how to control the incoming data?

[Luckyborg]

i don' know if your application will allow for it, but you can try adding polling throughout your code to have smaller wait times during the check and look for and use the wait command in serin2

main:
... normal stuff
gosub get_data
... more normal stuff
gosub get_data
...
 more normal stuff
goto main

get_data:

serin2 Serial_IN, 84, 50, nodata, [wait (129), x]
nodata:
return

If you can adjust your transmitting device add a bunch of dummy spaces before the transmission so if you miss 1 or 2 no big deal, you weren't going to use them anyway. I''ve used something similar in the past.

[Ioannis]

If it is one off then I suggest to re-design your PCB. You won't have satisfactory results whatever you do besides the Interrupts generated by the USART.

There may be plenty of ideas, but will not respond fast enough.

Ioannis

[mister_e]

RB6 can use Interrupt on change, so yes you can use it.

It show one problem though, it will detect the Start-Bit... so there's big chance that SERIN/DEBUGIN/SERIN2 will not work as expected. But you could roll your own serial routine which will ignore the start-bit. This will work or not depending of your Baudrate and if you go on a ASM or PBP interrupt + home made serial routine. When using Darrel's instant interrupt with PBP type, it need some time to save/restore PBP systems var. Have a look at the following
http://darreltaylor.com/DT_INTS-14/kudos.html

If you create your own PC software, OR if you create your own transmitter with another PIC... then it open a few other possibilities.

But yeah, when at all possible, I prefer the USART interrupt as well.