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micropython-st7789py-lcd-dr.../lib/st7789py.py

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Python
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"""
MIT License
Copyright (c) 2020-2023 Russ Hughes
Copyright (c) 2019 Ivan Belokobylskiy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
The driver is based on devbis' st7789py_mpy module from
https://github.com/devbis/st7789py_mpy.
This driver supports:
- 320x240, 240x240, 135x240 and 128x128 pixel displays
- Display rotation
- RGB and BGR color orders
- Hardware based scrolling
- Drawing text using 8 and 16 bit wide bitmap fonts with heights that are
multiples of 8. Included are 12 bitmap fonts derived from classic pc
BIOS text mode fonts.
- Drawing text using converted TrueType fonts.
- Drawing converted bitmaps
- Named color constants
- BLACK
- BLUE
- RED
- GREEN
- CYAN
- MAGENTA
- YELLOW
- WHITE
"""
import time
from micropython import const
import ustruct as struct
# commands
ST7789_NOP = const(0x00)
ST7789_SWRESET = const(0x01)
ST7789_RDDID = const(0x04)
ST7789_RDDST = const(0x09)
ST7789_SLPIN = const(0x10)
ST7789_SLPOUT = const(0x11)
ST7789_PTLON = const(0x12)
ST7789_NORON = const(0x13)
ST7789_INVOFF = const(0x20)
ST7789_INVON = const(0x21)
ST7789_DISPOFF = const(0x28)
ST7789_DISPON = const(0x29)
ST7789_CASET = const(0x2A)
ST7789_RASET = const(0x2B)
ST7789_RAMWR = const(0x2C)
ST7789_RAMRD = const(0x2E)
ST7789_PTLAR = const(0x30)
ST7789_VSCRDEF = const(0x33)
ST7789_COLMOD = const(0x3A)
ST7789_MADCTL = const(0x36)
ST7789_VSCSAD = const(0x37)
ST7789_MADCTL_MY = const(0x80)
ST7789_MADCTL_MX = const(0x40)
ST7789_MADCTL_MV = const(0x20)
ST7789_MADCTL_ML = const(0x10)
ST7789_MADCTL_BGR = const(0x08)
ST7789_MADCTL_MH = const(0x04)
ST7789_MADCTL_RGB = const(0x00)
ST7789_RDID1 = const(0xDA)
ST7789_RDID2 = const(0xDB)
ST7789_RDID3 = const(0xDC)
ST7789_RDID4 = const(0xDD)
COLOR_MODE_65K = const(0x50)
COLOR_MODE_262K = const(0x60)
COLOR_MODE_12BIT = const(0x03)
COLOR_MODE_16BIT = const(0x05)
COLOR_MODE_18BIT = const(0x06)
COLOR_MODE_16M = const(0x07)
RGB = 0x00
BGR = 0x08
# Color definitions
BLACK = const(0x0000)
BLUE = const(0x001F)
RED = const(0xF800)
GREEN = const(0x07E0)
CYAN = const(0x07FF)
MAGENTA = const(0xF81F)
YELLOW = const(0xFFE0)
WHITE = const(0xFFFF)
_ENCODE_PIXEL = ">H"
_ENCODE_POS = ">HH"
_DECODE_PIXEL = ">BBB"
_BUFFER_SIZE = const(256)
_BIT7 = const(0x80)
_BIT6 = const(0x40)
_BIT5 = const(0x20)
_BIT4 = const(0x10)
_BIT3 = const(0x08)
_BIT2 = const(0x04)
_BIT1 = const(0x02)
_BIT0 = const(0x01)
# Rotation tables (width, height, xstart, ystart)[rotation % 4]
SUPPORTED_RESOLUTIONS = [(320,240),(240,240),(240,135),(128,128)]
WIDTH_320 = [(240, 320, 0, 0),
(320, 240, 0, 0),
(240, 320, 0, 0),
(320, 240, 0, 0)]
WIDTH_240 = [(240, 240, 0, 0),
(240, 240, 0, 0),
(240, 240, 0, 80),
(240, 240, 80, 0)]
WIDTH_135 = [(135, 240, 52, 40),
(240, 135, 40, 53),
(135, 240, 53, 40),
(240, 135, 40, 52)]
WIDTH_128 = [(128, 128, 2, 1),
(128, 128, 1, 2),
(128, 128, 2, 1),
(128, 128, 1, 2)]
# MADCTL ROTATIONS[rotation % 4]
ROTATIONS = [0x00, 0x60, 0xc0, 0xa0]
def color565(red, green=0, blue=0):
"""
Convert red, green and blue values (0-255) into a 16-bit 565 encoding.
"""
try:
red, green, blue = red # see if the first var is a tuple/list
except TypeError:
pass
return (red & 0xf8) << 8 | (green & 0xfc) << 3 | blue >> 3
def _encode_pos(x, y):
"""Encode a postion into bytes."""
return struct.pack(_ENCODE_POS, x, y)
def _encode_pixel(color):
"""Encode a pixel color into bytes."""
return struct.pack(_ENCODE_PIXEL, color)
class ST7789():
"""
ST7789 driver class
Args:
spi (spi): spi object **Required**
width (int): display width **Required**
height (int): display height **Required**
reset (pin): reset pin
dc (pin): dc pin **Required**
cs (pin): cs pin
backlight(pin): backlight pin
rotation (int):
- 0-Portrait
- 1-Landscape
- 2-Inverted Portrait
- 3-Inverted Landscape
color_order (int):
- RGB: Red, Green Blue, default
- BGR: Blue, Green, Red
"""
def __init__(self, spi, width, height, reset=None, dc=None,
cs=None, backlight=None, rotation=0, color_order=RGB):
"""
Initialize display.
"""
if (height,width) not in SUPPORTED_RESOLUTIONS:
print (height,width)
raise ValueError(
"Unsupported display. Supported resolutions are %s"% SUPPORTED_RESOLUTIONS
)
if dc is None:
raise ValueError("dc pin is required.")
self.physical_width = self.width = width
self.physical_height = self.height = height
self.xstart = 0
self.ystart = 0
self.spi = spi
self.reset = reset
self.dc = dc
self.cs = cs
self.backlight = backlight
self._rotation = rotation % 4
self.color_order = color_order
self.hard_reset()
self.soft_reset()
self.sleep_mode(False)
self._set_color_mode(COLOR_MODE_65K | COLOR_MODE_16BIT)
time.sleep_ms(50)
self.rotation(self._rotation)
self.inversion_mode(True)
time.sleep_ms(10)
self._write(ST7789_NORON)
time.sleep_ms(10)
if backlight is not None:
backlight.value(1)
self.fill(0)
self._write(ST7789_DISPON)
time.sleep_ms(150)
def _write(self, command=None, data=None):
"""SPI write to the device: commands and data."""
if self.cs:
self.cs.off()
if command is not None:
self.dc.off()
self.spi.write(bytes([command]))
if data is not None:
self.dc.on()
self.spi.write(data)
if self.cs:
self.cs.on()
def hard_reset(self):
"""
Hard reset display.
"""
if self.cs:
self.cs.off()
if self.reset:
self.reset.on()
time.sleep_ms(50)
if self.reset:
self.reset.off()
time.sleep_ms(50)
if self.reset:
self.reset.on()
time.sleep_ms(150)
if self.cs:
self.cs.on()
def soft_reset(self):
"""
Soft reset display.
"""
self._write(ST7789_SWRESET)
time.sleep_ms(150)
def sleep_mode(self, value):
"""
Enable or disable display sleep mode.
Args:
value (bool): if True enable sleep mode. if False disable sleep
mode
"""
if value:
self._write(ST7789_SLPIN)
else:
self._write(ST7789_SLPOUT)
def inversion_mode(self, value):
"""
Enable or disable display inversion mode.
Args:
value (bool): if True enable inversion mode. if False disable
inversion mode
"""
if value:
self._write(ST7789_INVON)
else:
self._write(ST7789_INVOFF)
def _set_color_mode(self, mode):
"""
Set display color mode.
Args:
mode (int): color mode
COLOR_MODE_65K, COLOR_MODE_262K, COLOR_MODE_12BIT,
COLOR_MODE_16BIT, COLOR_MODE_18BIT, COLOR_MODE_16M
"""
self._write(ST7789_COLMOD, bytes([mode & 0x77]))
def _set_color_order(self, mode):
"""
Set display color order.
Args:
mode (int): color order
RGB: Red, Green Blue
BGR: Blue, Green, Red
"""
self._write(ST7789_COL, bytes([mode & 0x77]))
def rotation(self, rotation):
"""
Set display rotation.
Args:
rotation (int):
- 0-Portrait
- 1-Landscape
- 2-Inverted Portrait
- 3-Inverted Landscape
"""
rotation %= 4
self._rotation = rotation
madctl = ROTATIONS[rotation]
if (self.color_order == BGR):
madctl |= ST7789_MADCTL_BGR
if self.physical_width == 320:
table = WIDTH_320
elif self.physical_width == 240:
table = WIDTH_240
elif self.physical_width == 135:
table = WIDTH_135
elif self.physical_width == 128:
table = WIDTH_128
else:
raise ValueError(
"Unsupported display. Supported resolutions are %s"% SUPPORTED_RESOLUTIONS
)
self.width, self.height, self.xstart, self.ystart = table[rotation]
self._write(ST7789_MADCTL, bytes([madctl]))
def _set_columns(self, start, end):
"""
Send CASET (column address set) command to display.
Args:
start (int): column start address
end (int): column end address
"""
if start <= end <= self.width:
self._write(ST7789_CASET, _encode_pos(
start+self.xstart, end + self.xstart))
def _set_rows(self, start, end):
"""
Send RASET (row address set) command to display.
Args:
start (int): row start address
end (int): row end address
"""
if start <= end <= self.height:
self._write(ST7789_RASET, _encode_pos(
start+self.ystart, end+self.ystart))
def _set_window(self, x0, y0, x1, y1):
"""
Set window to column and row address.
Args:
x0 (int): column start address
y0 (int): row start address
x1 (int): column end address
y1 (int): row end address
"""
self._set_columns(x0, x1)
self._set_rows(y0, y1)
self._write(ST7789_RAMWR)
def vline(self, x, y, length, color):
"""
Draw vertical line at the given location and color.
Args:
x (int): x coordinate
Y (int): y coordinate
length (int): length of line
color (int): 565 encoded color
"""
self.fill_rect(x, y, 1, length, color)
def hline(self, x, y, length, color):
"""
Draw horizontal line at the given location and color.
Args:
x (int): x coordinate
Y (int): y coordinate
length (int): length of line
color (int): 565 encoded color
"""
self.fill_rect(x, y, length, 1, color)
def pixel(self, x, y, color):
"""
Draw a pixel at the given location and color.
Args:
x (int): x coordinate
Y (int): y coordinate
color (int): 565 encoded color
"""
self._set_window(x, y, x, y)
self._write(None, _encode_pixel(color))
def blit_buffer(self, buffer, x, y, width, height):
"""
Copy buffer to display at the given location.
Args:
buffer (bytes): Data to copy to display
x (int): Top left corner x coordinate
Y (int): Top left corner y coordinate
width (int): Width
height (int): Height
"""
self._set_window(x, y, x + width - 1, y + height - 1)
self._write(None, buffer)
def rect(self, x, y, w, h, color):
"""
Draw a rectangle at the given location, size and color.
Args:
x (int): Top left corner x coordinate
y (int): Top left corner y coordinate
width (int): Width in pixels
height (int): Height in pixels
color (int): 565 encoded color
"""
self.hline(x, y, w, color)
self.vline(x, y, h, color)
self.vline(x + w - 1, y, h, color)
self.hline(x, y + h - 1, w, color)
def fill_rect(self, x, y, width, height, color):
"""
Draw a rectangle at the given location, size and filled with color.
Args:
x (int): Top left corner x coordinate
y (int): Top left corner y coordinate
width (int): Width in pixels
height (int): Height in pixels
color (int): 565 encoded color
"""
self._set_window(x, y, x + width - 1, y + height - 1)
chunks, rest = divmod(width * height, _BUFFER_SIZE)
pixel = _encode_pixel(color)
self.dc.on()
if chunks:
data = pixel * _BUFFER_SIZE
for _ in range(chunks):
self._write(None, data)
if rest:
self._write(None, pixel * rest)
def fill(self, color):
"""
Fill the entire FrameBuffer with the specified color.
Args:
color (int): 565 encoded color
"""
self.fill_rect(0, 0, self.width, self.height, color)
def line(self, x0, y0, x1, y1, color):
"""
Draw a single pixel wide line starting at x0, y0 and ending at x1, y1.
Args:
x0 (int): Start point x coordinate
y0 (int): Start point y coordinate
x1 (int): End point x coordinate
y1 (int): End point y coordinate
color (int): 565 encoded color
"""
steep = abs(y1 - y0) > abs(x1 - x0)
if steep:
x0, y0 = y0, x0
x1, y1 = y1, x1
if x0 > x1:
x0, x1 = x1, x0
y0, y1 = y1, y0
dx = x1 - x0
dy = abs(y1 - y0)
err = dx // 2
ystep = 1 if y0 < y1 else -1
while x0 <= x1:
if steep:
self.pixel(y0, x0, color)
else:
self.pixel(x0, y0, color)
err -= dy
if err < 0:
y0 += ystep
err += dx
x0 += 1
def vscrdef(self, tfa, vsa, bfa):
"""
Set Vertical Scrolling Definition.
To scroll a 135x240 display these values should be 40, 240, 40.
There are 40 lines above the display that are not shown followed by
240 lines that are shown followed by 40 more lines that are not shown.
You could write to these areas off display and scroll them into view by
changing the TFA, VSA and BFA values.
Args:
tfa (int): Top Fixed Area
vsa (int): Vertical Scrolling Area
bfa (int): Bottom Fixed Area
"""
struct.pack(">HHH", tfa, vsa, bfa)
self._write(ST7789_VSCRDEF, struct.pack(">HHH", tfa, vsa, bfa))
def vscsad(self, vssa):
"""
Set Vertical Scroll Start Address of RAM.
Defines which line in the Frame Memory will be written as the first
line after the last line of the Top Fixed Area on the display
Example:
for line in range(40, 280, 1):
tft.vscsad(line)
utime.sleep(0.01)
Args:
vssa (int): Vertical Scrolling Start Address
"""
self._write(ST7789_VSCSAD, struct.pack(">H", vssa))
def _text8(self, font, text, x0, y0, color=WHITE, background=BLACK):
"""
Internal method to write characters with width of 8 and
heights of 8 or 16.
Args:
font (module): font module to use
text (str): text to write
x0 (int): column to start drawing at
y0 (int): row to start drawing at
color (int): 565 encoded color to use for characters
background (int): 565 encoded color to use for background
"""
for char in text:
ch = ord(char)
if (font.FIRST <= ch < font.LAST
and x0+font.WIDTH <= self.width
and y0+font.HEIGHT <= self.height):
if font.HEIGHT == 8:
passes = 1
size = 8
each = 0
else:
passes = 2
size = 16
each = 8
for line in range(passes):
idx = (ch-font.FIRST)*size+(each*line)
buffer = struct.pack(
'>64H',
color if font.FONT[idx] & _BIT7 else background,
color if font.FONT[idx] & _BIT6 else background,
color if font.FONT[idx] & _BIT5 else background,
color if font.FONT[idx] & _BIT4 else background,
color if font.FONT[idx] & _BIT3 else background,
color if font.FONT[idx] & _BIT2 else background,
color if font.FONT[idx] & _BIT1 else background,
color if font.FONT[idx] & _BIT0 else background,
color if font.FONT[idx+1] & _BIT7 else background,
color if font.FONT[idx+1] & _BIT6 else background,
color if font.FONT[idx+1] & _BIT5 else background,
color if font.FONT[idx+1] & _BIT4 else background,
color if font.FONT[idx+1] & _BIT3 else background,
color if font.FONT[idx+1] & _BIT2 else background,
color if font.FONT[idx+1] & _BIT1 else background,
color if font.FONT[idx+1] & _BIT0 else background,
color if font.FONT[idx+2] & _BIT7 else background,
color if font.FONT[idx+2] & _BIT6 else background,
color if font.FONT[idx+2] & _BIT5 else background,
color if font.FONT[idx+2] & _BIT4 else background,
color if font.FONT[idx+2] & _BIT3 else background,
color if font.FONT[idx+2] & _BIT2 else background,
color if font.FONT[idx+2] & _BIT1 else background,
color if font.FONT[idx+2] & _BIT0 else background,
color if font.FONT[idx+3] & _BIT7 else background,
color if font.FONT[idx+3] & _BIT6 else background,
color if font.FONT[idx+3] & _BIT5 else background,
color if font.FONT[idx+3] & _BIT4 else background,
color if font.FONT[idx+3] & _BIT3 else background,
color if font.FONT[idx+3] & _BIT2 else background,
color if font.FONT[idx+3] & _BIT1 else background,
color if font.FONT[idx+3] & _BIT0 else background,
color if font.FONT[idx+4] & _BIT7 else background,
color if font.FONT[idx+4] & _BIT6 else background,
color if font.FONT[idx+4] & _BIT5 else background,
color if font.FONT[idx+4] & _BIT4 else background,
color if font.FONT[idx+4] & _BIT3 else background,
color if font.FONT[idx+4] & _BIT2 else background,
color if font.FONT[idx+4] & _BIT1 else background,
color if font.FONT[idx+4] & _BIT0 else background,
color if font.FONT[idx+5] & _BIT7 else background,
color if font.FONT[idx+5] & _BIT6 else background,
color if font.FONT[idx+5] & _BIT5 else background,
color if font.FONT[idx+5] & _BIT4 else background,
color if font.FONT[idx+5] & _BIT3 else background,
color if font.FONT[idx+5] & _BIT2 else background,
color if font.FONT[idx+5] & _BIT1 else background,
color if font.FONT[idx+5] & _BIT0 else background,
color if font.FONT[idx+6] & _BIT7 else background,
color if font.FONT[idx+6] & _BIT6 else background,
color if font.FONT[idx+6] & _BIT5 else background,
color if font.FONT[idx+6] & _BIT4 else background,
color if font.FONT[idx+6] & _BIT3 else background,
color if font.FONT[idx+6] & _BIT2 else background,
color if font.FONT[idx+6] & _BIT1 else background,
color if font.FONT[idx+6] & _BIT0 else background,
color if font.FONT[idx+7] & _BIT7 else background,
color if font.FONT[idx+7] & _BIT6 else background,
color if font.FONT[idx+7] & _BIT5 else background,
color if font.FONT[idx+7] & _BIT4 else background,
color if font.FONT[idx+7] & _BIT3 else background,
color if font.FONT[idx+7] & _BIT2 else background,
color if font.FONT[idx+7] & _BIT1 else background,
color if font.FONT[idx+7] & _BIT0 else background
)
self.blit_buffer(buffer, x0, y0+8*line, 8, 8)
x0 += 8
def _text16(self, font, text, x0, y0, color=WHITE, background=BLACK):
"""
Internal method to draw characters with width of 16 and heights of 16
or 32.
Args:
font (module): font module to use
text (str): text to write
x0 (int): column to start drawing at
y0 (int): row to start drawing at
color (int): 565 encoded color to use for characters
background (int): 565 encoded color to use for background
"""
for char in text:
ch = ord(char)
if (font.FIRST <= ch < font.LAST
and x0+font.WIDTH <= self.width
and y0+font.HEIGHT <= self.height):
each = 16
if font.HEIGHT == 16:
passes = 2
size = 32
else:
passes = 4
size = 64
for line in range(passes):
idx = (ch-font.FIRST)*size+(each*line)
buffer = struct.pack(
'>128H',
color if font.FONT[idx] & _BIT7 else background,
color if font.FONT[idx] & _BIT6 else background,
color if font.FONT[idx] & _BIT5 else background,
color if font.FONT[idx] & _BIT4 else background,
color if font.FONT[idx] & _BIT3 else background,
color if font.FONT[idx] & _BIT2 else background,
color if font.FONT[idx] & _BIT1 else background,
color if font.FONT[idx] & _BIT0 else background,
color if font.FONT[idx+1] & _BIT7 else background,
color if font.FONT[idx+1] & _BIT6 else background,
color if font.FONT[idx+1] & _BIT5 else background,
color if font.FONT[idx+1] & _BIT4 else background,
color if font.FONT[idx+1] & _BIT3 else background,
color if font.FONT[idx+1] & _BIT2 else background,
color if font.FONT[idx+1] & _BIT1 else background,
color if font.FONT[idx+1] & _BIT0 else background,
color if font.FONT[idx+2] & _BIT7 else background,
color if font.FONT[idx+2] & _BIT6 else background,
color if font.FONT[idx+2] & _BIT5 else background,
color if font.FONT[idx+2] & _BIT4 else background,
color if font.FONT[idx+2] & _BIT3 else background,
color if font.FONT[idx+2] & _BIT2 else background,
color if font.FONT[idx+2] & _BIT1 else background,
color if font.FONT[idx+2] & _BIT0 else background,
color if font.FONT[idx+3] & _BIT7 else background,
color if font.FONT[idx+3] & _BIT6 else background,
color if font.FONT[idx+3] & _BIT5 else background,
color if font.FONT[idx+3] & _BIT4 else background,
color if font.FONT[idx+3] & _BIT3 else background,
color if font.FONT[idx+3] & _BIT2 else background,
color if font.FONT[idx+3] & _BIT1 else background,
color if font.FONT[idx+3] & _BIT0 else background,
color if font.FONT[idx+4] & _BIT7 else background,
color if font.FONT[idx+4] & _BIT6 else background,
color if font.FONT[idx+4] & _BIT5 else background,
color if font.FONT[idx+4] & _BIT4 else background,
color if font.FONT[idx+4] & _BIT3 else background,
color if font.FONT[idx+4] & _BIT2 else background,
color if font.FONT[idx+4] & _BIT1 else background,
color if font.FONT[idx+4] & _BIT0 else background,
color if font.FONT[idx+5] & _BIT7 else background,
color if font.FONT[idx+5] & _BIT6 else background,
color if font.FONT[idx+5] & _BIT5 else background,
color if font.FONT[idx+5] & _BIT4 else background,
color if font.FONT[idx+5] & _BIT3 else background,
color if font.FONT[idx+5] & _BIT2 else background,
color if font.FONT[idx+5] & _BIT1 else background,
color if font.FONT[idx+5] & _BIT0 else background,
color if font.FONT[idx+6] & _BIT7 else background,
color if font.FONT[idx+6] & _BIT6 else background,
color if font.FONT[idx+6] & _BIT5 else background,
color if font.FONT[idx+6] & _BIT4 else background,
color if font.FONT[idx+6] & _BIT3 else background,
color if font.FONT[idx+6] & _BIT2 else background,
color if font.FONT[idx+6] & _BIT1 else background,
color if font.FONT[idx+6] & _BIT0 else background,
color if font.FONT[idx+7] & _BIT7 else background,
color if font.FONT[idx+7] & _BIT6 else background,
color if font.FONT[idx+7] & _BIT5 else background,
color if font.FONT[idx+7] & _BIT4 else background,
color if font.FONT[idx+7] & _BIT3 else background,
color if font.FONT[idx+7] & _BIT2 else background,
color if font.FONT[idx+7] & _BIT1 else background,
color if font.FONT[idx+7] & _BIT0 else background,
color if font.FONT[idx+8] & _BIT7 else background,
color if font.FONT[idx+8] & _BIT6 else background,
color if font.FONT[idx+8] & _BIT5 else background,
color if font.FONT[idx+8] & _BIT4 else background,
color if font.FONT[idx+8] & _BIT3 else background,
color if font.FONT[idx+8] & _BIT2 else background,
color if font.FONT[idx+8] & _BIT1 else background,
color if font.FONT[idx+8] & _BIT0 else background,
color if font.FONT[idx+9] & _BIT7 else background,
color if font.FONT[idx+9] & _BIT6 else background,
color if font.FONT[idx+9] & _BIT5 else background,
color if font.FONT[idx+9] & _BIT4 else background,
color if font.FONT[idx+9] & _BIT3 else background,
color if font.FONT[idx+9] & _BIT2 else background,
color if font.FONT[idx+9] & _BIT1 else background,
color if font.FONT[idx+9] & _BIT0 else background,
color if font.FONT[idx+10] & _BIT7 else background,
color if font.FONT[idx+10] & _BIT6 else background,
color if font.FONT[idx+10] & _BIT5 else background,
color if font.FONT[idx+10] & _BIT4 else background,
color if font.FONT[idx+10] & _BIT3 else background,
color if font.FONT[idx+10] & _BIT2 else background,
color if font.FONT[idx+10] & _BIT1 else background,
color if font.FONT[idx+10] & _BIT0 else background,
color if font.FONT[idx+11] & _BIT7 else background,
color if font.FONT[idx+11] & _BIT6 else background,
color if font.FONT[idx+11] & _BIT5 else background,
color if font.FONT[idx+11] & _BIT4 else background,
color if font.FONT[idx+11] & _BIT3 else background,
color if font.FONT[idx+11] & _BIT2 else background,
color if font.FONT[idx+11] & _BIT1 else background,
color if font.FONT[idx+11] & _BIT0 else background,
color if font.FONT[idx+12] & _BIT7 else background,
color if font.FONT[idx+12] & _BIT6 else background,
color if font.FONT[idx+12] & _BIT5 else background,
color if font.FONT[idx+12] & _BIT4 else background,
color if font.FONT[idx+12] & _BIT3 else background,
color if font.FONT[idx+12] & _BIT2 else background,
color if font.FONT[idx+12] & _BIT1 else background,
color if font.FONT[idx+12] & _BIT0 else background,
color if font.FONT[idx+13] & _BIT7 else background,
color if font.FONT[idx+13] & _BIT6 else background,
color if font.FONT[idx+13] & _BIT5 else background,
color if font.FONT[idx+13] & _BIT4 else background,
color if font.FONT[idx+13] & _BIT3 else background,
color if font.FONT[idx+13] & _BIT2 else background,
color if font.FONT[idx+13] & _BIT1 else background,
color if font.FONT[idx+13] & _BIT0 else background,
color if font.FONT[idx+14] & _BIT7 else background,
color if font.FONT[idx+14] & _BIT6 else background,
color if font.FONT[idx+14] & _BIT5 else background,
color if font.FONT[idx+14] & _BIT4 else background,
color if font.FONT[idx+14] & _BIT3 else background,
color if font.FONT[idx+14] & _BIT2 else background,
color if font.FONT[idx+14] & _BIT1 else background,
color if font.FONT[idx+14] & _BIT0 else background,
color if font.FONT[idx+15] & _BIT7 else background,
color if font.FONT[idx+15] & _BIT6 else background,
color if font.FONT[idx+15] & _BIT5 else background,
color if font.FONT[idx+15] & _BIT4 else background,
color if font.FONT[idx+15] & _BIT3 else background,
color if font.FONT[idx+15] & _BIT2 else background,
color if font.FONT[idx+15] & _BIT1 else background,
color if font.FONT[idx+15] & _BIT0 else background
)
self.blit_buffer(buffer, x0, y0+8*line, 16, 8)
x0 += font.WIDTH
def text(self, font, text, x0, y0, color=WHITE, background=BLACK):
"""
Draw text on display in specified font and colors. 8 and 16 bit wide
fonts are supported.
Args:
font (module): font module to use.
text (str): text to write
x0 (int): column to start drawing at
y0 (int): row to start drawing at
color (int): 565 encoded color to use for characters
background (int): 565 encoded color to use for background
"""
if font.WIDTH == 8:
self._text8(font, text, x0, y0, color, background)
else:
self._text16(font, text, x0, y0, color, background)
def bitmap(self, bitmap, x, y, index=0):
"""
Draw a bitmap on display at the specified column and row
Args:
bitmap (bitmap_module): The module containing the bitmap to draw
x (int): column to start drawing at
y (int): row to start drawing at
index (int): Optional index of bitmap to draw from multiple bitmap
module
"""
bitmap_size = bitmap.HEIGHT * bitmap.WIDTH
buffer_len = bitmap_size * 2
buffer = bytearray(buffer_len)
bs_bit = bitmap.BPP * bitmap_size * index if index > 0 else 0
for i in range(0, buffer_len, 2):
color_index = 0
for _ in range(bitmap.BPP):
color_index <<= 1
color_index |= (bitmap.BITMAP[bs_bit // 8]
& 1 << (7 - (bs_bit % 8))) > 0
bs_bit += 1
color = bitmap.PALETTE[color_index]
buffer[i] = color & 0xff00 >> 8
buffer[i + 1] = color_index & 0xff
to_col = x + bitmap.WIDTH - 1
to_row = y + bitmap.HEIGHT - 1
if self.width > to_col and self.height > to_row:
self._set_window(x, y, to_col, to_row)
self._write(None, buffer)
# @micropython.native
def write(self, font, string, x, y, fg=WHITE, bg=BLACK):
"""
Write a string using a converted true-type font on the display starting
at the specified column and row
Args:
font (font): The module containing the converted true-type font
s (string): The string to write
x (int): column to start writing
y (int): row to start writing
fg (int): foreground color, optional, defaults to WHITE
bg (int): background color, optional, defaults to BLACK
"""
buffer_len = font.HEIGHT * font.MAX_WIDTH * 2
buffer = bytearray(buffer_len)
fg_hi = (fg & 0xff00) >> 8
fg_lo = fg & 0xff
bg_hi = (bg & 0xff00) >> 8
bg_lo = bg & 0xff
for character in string:
try:
char_index = font.MAP.index(character)
offset = char_index * font.OFFSET_WIDTH
bs_bit = font.OFFSETS[offset]
if font.OFFSET_WIDTH > 1:
bs_bit = (bs_bit << 8) + font.OFFSETS[offset + 1]
if font.OFFSET_WIDTH > 2:
bs_bit = (bs_bit << 8) + font.OFFSETS[offset + 2]
char_width = font.WIDTHS[char_index]
buffer_needed = char_width * font.HEIGHT * 2
for i in range(0, buffer_needed, 2):
if font.BITMAPS[bs_bit // 8] & 1 << (7 - (bs_bit % 8)) > 0:
buffer[i] = fg_hi
buffer[i + 1] = fg_lo
else:
buffer[i] = bg_hi
buffer[i + 1] = bg_lo
bs_bit += 1
to_col = x + char_width - 1
to_row = y + font.HEIGHT - 1
if self.width > to_col and self.height > to_row:
self._set_window(x, y, to_col, to_row)
self._write(None, buffer[:buffer_needed])
x += char_width
except ValueError:
pass
def write_width(self, font, string):
"""
Returns the width in pixels of the string if it was written with the
specified font
Args:
font (font): The module containing the converted true-type font
string (string): The string to measure
"""
width = 0
for character in string:
try:
char_index = font.MAP.index(character)
width += font.WIDTHS[char_index]
except ValueError:
pass
return width
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