""" Copyright (c) 2020, 2021 Russ Hughes This file incorporates work covered by the following copyright and permission notice and is licensed under the same terms: The MIT License (MIT) 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 adds support for: - 320x240, 240x240 and 135x240 pixel displays - Display rotation - 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 """ import time from micropython import const import ustruct as struct import random # 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) # 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] WIDTH_320 = [(320, 240, 0, 0), (240, 320, 0, 0), (320, 240, 0, 0), (240, 320, 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)] # 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 width (int): display width height (int): display height reset (pin): reset pin dc (pin): dc pin cs (pin): cs pin backlight(pin): backlight pin rotation (int): display rotation - 0-Portrait - 1-Landscape - 2-Inverted Portrait - 3-Inverted Landscape """ def __init__(self, spi, width, height, reset, dc,ystart,xstart, cs=None, backlight=None, rotation=0): # 此处做出修改，添加了参数xstart,ystart """ Initialize display. """ if height != 240 or width not in [320, 240, 135]: raise ValueError( "Unsupported display. 320x240, 240x240 and 135x240 are supported." ) self._display_width = self.width = width self._display_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.ystart = ystart self.xstart = xstart 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(500) 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 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._display_width == 320: table = WIDTH_320 elif self._display_width == 240: table = WIDTH_240 elif self._display_width == 135: table = WIDTH_135 else: raise ValueError( "Unsupported display. 320x240, 240x240 and 135x240 are supported." ) 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) # divmod返回商和余数 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 if y0 < y1: ystep = 1 else: ystep = -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): if font.HEIGHT == 16: passes = 2 size = 32 each = 16 else: passes = 4 size = 64 each = 16 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 bit 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[0: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 def color565(self,red, green=0, blue=0): 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 # 修改库函数，实现整个屏幕bmp显示 # 传入一个文件指针 def showMyBmp(self,fid): # 跳过10字节 rm=fid.read(10) rm=0 p1=fid.read(4) p1=struct.unpack('