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def492584a
The idea is (not to touch someone else's module/code but ...:) to have similar comments for these aux Lua modules.
37 lines
1.1 KiB
Lua
37 lines
1.1 KiB
Lua
-- This auxiliary 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 auxiliary 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 functions:
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-- On-board buttons:
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-- BTN_UP, BTN_DOWN, BTN_LEFT, BTN_RIGHT, BTN_SELECT
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-- On-board LED:
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-- LED_1
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-- On-board LED:
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-- Auxiliary 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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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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