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-rw-r--r--bin/source/hardware_driver.py71
1 files changed, 0 insertions, 71 deletions
diff --git a/bin/source/hardware_driver.py b/bin/source/hardware_driver.py
deleted file mode 100644
index 7d48e69..0000000
--- a/bin/source/hardware_driver.py
+++ /dev/null
@@ -1,71 +0,0 @@
-from smbus import SMBus
-from time import sleep
-
-ALIGN_FUNC = {
- 'left': 'ljust',
- 'right': 'rjust',
- 'center': 'center'}
-CLEAR_DISPLAY = 0x01
-ENABLE_BIT = 0b00000100
-LINES = {
- 1: 0x80,
- 2: 0xC0,
- 3: 0x94,
- 4: 0xD4}
-
-LCD_BACKLIGHT = 0x08
-LCD_NOBACKLIGHT = 0x00
-
-class LCD(object):
-
- def __init__(self, address=0x27, bus=1, width=20, rows=4, backlight=True):
- self.address = address
- self.bus = SMBus(bus)
- self.delay = 0.0005
- self.rows = rows
- self.width = width
- self.backlight_status = backlight
-
- self.write(0x33)
- self.write(0x32)
- self.write(0x06)
- self.write(0x0C)
- self.write(0x28)
- self.write(CLEAR_DISPLAY)
- sleep(self.delay)
-
- def _write_byte(self, byte):
- self.bus.write_byte(self.address, byte)
- self.bus.write_byte(self.address, (byte | ENABLE_BIT))
- sleep(self.delay)
- self.bus.write_byte(self.address,(byte & ~ENABLE_BIT))
- sleep(self.delay)
-
- def write(self, byte, mode=0):
- backlight_mode = LCD_BACKLIGHT if self.backlight_status else LCD_NOBACKLIGHT
- self._write_byte(mode | (byte & 0xF0) | backlight_mode)
- self._write_byte(mode | ((byte << 4) & 0xF0) | backlight_mode)
-
- def text(self, text, line, align='left'):
- self.write(LINES.get(line, LINES[1]))
- text, other_lines = self.get_text_line(text)
- text = getattr(text, ALIGN_FUNC.get(align, 'ljust'))(self.width)
- for char in text:
- self.write(ord(char), mode=1)
- if other_lines and line <= self.rows - 1:
- self.text(other_lines, line + 1, align=align)
-
- def backlight(self, turn_on=True):
- self.backlight_status = turn_on
- self.write(0)
-
- def get_text_line(self, text):
- line_break = self.width
- if len(text) > self.width:
- line_break = text[:self.width + 1].rfind(' ')
- if line_break < 0:
- line_break = self.width
- return text[:line_break], text[line_break:].strip()
-
- def clear(self):
- self.write(CLEAR_DISPLAY)