test please delete

[mudskipper]

Very tired.

If I go for a nap, then when I wake up it will be bedtime

[NickFitz]

I had the rest of the scouse for my tea. Very filling

Today having been quite productive, I may try for a comparatively early night, and see if I can manage the same tomorrow. Not yet though

[Alias]

[mudskipper]

[zeitghost]

Morning all.

I'm warm for the first time today.

[zeitghost]

Aren't you supposed to define constants to represent the magick numbers with something meaningful, like THING_BOGGLE_REGISTER = 1 << 7 and so on?

That probably depends on how much of a hurry you're in to do something else at the same time.

As it transpires, it never got used anyway.

And one of the magick numbers is, indeed, #defined.

Didn't make it any more obvious WTF was going on though.

The commented out additional 11 lines of code didn't help much either.

Why I named the interrupt flag as "counter" is truly mysterious.

It probably came from some other POS that I found somewhere.

#define RELOAD_VALUE 8 //generates a 1ms pulse with 4MHz xtal by counting 250 - 2 = 248 

unsigned char counter;
void interrupt() {
  counter++;		//indicate we've had an int
  TMR0 = RELOAD_VALUE;
  INTCON = 0x20;         // enable tmr0 ints & clear tmr0 int flag
}

void main()
{
TRISIO = 0x3b;                  //all gpio as inputs, GPIO.2 PIN 5 as output b'0011 1011'

CMCON = 0x07;                   // comparators off, GPIO 0 & 1 & 2 as digitals

OPTION_REG = 0x81; //pullups disabled, prescaler div by 4 for TMR0: fosc /4 then /4 = 4us: 250 of which are 1ms

 while ( GPIO.B1 == 1 )       // wait for start from gun trigger
 {
 }

TMR0 = RELOAD_VALUE;
INTCON.T0IE = 1;   //enable tmr0 overflow ints
INTCON.T0IF = 0;   //clear tmr0 int just in case
INTCON.GIE = 1;    //and enable interrrupts.

 while( GPIO.B0 == 1 )  //keep generating pulses until we reach the set count of ms in the 3 4017 decade counters
 {
 if ( counter ) //got an interrupt?
 {
 GPIO.b2 = 1;	//yup, set output bit
 counter = 0;
 }
 delay_us( 100 ); //wait 100us
 GPIO.b2 = 0;		//clear output bit
// delay_ms( 1 );
 
 };
 
 while ( 1 );	//all done, just sit here until reset.

 /*{
 if ( counter )
 {
 GPIO.b1 = 1;
 counter = 0;
 }
 delay_us( 100 );
 GPIO.b1 = 0;
// delay_ms( 1 );

 };; //all done.*/

}

The comments in magenta were added once I'd figured out WTF it was doing.

The frightening thing is that all it does is wait for a trigger, then generates 1ms pulses which are counted in an external counter.

I used a PIC12F629 coz it was easier to get 1ms out of that than to use a divider chain.

[zeitghost]

I had the rest of the scouse for my tea. Very filling

Today having been quite productive, I may try for a comparatively early night, and see if I can manage the same tomorrow. Not yet though

That was about the time I intended going to bed, but was foiled by the inevitable Windoze(tm) updates.

[WTFH]

Morning all.


Skiing tomorrow

[SueEllen]

Morning though it feels later.

Went on a short run earlier and was too hot.

I only added gloves to my winter running outfit of long sleeve wicking top, hi viz jacket and tights. Not sure why other people need to wear hats as well.

[FiveTimes]

Morning