Instant Interrupts - Revisited

[Darrel Taylor]

I don't understand your language, so it's hard to tell what's going on.
But here's a couple problems I can see...

LCDOUT STR cadena,20 'no aparece nada (nothing appears in lcd

should be...

LCDOUT STR cadena\20

And the reason you're missing characters, is probably because the data is received by the interrupt handler, but it's being put into the "buffer" array in the main loop. That should be done in the handler too.
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[nacho7577]

Thanx for your answer.

I understand you about the understanding the code.... me too sometimes....

OK lcdout cadena\20

>And the reason you're missing characters, is probably because the data is >received by the interrupt handler, but it's being put into the "buffer" array in >the main loop. That should be done in the handler too.
¿? Something like this?:

'---[RX - inmterrupt handler]----------------------------------------------
Int_RX:
PORTA.1 = 1 'to check RX int has come
hserin [char]
cadena[i] )= char
i = i +1
@ INT_RETURN

but lcd displays rare....

Don´t worry i´ll figth with it.

Thanx for all.

[Darrel Taylor]

Better, but it still needs a way to limit it to the "bounds" of the array. Or, it will overwrite all your other variables. Maybe like this.

'---[RX - inmterrupt handler]----------------------------------------------
Int_RX:
    PORTA.1 = 1 'to check RX int has come 
    hserin [cadena(i)] 
    i = i +1
    if i >= 20 then i = 0
@ INT_RETURN

Of course this still has the problems of not knowing how many bytes were received, if the buffer overflows, if USART errored etc.

You might want to take a look at this program from Joe S.

LCD serial backpacks
http://www.picbasic.co.uk/forum/showthread.php?p=28336

It has a complete "Circular Buffer" using DT_INTS.
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