How do I format HSERIN?

[skimask]

I am using a 16f688 and I use HSEROUT with no problems. I now need to send some data back to the 16f688. How do I format the HSERIN command if I don't know how much data is coming?

HSEROUT has provisions for an 'ending' character. You can fill an array of bytes up to said 'end' character. See HSEROUT in the PBP manual. Look at the STR modifier.