Decimal variable input with HSERIN command

[pxidr84]

Hello,

I would like to do a simple thing with the HSERIN command :

I send from my computer the ASCII chain "A1234". What I want it's to store the number (1234) in a variable (for instance, "vartest").
Also, if I send from my computer the ASCII chain "B0005", I want to store the number (5) into an another variable (let's say "vartest2").

I think it's quite simple, but I don't know how to handle that within a loop.

Thanks

[HenrikOlsson]

Hello,

Perhaps something like this

CMD VAR BYTE
TestVar1 VAR BYTE
TestVar2 VAR BYTE

HSERIN [CMD]

Select Case CMD
  Case "A"
    HSERIN[DEC4 TestVar1]
  Case "B"
    HSERIN[DEC4 TestVar2]
END SELECT

/Henrik.

[pxidr84]

Thanks a lot Henrik, it works fine.

The only problem I got is that HSERIN hangs my loop...

[HenrikOlsson]

Yes, that's the way it works....
If the loop time is less that 2 "byte-times" you can poll the receive flag each time thru the loop and get the byte(s) from the receive buffer. If the loop time is longer you need to use interrupts.

/Henrik.

[pxidr84]

Yes, that's the way it works....
If the loop time is less that 2 "byte-times" you can poll the receive flag each time thru the loop and get the byte(s) from the receive buffer. If the loop time is longer you need to use interrupts.

/Henrik.

Hmm right now I just want to retreive a 4-number decimal value in my loop, and put it in the "ref" variable. I don't even need a letter, I just send raw numbers (in ASCII) , like "0586" from my computer.
The problem is that in my program I use very precise and quick timing interrupts so it's a bit annoying.
Maybe there is a way to send not an ASCII number but directly a hex number, so 0586 will be 24A... max value is 1200 (4B0, so I use 2 bytes)

I have no idea how to use the RX buffer...

[pedja089]

You can add timeout label. Then it won't hang forever..
HSERIN 10,TimeOut, [CMD]

Select Case CMD
  Case "A"
    HSERIN  10,TimeOut,[DEC4 TestVar1]
  Case "B"
    HSERIN 10,TimeOut,[DEC4 TestVar2]
END SELECT
TimeOut: