Is it ok to put things in loop like I have done?
The code in the ISR still looks a bit long. Maybe put that stuff in the START label being you are looping back to it. Have a GOSUB in there to TOGGLE FAST.
In the end I think the only thing you want in the ISR is the serial receive.


From the PicMultiCalc program the copy defines is what you want at the beginning of your code for this.

Your HESER statement is not quite right. Look at SERIN2/SEROUT2 for examples on the syntax, it is the same as HSERin/out. Basically you need [ ] at the beginning and end.

Now I am going to suggest that you leave your code for a bit and and work on some simple test codes to make sure you have everything working. I am sure you did that at the beginning of this project but several things are changing now, adding new "stuff" and restructuring the code.

RF is difficult at best so start with wires. Do the HSERIN in the ISR and just simply have it do one thing, light an LED. Then work on feed back from the receiver.

Which brings up another thing. If I am following this correctly the RF is two way. ZUnless you have a two way module you will want to kill the power to the transmitter when you are receiving. I do not see this in the code but maybe it is there.