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This helps apps to treat natively-supported LM3S OLED RIT display as just another onboard device. Doc will be enhanced to give examples on these modules' usages.
39 lines
1.2 KiB
Lua
39 lines
1.2 KiB
Lua
-- This auxiliar platform dependent module defines some hardware devices
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-- available in the specific development kit.
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-- It will be automatically require()d when eLua detects it is running on the
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-- respective platform, exposing auxiliar constants and functions to facilitate
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-- and keep portable the access to the underlying hardware.
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-- The code configures the MCU to interface with the platform devices and
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-- exposes the following objects, constants and fuctions:
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-- Onboard Buttons:
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-- BTN_UP, BTN_DOWN, BTN_LEFT, BTN_RIGHT, BTN_SELECT
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-- Onboard LED:
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-- Auxiliar Function:
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-- btn_pressed( button )
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-- returns true if the arg button is pressed, false otherwise
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local pio = pio
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module(...)
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BTN_UP = pio.PE_0
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BTN_DOWN = pio.PE_1
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BTN_LEFT = pio.PE_2
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BTN_RIGHT = pio.PE_3
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BTN_SELECT = pio.PF_1
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btn_pressed = function( button )
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return pio.pin.getval( button ) == 0
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end
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LED_1 = pio.PF_0
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-- Associate the RIT OLED display device supported by the builtin module lm3s with
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-- a disp name/device offered here
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disp = lm3s.disp
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pio.pin.setdir( pio.INPUT, BTN_UP, BTN_DOWN, BTN_LEFT, BTN_RIGHT, BTN_SELECT )
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pio.pin.setpull( pio.PULLUP, BTN_UP, BTN_DOWN, BTN_LEFT, BTN_RIGHT, BTN_SELECT )
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pio.pin.setdir( pio.OUTPUT, LED_1 )
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