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The third and fourth parameters in display.rect() and display.fill_rect() are not x,y coordinates, but are instead width,height values. Update the comment after the example to show the correct x,y coordinates of the bottom right corner of each rectangle, respectively.
94 lines
3.3 KiB
ReStructuredText
94 lines
3.3 KiB
ReStructuredText
.. _ssd1306:
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Using a SSD1306 OLED display
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============================
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The SSD1306 OLED display uses either a SPI or I2C interface and comes in a variety of
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sizes (128x64, 128x32, 72x40, 64x48) and colours (white, yellow, blue, yellow + blue).
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Hardware SPI interface::
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from machine import Pin, SPI
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import ssd1306
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hspi = SPI(1) # sck=14 (scl), mosi=13 (sda), miso=12 (unused)
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dc = Pin(4) # data/command
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rst = Pin(5) # reset
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cs = Pin(15) # chip select, some modules do not have a pin for this
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display = ssd1306.SSD1306_SPI(128, 64, hspi, dc, rst, cs)
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Software SPI interface::
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from machine import Pin, SoftSPI
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import ssd1306
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spi = SoftSPI(baudrate=500000, polarity=1, phase=0, sck=Pin(14), mosi=Pin(13), miso=Pin(12))
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dc = Pin(4) # data/command
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rst = Pin(5) # reset
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cs = Pin(15) # chip select, some modules do not have a pin for this
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display = ssd1306.SSD1306_SPI(128, 64, spi, dc, rst, cs)
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I2C interface::
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from machine import Pin, I2C
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import ssd1306
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# using default address 0x3C
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i2c = I2C(sda=Pin(4), scl=Pin(5))
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display = ssd1306.SSD1306_I2C(128, 64, i2c)
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Print Hello World on the first line::
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display.text('Hello, World!', 0, 0, 1)
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display.show()
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Basic functions::
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display.poweroff() # power off the display, pixels persist in memory
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display.poweron() # power on the display, pixels redrawn
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display.contrast(0) # dim
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display.contrast(255) # bright
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display.invert(1) # display inverted
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display.invert(0) # display normal
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display.rotate(True) # rotate 180 degrees
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display.rotate(False) # rotate 0 degrees
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display.show() # write the contents of the FrameBuffer to display memory
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Subclassing FrameBuffer provides support for graphics primitives::
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display.fill(0) # fill entire screen with colour=0
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display.pixel(0, 10) # get pixel at x=0, y=10
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display.pixel(0, 10, 1) # set pixel at x=0, y=10 to colour=1
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display.hline(0, 8, 4, 1) # draw horizontal line x=0, y=8, width=4, colour=1
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display.vline(0, 8, 4, 1) # draw vertical line x=0, y=8, height=4, colour=1
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display.line(0, 0, 127, 63, 1) # draw a line from 0,0 to 127,63
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display.rect(10, 10, 107, 43, 1) # draw a rectangle outline 10,10 to 117,53, colour=1
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display.fill_rect(10, 10, 107, 43, 1) # draw a solid rectangle 10,10 to 117,53, colour=1
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display.text('Hello World', 0, 0, 1) # draw some text at x=0, y=0, colour=1
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display.scroll(20, 0) # scroll 20 pixels to the right
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# draw another FrameBuffer on top of the current one at the given coordinates
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import framebuf
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fbuf = framebuf.FrameBuffer(bytearray(8 * 8 * 1), 8, 8, framebuf.MONO_VLSB)
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fbuf.line(0, 0, 7, 7, 1)
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display.blit(fbuf, 10, 10, 0) # draw on top at x=10, y=10, key=0
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display.show()
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Draw the MicroPython logo and print some text::
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display.fill(0)
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display.fill_rect(0, 0, 32, 32, 1)
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display.fill_rect(2, 2, 28, 28, 0)
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display.vline(9, 8, 22, 1)
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display.vline(16, 2, 22, 1)
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display.vline(23, 8, 22, 1)
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display.fill_rect(26, 24, 2, 4, 1)
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display.text('MicroPython', 40, 0, 1)
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display.text('SSD1306', 40, 12, 1)
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display.text('OLED 128x64', 40, 24, 1)
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display.show()
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