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TIFR1_ARDUINO UNO

 
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Printpix52

Bascom Member



Joined: 18 Jun 2014
Posts: 282
Location: D.F.
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PostPosted: Sat Jun 06, 2020 7:09 pm    Post subject: TIFR1_ARDUINO UNO Reply with quote
Hello Bascom friends !!!
Suppose we have our Arduino Uno card with a frequency of 16 Mhz and Prescaler at 256

Maximum timeer period (ms) = (65536)(256) / 16000000 = 1.0486 = 1048 ms

Old Bascom worked like this TIFR.x
x=0 for timer0
x=2 for timer1

Currently bascom 2.0.8.2

TIFR1
It does not mark error but it compiles well but my Arduino card does not flash led Pb.5

My simple code is this.

Code:
$regfile = "m328pdef.dat"
$crystal = 16000000
$hwstack=40
$swstack=16
$framesize=32



Baud = 9200


Config Timer1 = Timer , Prescale = 256
Start Timer1




Config Portb.5 = Output

Led Alias Portb.5


Do
   If TIFR1=1 then
      TIFR1=1 : toggle led
   End If
loop

End
 



If I change TIMER1 for this, my Arduino Uno card works.

Code:
Do
   If Timer1 = 1 Then
      Timer1 = 1 : Toggle Led
   End If
loop
 


For 1000 ms exact it would be 62500 my Arduino board works well.

Code:
$regfile = "m328pdef.dat"
$crystal = 16000000
$hwstack=40
$swstack=16
$framesize=32



Baud = 9200


Config Timer1 = Timer , Prescale = 256
Start Timer1




Config Portb.5 = Output

Led Alias Portb.5


Do
   If Timer1 = 62500 Then
      Timer1 = 0 : Toggle Led
   End If
loop

End
 


Why does TIFR1 not work? Shocked Shocked Shocked
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O-Family

Bascom Expert



Joined: 23 May 2010
Posts: 338
Location: Japan
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PostPosted: Sun Jun 07, 2020 4:01 am    Post subject: Reply with quote
Code:

Do
   If Tifr1.tov1 = 1 Then
      Tifr1.tov1 = 1 : Toggle Led
   End If
loop
 

If you need 1Hz
Code:

   Config Timer1 = Timer , Prescale = 1024 , Clear Timer = 1
   Compare1a = 15625 - 1

   Do
      If Tifr1.ocf1a = 1 Then
         Set Tifr1.ocf1a
         Set Led
         Waitms 100
         Reset Led
      End If
   Loop
 
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Printpix52

Bascom Member



Joined: 18 Jun 2014
Posts: 282
Location: D.F.
mexico.gif
PostPosted: Sun Jun 07, 2020 5:07 pm    Post subject: Reply with quote
thanks O-Family
you are such a great geniour
love this forum. Go !!!! Very Happy
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