Software serial disable ?

[Andreas]

Hello friends

I have to use the Software Serial unit from the ccs compiler, which works already very fine !

BUT I also have to make it configurable in that way, that I have to be able to disable it and use this port pin for other functions !

Is there a clean way to disable the soft serial at run time ?

Any help appreciated.

best regards
Andreas

[Ttelmah]

Just use the pins.

The software serial does nothing 'to' the hardware. It only acts on the pins when you use it. You can drive the pins just as normal.
It only reads the RX pin, when you do a kbhit, or a getc, and only writes to the TX pin when you do a putc.

[Andreas]

Hello Ttelmah

Thank you for the clarification, but I had the impression, that if I leave the Set Statement in , then i see some little distortion on an regular timer Interrupt which seems to go when removing the set Statement !?

I am not sure if this a correct impression.

Best regards
Andreas

[Ttelmah]

'Set statement'?.

The only time #USE RS232 for a software unit has any effects on interrupts, is if you are configuring it to use an external interrupt, and enabling receive buffering, or if you select the 'DISABLE_INTS' option, and then only during the actual data transmission/reception. Or (of course), the 'old one' of having a putc/getc, both inside and outside an interrupt, when you will get the compiler warning 'interrupts disabled to prevent re-entrancy'.