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https://github.com/elua/elua.git
synced 2025-01-25 01:02:54 +08:00
42ff856578
- new addition to the PIO module: now you can use pin ranges in PIO expressions. For example: gpio.PA_3_6_DIR = gpio.OUTPUT -- make pins 3-6 from PORTA outputs gpio.PB_0_30_PULL = gpio.PULLUP -- activate pullups on all but the last pin of PORTB gpio.PB_3_6 = 11 -- set value 10 (1011) to pins 3-6 of PB (so PB.6 == 1, PB.5 == 0, PB.4 == 1, PB.3 == 1 ) value = gpio.PB_2_9 -- read the value of pins 2-9 of PB into 'value' Of course, one can still specify a single pin instead of a range. This is still tested, but seems to work fine for now. - romfs/ samples updated to work with the new module name and syntax - small fix to buf.c (in the BUF_MOD_INCR macro).
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 = "PF_0", "PF_1", "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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gpio.dir[ led ] = gpio.OUTPUT
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gpio.dir[ startpin ], gpio.dir[ exitpin ] = gpio.INPUT, gpio.INPUT
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gpio.pull[ startpin ], gpio.pull[ exitpin ] = gpio.PULLUP, gpio.PULLUP
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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 gpio[ startpin ] == 1 do
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if gpio[ 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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gpio[ led ] = 1
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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 gpio[ 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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gpio[ led ] = 0
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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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