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71 lines
1.7 KiB
Lua
71 lines
1.7 KiB
Lua
-- TVBGone in eLua
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-- Adapted from LadyAda's TVBGone project
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-- Check codes file
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local codes = io.open( "/rom/codes.bin", "rb" )
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if codes == nil then
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print "Unable to open TVBGone codes file"
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return
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end
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local pwmid, tmrid
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if pd.board() == 'EK-LM3S8962' or pd.board() == 'EK-LM3S6965' then
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pwmid, tmrid = 2, 1
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pwm.setclock( pwmid, 25000000 )
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led, startpin, exitpin = pio.PF_0, pio.PF_1, pio.PE_1
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else
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print( pd.board() .. " not supported with this example" )
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return
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end
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-- Setup PIO
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pio.pin.setdir( pio.OUTPUT, led )
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pio.pin.setdir( pio.INPUT, startpin, exitpin )
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pio.pin.setpull( pio.PULLUP, startpin, exitpin )
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-- Local variables
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local _, fstr, freq, timesstr, ontime, offtime, runme
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-- Send all the codes in an infinite loop
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collectgarbage( "stop" )
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runme = true
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while runme do
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while pio.pin.getval( startpin ) == 1 do
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if pio.pin.getval( exitpin ) == 0 then
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runme = false
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break
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end
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end
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if not runme then break end
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pio.pin.sethigh( led )
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codes:seek( "set", 0 )
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while true do
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fstr = codes:read( 4 )
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if fstr == nil then break end
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_, freq = pack.unpack( fstr, "<L" )
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pwm.setup( pwmid, freq, 50 )
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while true do
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timesstr = codes:read( 4 )
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_, ontime = pack.unpack( timesstr, "<H" )
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_, offtime = pack.unpack( timesstr, "<H", 3 )
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pwm.start( pwmid )
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tmr.delay( tmrid, ontime * 10 )
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pwm.stop( pwmid )
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if offtime == 0 then break end
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tmr.delay( tmrid, offtime * 10 )
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if pio.pin.getval( exitpin ) == 0 then
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runme = false
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break
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end
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end
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if not runme then break end
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tmr.delay( tmrid, 250000 )
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end
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pio.pin.setlow( led )
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if not runme then break end
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tmr.delay( tmrid, 500000 )
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end
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codes:close()
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