Serout and Serin

[JonDallimore]

hello.

I'm playing around with the Serout and Serin commands for the first time. Basically, I would like to use it to transmit the values of variables from chip to chip.
Im using 2x 20M2 pics.

So far... I have this:

pic1:

serout b.7,N4800_32,("b1"),b1

pic2:

serin c.0,N4800_32,("b1"),b1


However, I keep getting a syntax error on the serout, although the serin seems fine. Also, is there a way to transmit more than one variable at a time? Ive tried it but it seems to mix the variables up, so for example if b1=10 and b2=30, it seems like both variables end up being 20 on pic2.

thanks, from a complete novice (with this command at least)

Jon

 

[nick12ab]

Welcome to the Forum.

You need to use for sending:

serout B.7,N4800_32,(b1)

and for receiving:

serin B.7,N4800_32,b1

Pleasee see serin and serout for more information.

 

[JonDallimore]

yep. just answered that one myself, theres a thread here which talks about syntax.

so... does that mean I could use, for example

serout B.7,N4800_32,(b1,b2,b3)

and

serin C.0,N4800_32,b1,b2,b3

to transmit those variables from one pic to another? Would they stay as individual variable values, or, as it seems when I try it, does it add all the variables together and then share them out equally at the other end? I know that sounds ridiculous, but its the only thing I can think of that explains whats happening on the board.

Thanks
Jon

 

[eclectic]

but its the only thing I can think of that explains whats happening on the board.

1. What is happening on your board?

2. AXE091 board.

08M C.2 serout connected to
18M2 C.1 serin

#picaxe 08m2
b0 = 1
b1 = 2
b2 = 3

main:

serout c.2, n2400,(b0,b1,b2) 
inc b0 : inc b1: inc b2

pause 1000

goto main

#picaxe 18M2

Main:

serin C.1, n2400, b0,b1,b2
sertxd (#b0," ",#b1," ",#b2, cr,lf)

goto main

All working fine.

e

 

[JonDallimore]

well i just typed some details about what was happening, but it didnt come up. hey ho. in any case, its working perfectly now.

Thanks to everyone for your help.

 

[eclectic]

well i just typed some details about what was happening, but it didnt come up. hey ho. in any case, its working perfectly now.

Thanks to everyone for your help.

So, what is your program?

And what is the result?
e

 

[JPU]

Hi

I too, walk in the realms of nube ness!

Check out my recent thread which helped me loads!

JPU

 

[JonDallimore]

it was a basic test breadboard using one pic to transmit a variable which controlled a flashing LED on the other pic.

now youve all helped me with the correct syntax etc, its going to form part of a control system for a model railway, proabably using about 10 pics eventually.

thanks everyone. one final question, is there a limit to the number of variables that can be transmitted? looking in the manuals, it looks like 8 variables... or have I read that wrong?

 

[hippy]

The only limit on variables sent is the number of variables available and program memory.

 

[jinx]

now you got serin/serout why dont you have a look at the using the hsersetup it could be more useful,

 

[westaust55]

now you got serin/serout why dont you have a look at the using the hsersetup it could be more useful,

But far more useful on X2 parts using background receive to scratchpad.