Code:
'---[TMR1 Gate - interrupt handler]--------------------------------------------------
disable
CheckCount:
T1CON.0 = 0 'stop timer1
timercount[index] = TMR1L + TMR1H << 8 'stuff the contents of the timer register into a word
TMR1L = 0 'reset counter to 0...
TMR1H = 0 'upper 1/2 too
If delay < 1001 then 'delay user access to the buttons until the count "average" has stabilized.
delay = delay +1
endif
If timercount[index] > timerave[index] +70 then 'Help provide a speedy recovery for released buttons
timerave[index] = timercount[index]
endif
if (timercount[index] - timerave[index]) < AvgCount Then Close
timerave[index] = timerave[index] - (timerave[index]/AvgCount) 'average the count so you have a reference to compare....
timerave[index] = timerave[index] + (timercount[index]/AvgCount) '...with timercount
Goto checkscore
Close:
timerave[index] = timerave[index] - (timerave[index]/(AvgCount/16))
timerave[index] = timerave[index] + (timercount[index]/(AvgCount/16))
Checkscore: 'Determine if a button is pressed (count is less than average)
If timerave[index] - (timerave[index] /50) > timercount[index] and (delay > 1000) then
gosub ServiceHardw 'Signal that a button is pressed.
endif
If index < 5 then 'Increment to the next touch sensor input
index = index +1
else
index = 0
Endif
CPSCON1 = index
TMR0 = 0 'reset timer 0
T1CON.0 = 1 'restart timer1
@ INT_RETURN
enable
'----------SUBROUTINES--------------------------------
'Subroutine for Button 1-----------------------------
Butt1:
Digit4 = 1
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine for Button 2-----------------------------
Butt2:
Digit4 = 2
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine for Button 3-----------------------------
Butt3:
Digit4 = 3
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine for Button 4-----------------------------
Butt4:
Digit4 = 4
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine for Button 5-----------------------------
Butt5:
Digit4 = 5
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine for Button 6-----------------------------
Butt6:
Digit4 = 6
gosub sortdigits
Pause 500
digit4 = 0
gosub sortdigits
Return
'Subroutine to display numbers on 7-segment display-----------
display:
shiftout S_in, LEDCLK, 1, [LEDData]
return
'Subroutine to map numbers to the correct LED segments------
getpattern:
lookup numeral,[$EE,$28,$CD,$6D,$2B,$67,$E7,$2C,$EF,$6F], LEDData 'MSBFirst / Right side up digits
return
'Subroutine to read time from RTC--------------------
gettime:
RST = 1 ' Ready for transfer
' Read all 8 RTC registers in burst mode
Shiftout IO, SCLK, LSBFIRST, [$bf]
Shiftin IO, SCLK, LSBPRE, [rtcsec, rtcmin, rtchr, rtcdate, rtcmonth, rtcday, rtcyear, rtccontrol]
RST = 0 ' Reset RTC
mathtemp =(rtcsec>>4)*10+(rtcsec & $0F) 'convert BCD seconds into Decimal seconds
digit1 = mathtemp dig 0 'digit 1 = ones of seconds
digit2 = mathtemp dig 1 'digit 2 = tens of seconds
mathtemp =(rtcmin>>4)*10+(rtcmin & $0F) 'convert BCD minutes into Decimal minutess
digit3 = mathtemp dig 0 'digit 3 = ones of minutes
' digit4 = mathtemp dig 1
gosub sortdigits
Return
'Subroutine to sort out the buttons-------------------
ServiceHardw:
branchl index, [Butt1,Butt2,Butt3,Butt4,Butt5,Butt6]
return
' Subroutine to write time to RTC------------------------
settime:
RST = 1 ' Ready for transfer
Shiftout IO, SCLK, LSBFIRST, [$8e, 0] ' Enable write
RST = 0 ' Reset RTC
RST = 1 ' Ready for transfer
' Write all 8 RTC registers in burst mode
Shiftout IO, SCLK, LSBFIRST, [$be, rtcsec, rtcmin, rtchr, rtcdate, rtcmonth, rtcday, rtcyear, 0]
rst = 0
Return
'Subroutine to lookup numbers and put them in the correct LED digit-----------
sortdigits:
numeral = digit4
gosub getpattern
swap LEDData.0, LEDdata.4 'Swap "DP" and "G" segments on upsidedown digits
gosub display
numeral = digit3
gosub getpattern
LEDData.4 = 1 'Turn on lower DP in colon
gosub display
numeral = digit2
gosub getpattern
swap LEDData.0, LEDdata.4 'Swap "DP" and "G" segments on upsidedown digits
LEDData.0 = 1 'Turn on upper DP in colon
gosub display
numeral = digit1
gosub getpattern
gosub display
High Latch
pause 1
low Latch
return
'Main loop - Gets the time and displays it----------------------------------
main:
gosub gettime
gosub sortdigits
pause 100
Goto main ' repeat until nauseated...
End
Interruptus Frustratus
I had to change the Timer resource from TMR2 to TMR0 and I enabled it's interrupt unnecessarily. Thanks! Turning TMR0 interrupt off helped but didn't completely cure the problem.
Originally Posted by mister_e
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