Interupts and Command string

[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

[Tissy]

Sorry Steve, don't understand what you mean.

Maybe i haven't had enough 'beer'.

This is what i have come up with so far, but its still not working.

USARTInterrupt:
    '    Here's the interrupt routine

    HSERIN [Qualifier]
    Branch QUALIFIER,[Sub1,Sub2,Sub3]

Sub1:
    HSERIN [DEC2 hours, DEC2 Minutes, DEC2 Seconds, DEC2 suseconds]
    Write 5, hours
    Write 6, minutes
    Write 7, seconds
    write 8, suseconds
    HSEROUT ["You sent Red", DEC2 hours, DEC2 Minutes, DEC2 Seconds, DEC2 suseconds]
return

Sub2:
    HSEROUT ["You sent Blue"]


Sub3:
    HSEROUT ["You send Green"]

Resume
enable interrupt

I guess i want it to check that the qualifier is either 'Red', 'Blue', or 'Green', If it isn't then come out of the interupt and wait for the next serial string. This is the bit of code i am missing and having problems with !!

If for example the qualifier Red is received, then it jumps to the Sub1 routine and captures the other 8 bytes.

Am i on the right tracks with what i have done so far? Can you assist with the qualification side?

Cheers,

Steve

[mister_e]

Something to mess 'round with i guess this weekend for me.. one more

How about that untested version

USARTInterrupt:
    '    Here's the interrupt routine

    HSERIN [DEC Qualifier]
    Branch QUALIFIER,[Sub1,Sub2,Sub3]

Sub1:
    HSERIN [DEC2 hours, DEC2 Minutes, DEC2 Seconds, DEC2 suseconds]
    Write 5, hours
    Write 6, minutes
    Write 7, seconds
    write 8, suseconds
    HSEROUT ["You sent Red", DEC2 hours, DEC2 Minutes, DEC2 Seconds, DEC2 suseconds]
    Goto GetOutOfHere

Sub2:
    HSEROUT ["You sent Blue"]
    Goto GetOutOfHere

Sub3:
    HSEROUT ["You send Green"]
GetOutOfHere:
Resume
enable interrupt

And be sure you have some delay between each PC send.. i Mean wait between QUALIFIER and the rest of the process. Some VBTimer are really usefull in those case.

Personnally, i never mess with string handling. Just use BRANCH and send the according value. Time saving and work anyway.

[Tissy]

Sorry Steve, that didn't work.

I presume with this code it is looking for 0,1 or to be the qualifier?

If so, how do i get it to look for red, green or blue as the qualifier.

Thats what i would like it to perform as a test example. ie if VB sends out Red, it then goes to the Sub1 routine and then captures the follwoing eight bytes.

If Blue is sent as the qualifier, then it jumps to Sub2 and just sends out a text string.

Any ideas?

I've messed with the code i have so far and with your modified example as above, but no joy.

This is driving me round the twist, been working on this piece of code for about a week now.

Many thanks again,

Steve

[mister_e]

you may look at the Melanie example
http://www.picbasic.co.uk/forum/showthread.php?t=573

Maybe something to play around.

As i said, i never waste my time 'round string parsing in a PIC. I keep my code space for something else than that.