Interupts and Command string

[mister_e]

Yup that's what i think... just an idea.

So you already figured something like

Disable 
USARTInterrupt:
    HSERIN [Data1, Data2,....]
    '
    '    Data processing or not here
    '
    Resume
Enable

Just read the HSERIN section. You may also use STR modifier too. Dpending what kind of data format you'll use.

[Tissy]

Excellent help, thanks.

I have now managed to get variables sent from VB to PIC.

The code now looks like this:

Start:
    '    Main program loop that make the user happy to
    '    see a LED flashing to mean that something is 
    '    running 
    '
    
    Hserout [hours, minutes, seconds]
    
    toggle userled
    for delay = 1 to 5000       ' use a loop delay to ensure
      pauseus 5                 ' getting interrupt as fast as
      next                      ' possible
    goto start
    

disable interrupt
USARTInterrupt:
    '    Here's the interrupt routine who will make the user
    
    HSERIN [hours, minutes, seconds]

    Write 5, hours
    Write 6, minutes
    Write 7, seconds
  
    resume                      ' get out of here
enable interrupt

However, i can only send over single numerals, ie 0-9. But in the timing functions for Hrs, Mins and Sec it could be upto 59. How do i get the PIC to reconise the double figures. If i try to send them the PIC just hangs.

The write command is to just store the variables in EEPROM for later use.

Thanks for your help,

Steve

[mister_e]

Suppose the actual time is 1:33:56
Send it as 013356

actual time is 1:02:01
send it as 010201

THEN you use the DEC2 modifier
HSERIN [DEC2 hour, DEC2 Minute, DEC2 Second]

[Tissy]

Yup, that worked very well. I'm trying to figure out the methods of sending and receiveing data on 2 languages, PIC and VB.

I managed to get the combining of the timings and it now it reads and outputs very well. Thank you Steve.

I've been reading about qualifiers, but can only see the WAIT command, where as i'm using an interupt, this isn't really what i want.

I want to look for a command sent from VB to signal what routine to jump too. For example in the interupt if the word TIMINGS is received then it reads and stores the subsequent timing variables. But if the word FLAGS is received then it stores the flag variables etc etc.

In VB i would output something like

MSComm1.Output = "Time" & Format(Hours, "00") & Format(Minutes, "00") & Format(Seconds, "00") & Format(SuSeconds, "00")

Is this possible?

As at the moment it will just deal with the 8 numbers it receives, i want it to be more choosy depending what VB sends accross.

Many thanks,

Steve

[mister_e]

for the HSERIN modifier refer to SERIN2

about VB, here's a quote from VB6 Black book pdf

[Tissy]

Thanks Steve.

At the moment i have this code for the interupt, it works as long as i send "Time" as the qualifier.

So in VB it sends:

MSComm1.Output = "Time" & Format(Hours, "00") & Format(Minutes, "00") & Format(Seconds, "00")

Where the PIC command is:

    HSERIN [Wait("Time"), DEC2 hours, DEC2 Minutes, DEC2 Seconds]

Thing is, I don't want it to wait. I want it to look at the serial command comming in and check for the qualifier. So if the qualifier is TIME, it then takes the DEC2 hours, DEC2 Minutes, DEC2 Seconds strings.

However, if the qualifier is FLAG, then it performs a different command, such as:

    HSERIN [flag1, flag2, flag3]

If neither of the qualifiers are met (or any depending how many i need), then it resumes and waits for the next serial input.

Does this make sense, i'm starting to confuse myself !

Cheers,

Steve

[mister_e]

bah as you wish. You can even do some handshake between PIC and PC.

PIC side:

1. Waiting for Flag (must be Fix format 1,2,3 or more character) Lets'say BEER
2. choose according procedure to do (Corect HSERIN), Send Confirmation to PC (OK i got Beer, send me another Crate now)

and there still many other way.. it's up to you