Embedded Files
Simple example on how can be generated the DTMF tones.
2 pins are defined as output pin and mut be put in parallel using 2 resistances (1 - 10Kohm)
Simply call the sub 'DTMF' using with the symbol desired , example DTMF "#"
The output must be
CODE: xxxx.bas
'DTMF test program - cicciocb 2019
' call the sub DTMF with the symbol in string format
'
D0=16:D1=5:D2=4:D3=0:D4=2:D5=14:D6=12:D7=13:D8=15:D9=3:D10=1
dim rows(4) = 697, 770, 852, 941
dim cols(4) = 1209, 1336, 1477, 1633
dim SYMB$(16) = "1", "2", "3", "A", "4", "5", "6", "B", "7", "8", "9", "C", "*", "0", "#", "D"
pin_T1 = D7 'output pin tone 1
pin_T2 = D8 'output pin tone 2
DTMF "0" 'send a tone
end
sub DTMF(sim$)
local z
for z = 0 to 15
if (SYMB$(z) = ucase$(sim$)) then
pin.tone pin_T1, cols(z and 3)
pin.tone pin_T2, rows(z >> 2)
pause 2500 ' duration of the tone
pin.tone pin_T1, 0
pin.tone pin_T2, 0
exit for
end if
next z
end sub
CODE: dtmf2.bas
'DTMF test program - cicciocb 2019
' call the sub DTMF with the symbol in string format
' use the new variables HtmlEventButton$ and HtmlEventVar$
D0=16:D1=5:D2=4:D3=0:D4=2:D5=14:D6=12:D7=13:D8=15:D9=3:D10=1
dim rows(4) = 697, 770, 852, 941
dim cols(4) = 1209, 1336, 1477, 1633
dim SYMB$(16) = "1", "2", "3", "A", "4", "5", "6", "B", "7", "8", "9", "C", "*", "0", "#", "D"
pin_T1 = D7 'output tone 1
pin_T2 = D8 'output tone 2
COUNTER.SETUP 1, D5, 1
COUNTER.SETUP 2, D4, 1
timer0 1000, freq
cls
c$ = "abcd"
s = 1
ck = 0
a$ = ""
a$ = a$ + "<table>"
a$ = a$ + "<tr><td>" + button$("1", butpress) + "</td><td>" + button$("2", butpress) + "</td><td>"
a$ = a$ + button$("3", butpress) + "</td><td>" + button$("A", butpress) +"</td></tr>"
a$ = a$ + "<tr><td>" + button$("4", butpress) + "</td><td>" + button$("5", butpress) + "</td><td>"
a$ = a$ + button$("6", butpress) + "</td><td>" + button$("B", butpress) +"</td></tr>"
a$ = a$ + "<tr><td>" + button$("7", butpress) + "</td><td>" + button$("8", butpress) + "</td><td>"
a$ = a$ + button$("9", butpress) + "</td><td>" + button$("C", butpress) +"</td></tr>"
a$ = a$ + "<tr><td>" + button$("*", butpress) + "</td><td>" + button$("0", butpress) + "</td><td>"
a$ = a$ + button$("#", butpress) + "</td><td>" + button$("D", butpress) +"</td></tr>"
a$ = a$ + "</table>"
html a$
onhtmlchange changeme
DTMF "0"
wait
freq:
print counter.freq(1), counter.freq(2)
return
butpress:
print "butpress", HtmlEventButton$
DTMF HtmlEventButton$
return
changeme:
print "changeme", HtmlEventVar$
return
sub DTMF(sim$)
local z
for z = 0 to 15
if (SYMB$(z) = ucase$(sim$)) then
pin.tone pin_T1, cols(z and 3)
pin.tone pin_T2, rows(z >> 2)
pause 2500 ' duration of the tone
pin.tone pin_T1, 0
pin.tone pin_T2, 0
exit for
end if
next z
end sub
This is with a DTMF keyboard
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