Triggering 5 TTL clocks simultaneously

[TurboLS]

Also, I tried looking at the ADCON1 register, and i guess if I am reading from the table properly... to set PORTA.2 to digital in, I should say ADCON1 = %00001101 cuz that's where the D and the AN2 meet.

I am still having a problem with the OnPushButton command and apparently I have to use END IF commands, which I am not sure how I will implement just yet.

[TurboLS]

I got it down to 6 errors, all with my IF statements. Here is what I have for a generic IF line:

IF PushButtonOnPORTABIT2 = 1 THEN GOTO vertloop ELSE GOTO buttonloop

on the following line i have

ENDIF

and doing that got rid of 3 of the errors, but now I need to figure out why it doesn't like my then goto / else goto commands.

For each of my 3 if statements, I get

bad expression
bad expression or missing then

[TurboLS]

OK, i know i have been posting a lot lately, but now i am down to 2 errors, both associated with

IF PushButtonOnPORTABIT2 = 1 then

I think it has something to do with me setting the ADCON1 register incorrectly.

[TurboLS]

OK, I fixed it (I think) to where I have no compiler errors.

basically I had to change the above line to

IF PORTA.2 = 1 then

[TurboLS]

So yeah I am still stuck with the whole reset clock thing. Is there a way I can generate a clock in hardware that is not a 50% duty cycle? By using one of the timer functions perhaps?

I was also wondering approximately how fast each of the commands in my program would take to process. Knowing that, I would be able to generate the reset clock by estimating the time in usecs.

thanks again for all the input.

[mister_e]

One thing i figure is to use the OSCLKO pin and connect to RB0 or else interrupt source. Once you'll be the in the interrupt routine, you'll be able to do everything. Generate all your delay and pin level. Will be a bit tricky to get the perfect timing but not impossible.

If you want to generate a 4MHZ clock, you'll need a 8MHZ crystal. Interrupt on rising or falling edge. Interrupt routine will generate your R, H1 and H2 frequency in one shot.

Depending your crystal speed, your instruction will be executed in few msec or less.

BUT for that kind of stuff where accuracy and precision is important, you'll probably need to do your delay and some test in assembler. Assembler instruction can be executed in 1 or 2 frequency cyle. Let's say at 8MHZ, 1 intruction every (1/(8Mhz/4)) = 0.5 uSec. Can be usefull to have a PIC who have an internal PLL to multiply your cystal speed.

If you have a 8MHZ crystal, execution time will be 4 times faster so from 0.5uSec to 0.125 uSec.

[TurboLS]

The reset, H2, and H1 will be about 3.6kHz. I don't know if there is a way I can get that with the multipliers.

Is there like a table where I can calculate the execution times? I know that "time-sensitive" commands take 1 usec with a 20Mhz clock (which is what I am using).

How long do if statements and such take, jumps to different parts of the program (like when I use the GOTO commands)?