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ssd1327: Add driver
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‎lib/ssd1327/README.md‎

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# MicroPython library for SSD1327 128x128 4-bit greyscale OLED displays
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This library is a port of the [MicroPython library for SSD1327 128x128 4-bit greyscale OLED displays](https://github.com/mcauser/micropython-ssd1327).
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The examples could be easily tested with [mpremote](https://docs.micropython.org/en/latest/reference/mpremote.html) with the following command :
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```sh
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mpremote mount . run examples/hello_world.py
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```

‎lib/ssd1327/examples/bitmap.py‎

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# draw a bitmap
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# draw 16x15 smiley in horizontal mode
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# .....#####...... 00 00 0F FF FF 00 00 00
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# ...##.....##.... 00 0F F0 00 00 FF 00 00
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# ..#.........#... 00 F0 00 00 00 00 F0 00
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# .#...........#.. 0F 00 00 00 00 00 0F 00
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# .#...........#.. 0F 00 00 00 00 00 0F 00
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# ###############. FF FF FF FF FF FF FF F0
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# #.#..####..##.#. F0 F0 0F FF F0 0F F0 F0
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# #.#.###.#.###.#. F0 F0 FF F0 F0 FF F0 F0
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# #..###...###..#. F0 0F FF 00 0F FF 00 F0
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# #.............#. F0 00 00 00 00 00 00 F0
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# .#........#..#.. 0F 00 00 00 00 F0 0F 00
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# .#....####...#.. 0F 00 00 FF FF 00 0F 00
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# ..#.........#... 00 F0 00 00 00 00 F0 00
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# ...##.....##.... 00 0F F0 00 00 FF 00 00
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# .....#####...... 00 00 0F FF FF 00 00 00
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import ssd1327
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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data = bytearray(
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[
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0x00,
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0x00,
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0x0F,
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0xFF,
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0xFF,
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0x00,
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0x00,
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0x00,
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0x00,
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0x0F,
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0xF0,
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0x00,
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0x00,
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0xFF,
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0x00,
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0x00,
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0x00,
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0xF0,
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0x00,
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0x00,
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0x00,
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0x00,
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0xF0,
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0x00,
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0x0F,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x0F,
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0x00,
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0x0F,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x0F,
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0x00,
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0xFF,
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0xFF,
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0xFF,
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0xFF,
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0xFF,
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0xFF,
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0xFF,
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0xF0,
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0xF0,
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0xF0,
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0x0F,
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0xFF,
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0xF0,
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0x0F,
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0xF0,
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0xF0,
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0xF0,
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0xF0,
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0xFF,
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0xF0,
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0xF0,
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0xFF,
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0xF0,
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0xF0,
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0xF0,
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0x0F,
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0xFF,
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0x00,
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0x0F,
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0xFF,
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0x00,
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0xF0,
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0xF0,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0xF0,
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0x0F,
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0x00,
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0x00,
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0x00,
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0x00,
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0xF0,
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0x0F,
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0x00,
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0x0F,
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0x00,
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0x00,
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0xFF,
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0xFF,
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0x00,
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0x0F,
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0x00,
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0x00,
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0xF0,
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0x00,
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0x00,
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0x00,
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0x00,
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0xF0,
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0x00,
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0x00,
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0x0F,
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0xF0,
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0x00,
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0x00,
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0xFF,
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0x00,
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0x00,
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0x00,
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0x00,
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0x0F,
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0xFF,
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0xFF,
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0x00,
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0x00,
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0x00,
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]
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)
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# remap so your data buffer wraps at the desired segment/pixel
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# remapping does not modify the existing ram, instead gives you a window to supply new data
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display.write_cmd(0x15) # SET_COL_ADDR
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display.write_cmd(0x00) # start pos = 0
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display.write_cmd(0x0F) # start pos + half bitmap width (each byte is 2px wide) = 15
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display.write_cmd(0x75) # SET_ROW_ADDR
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display.write_cmd(0x00) # start pos = 0
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display.write_cmd(0x1F) # start + bitmap height = 15
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display.write_data(data)
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def bitmap(data, x, y, w, h):
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display.write_cmd(0x15) # SET_COL_ADDR
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display.write_cmd(0x08 + (x // 2))
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display.write_cmd(0x08 + (x // 2) + (w // 2))
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display.write_cmd(0x75) # SET_ROW_ADDR
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display.write_cmd(0x00 + y)
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display.write_cmd(y + h)
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display.write_data(data)
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# draw many smileys
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for y in range(8):
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for x in range(8):
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bitmap(data, x * 16, y * 16, 15, 15)

‎lib/ssd1327/examples/framebuf_lines.py‎

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import ssd1327
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from time import sleep
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# from top left
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display.fill(0)
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x1 = 0
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y1 = 0
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y2 = display.height - 1
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for x2 in range(0, display.width + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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x2 = display.width - 1
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for y2 in range(0, display.height + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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sleep(1)
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# from top right
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display.fill(0)
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x1 = display.width - 1
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y1 = 0
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y2 = display.height - 1
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for x2 in range(0, display.width + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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x2 = 0
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for y2 in range(0, display.height + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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sleep(1)
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# from bottom left
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display.fill(0)
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x1 = 0
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y1 = display.height - 1
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y2 = 0
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for x2 in range(0, display.width + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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x2 = display.width - 1
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for y2 in range(0, display.height + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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sleep(1)
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# from bottom right
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display.fill(0)
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x1 = display.width - 1
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y1 = display.height - 1
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y2 = 0
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for x2 in range(0, display.width + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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x2 = 0
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for y2 in range(0, display.height + 1, 8):
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display.framebuf.line(x1, y1, x2, y2, 15)
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display.show()
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sleep(1)

‎lib/ssd1327/examples/framebuf_pixels.py‎

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import ssd1327
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from time import sleep
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# corner pixels
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display.fill(0)
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maxw = display.width - 1
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maxh = display.height - 1
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display.pixel(0, 0, 15) # TL
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display.pixel(0, maxh, 15) # TR
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display.pixel(maxw, maxh, 15) # BR
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display.pixel(maxw, 0, 15) # BL
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display.show()
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sleep(1)
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# diagonal line pixel by pixel (the slow way)
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display.fill(0)
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w = display.width
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for i in range(w):
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display.pixel(i, i, 15)
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display.pixel(w - i, i, 15)
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display.show()
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sleep(1)

‎lib/ssd1327/examples/framebuf_rects.py‎

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import ssd1327
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# rects using framebuf
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display.fill(0)
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for i in range(15):
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j = 8 * i
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display.framebuf.fill_rect(j, j, 8, 8, i)
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display.framebuf.rect(120 - (j), j, 8, 8, i)
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display.show()

‎lib/ssd1327/examples/framebuf_scroll.py‎

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import ssd1327
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from time import sleep
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# scroll the framebuf down 16px
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# note: does not wrap around
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display.fill(0)
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for i in range(10):
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display.text("line {}".format(i), 40, i * 8, 15)
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display.show()
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sleep(1)
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for i in range(2):
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display.scroll(0, 16) # framebuf.scroll
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display.show()
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sleep(1)

‎lib/ssd1327/examples/framebuf_text.py‎

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import ssd1327
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# greyscale ascii
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display.fill(0)
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for i in range(32, 128):
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j = i - 32
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x = (j % 16) << 3
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y = (j // 16) << 3
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display.text(chr(i), x, y + 40, 1 + (i % 15))
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display.show()

‎lib/ssd1327/examples/hello_world.py‎

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import ssd1327
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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display.text("Hello World !", 17, 60, 255)
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display.show()

‎lib/ssd1327/examples/illusion.py‎

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import ssd1327
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from machine import SPI, Pin
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# Setup display on SPI bus
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spi = SPI(1)
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dc = Pin("DATA_COMMAND_DISPLAY")
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res = Pin("RST_DISPLAY")
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cs = Pin("CS_DISPLAY")
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display = ssd1327.WS_OLED_128X128_SPI(spi, dc, res, cs)
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# optical illusion - are the lines crooked?
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display.fill(15)
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sq = 12 # square size
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seq = 100 # this magic number gives repititions of sequence 0,1,2,1... repeat
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for y in range(0, display.height, sq + 1):
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offset = round(((seq & 3) / 3) * sq)
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seq >>= 2
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if seq == 0:
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seq = 100
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for x in range(0, display.width, sq * 2):
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display.framebuf.fill_rect(x + offset, y, sq, sq, 0)
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display.framebuf.hline(0, y + sq, display.width, 6)
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display.show()

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