = line2 + line4
self._lcd_send_byte(self._lcd_line2, self._lcd_cmd)
for i in range(self.cols*self.rows/2):
self._lcd_send_byte(ord(message[i]), self._lcd_chr)
self._lcd_updating = False
def _lcd_send_byte(self, bits, mode):
GPIO.output(self.pin_rs, mode)
GPIO.output(self.pin_d4, GPIO.LOW)
GPIO.output(self.pin_d5, GPIO.LOW)
GPIO.output(self.pin_d6, GPIO.LOW)
GPIO.output(self.pin_d7, GPIO.LOW)
if bits & 0x10 == 0x10:
GPIO.output(self.pin_d4, GPIO.HIGH)
if bits & 0x20 == 0x20:
GPIO.output(self.pin_d5, GPIO.HIGH)
if bits & 0x40 == 0x40:
GPIO.output(self.pin_d6, GPIO.HIGH)
if bits & 0x80 == 0x80:
GPIO.output(self.pin_d7, GPIO.HIGH)
time.sleep(self._lcd_delay)
GPIO.output(self.pin_e, GPIO.HIGH)
time.sleep(self._lcd_pulse)
GPIO.output(self.pin_e, GPIO.LOW)
time.sleep(self._lcd_delay)
GPIO.output(self.pin_d4, GPIO.LOW)
GPIO.output(self.pin_d5, GPIO.LOW)
GPIO.output(self.pin_d6, GPIO.LOW)
GPIO.output(self.pin_d7, GPIO.LOW)
if bits&0x01==0x01:
GPIO.output(self.pin_d4, GPIO.HIGH)
if bits&0x02==0x02:
GPIO.output(self.pin_d5, GPIO.HIGH)
if bits&0x04==0x04:
GPIO.output(self.pin_d6, GPIO.HIGH)
if bits&0x08==0x08:
GPIO.output(self.pin_d7, GPIO.HIGH)
time.sleep(self._lcd_delay)
GPIO.output(self.pin_e, GPIO.HIGH)
time.sleep(self._lcd_pulse)
GPIO.output(self.pin_e, GPIO.LOW)
time.sleep(self._lcd_delay)
def on_printer_add_log(self, data):
pass
def on_printer_add_message(self, data):
pass
def on_printer_add_temperature(self, data):
try:
self._line4 = 'E{:3.0f}/{:3.0f} B{:3.0f}/{:3.0f}'.format(data['tool0']['actual'], data['tool0']['target'], data['bed']['actual'], data['bed']['target'])
self._lcd_update()
except KeyError:
pass
def on_printer_received_registered_message(self, name, output):
pass
def on_printer_send_current_data(self, data):
self._line1 = data['state']['text'][:20].center(20)
if data['job']['file']['name'] is not None:
self._line2 = data['job']['file']['name'][:20]
else:
pin_rw = None
self._line2 = ''
pin_e = self._gpio_get_pin(self.pin_e)
pin_d4 = self._gpio_get_pin(self.pin_d4)
pin_d5 = self._gpio_get_pin(self.pin_d5)
pin_d6 = self._gpio_get_pin(self.pin_d6)
pin_d7 = self._gpio_get_pin(self.pin_d7)
if data['progress']['completion'] is not None:
self._line3 = '{:6.2f}'.format(data['progress']['completion']) + '%'
self._lcd = CharLCD(pin_rs=pin_rs, pin_rw=pin_rw, pin_e=pin_e, pins_data=[pin_d4, pin_d5, pin_d6, pin_d7],
numbering_mode=GPIO.getmode(), cols=self.cols, rows=self.rows)
if data['progress']['printTimeLeft'] is not None:
self._line3 += ' ~' + '{:1.0f}:{:02.0f}'.format(data['progress']['printTimeLeft']/60, data['progress']['printTimeLeft']%60) + 'min '
else:
self._line3 = ''
self._lcd.create_char(0, self._custom_heatbed)
self._lcd.create_char(1, self._custom_tool0)
self._lcd_update()
self._lcd.cursor_mode = CursorMode.hide
self._lcd.clear()
self._lcd.write_string('Octoprint')
def on_printer_send_initial_data(self, data):
self._line1 = ''
self._line2 = ''
self._lcd_update()
__plugin_name__ = "LCD: HD44780-compatible"

27
octoprint_hd44780/hd44780_callback.py
View file

@ -1,27 +0,0 @@
# coding=utf-8
import future
from builtins import chr
import octoprint.plugin
class LCD_HD44780_PrinterCallback(octoprint.printer.PrinterCallback):
def on_printer_add_log(data):
pass
def on_printer_add_message(data):
pass
def on_printer_add_temperature(data):
LCD_HD44780._lcd.cursor_pos = (3,0)
LCD_HD44780._lcd.write_string(chr(1) + '{:5.1f}/{:3f}'.format(data['tool0']['actual'], data['tool0']['target']) + ' ' + chr(0) + '{:5.1f}/{:3f}'.format(data['tool0']['actual'], data['tool0']['target']))
def on_printer_received_registered_message(name, output):
pass
def on_printer_send_current_data(data):
self._lcd.cursor_pos = (0,0)
self._lcd.write_string(data['state']['text'].center(20))
def on_printer_send_initial_data(data):
self._lcd.clear()

1
requirements.txt
View file

@ -1,3 +1,2 @@
OctoPrint
RPi.GPIO>=0.6.3
RPLCD