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Hi, I need to incorporate a stopwatch type timer in a program I am writing for the BX24. I have looked at, and run, TimerExample.bas but it only counts about 9 seconds before rolling over to zero. and continuing from there. The overflow flag doesn't seem to declare overflow. Anyway I need to be able to count and display the time between button presses. It could be up to 30 minutes or more between presses. Would I be better off using Timer1 or using the GetTime function? Just looking through the book I see that Timer returns the number of seconds since midnight. I guess this would be a good place to start? Any hints would be appreciated. Regards Chris Parker

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I've played with the GetTime and PutTime procedures ... they're fine if you don't need accuracy of better than one second. Peter Anderson has a digital clock for the BX-1 on his site that moves to the BX-24 easily ... kinda cool. If you need better than whole second resolution, then the Timer function looks to be the way to go. You can reset the clock to "midnight" with a call to PutTime(0, 0, 0.0). I haven't played with the Timer function, but according to the manual it looks as if it shouldn't rollover till midnight. - Nick - Chris Parker wrote: > > Hi, > > I need to incorporate a stopwatch type timer in a program I am writing for the BX24. I have looked at, and run, TimerExample.bas but it only counts about 9 seconds before rolling over to zero. and continuing from there. The overflow flag doesn't seem to declare overflow. Anyway I need to be able to count and display the time between button presses. It could be up to 30 minutes or more between presses. > > Would I be better off using Timer1 or using the GetTime function? Just looking through the book I see that Timer returns the number of seconds since midnight. I guess this would be a good place to start? > > Any hints would be appreciated. > > Regards > Chris Parker > > [Attachments have been removed from this message] > > --------------------------------------------------------------- > [Image] > Click Here

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From: Nick Taylor <> > I've played with the GetTime and PutTime procedures ... they're fine > if you don't need accuracy of better than one second. Peter Anderson > has a digital clock for the BX-1 on his site that moves to the BX-24 > easily ... kinda cool. If you need better than whole second resolution, > then the Timer function looks to be the way to go. > [...] Yes, I agree that Timer is probably the way to go for this application. But GetTime/PutTime both have a resolution of about 2 ms, not integer seconds. BTW, the Timer function is essentially identical to the functions of the same name in QuickBasic and Visual Basic, and it has the same Cinderella problem at midnight :-) >Chris Parker wrote: >> [...] >> Anyway I need to be able to count and display the time >> between button presses. It could be up to 30 minutes >> or more between presses. >> [...] -- Frank Manning -- NetMedia, Inc.

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Chris Parker <> wrote: > [...] > I have looked at, and run, TimerExample.bas but it only > counts about 9 seconds before rolling over to zero. and > continuing from there. The overflow flag doesn't seem to > declare overflow. > [...] TimerExample was intended for BX-01 systems, and hasn't been adapted yet to the BX-24. Here's the modification needed for the BX-24 -- at the beginning of module Timer1.bas, these statements appear: ' Timer/Counter1 overflow flag. Private Const TOV1 As Byte = bx10000000 TOV1 is at a different location in the BX-24. If you make this change: Private Const TOV1 As Byte = bx00000100 ' BX-24 the overflow flag should work OK. The main intent of the example program (as well as the edge capture and PWM example) is to illustrate how you can get low-level access to machine registers. Unfortunately, BX-01 and BX-24 (Atmel 8515 and 8535) registers are similar but not identical. -- Frank Manning -- NetMedia, Inc.

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