Instant Interrupts - Revisited

[Squibcakes]

Hi Darrel,

This is pretty neat code Pretty amazing really. Hahaha

Anyway, I have a problem with my PIC hanging up because of an Idle State logic level error see <a href="http://www.picbasic.co.uk/forum/showthread.php?t=4301"> Here</a> on a serial input pin.

I dont want to over complicate the circuit with extra hardware to get around this so I thought that I could use you interrupts to to side step this problem and do it all in software.

Unfortunately the TMR1 interrupt stops working as well while waiting for serial data eg

HSERIN [WAIT ("SOME DATA")]

I was hoping that these interrupts routines were bullet proof regardless of what the program was doing.

Any ideas?

Regards
Squib

[Darrel Taylor]

Squib,

TMR1 interrupts will not stop when using HSERIN. Unless the HSERIN is also in an interrupt handler.

As for the Hanging, the USART will give a Framing Error (RCSTA.2) if the RX pin is held low. Check for the error before trying to HSERIN.
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