pcd_8544 v0.1.0 Pcd8544
Library for PCD8544 based LED displays (Nokia 5110)
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Functions
Returns a specification to start this module under a supervisor.
Clears the screen
Set character cursor position
Initializes the screen. Receives optional parameters
Writes the string str to the current position on the screen. The chars are wrapped at the end of the
screen.
Link to this section Functions
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child_spec(init_arg)
Returns a specification to start this module under a supervisor.
See Supervisor.
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clear()
Clears the screen
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cursorpos(x, y)
Set character cursor position
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init(opts \\ [])
Initializes the screen. Receives optional parameters:
spi_bus- SPI bus to use (default is 0)spi_dev- SPI device (slave) to use (default is 0)dc_pin- pin on RPi where DC pin of the display is connected to (default is 23)rst_pin- pin on RPi where RST pin of the display is connected to (default is 24)
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start_link(opts \\ [])
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write(str)
Writes the string str to the current position on the screen. The chars are wrapped at the end of the
screen.