Do I need a pause?

[tazntex]

Not much has changed since my last posting, I haven't taken the hammer out of the toolbox just yet. The rf modules are capable of 5000bps so I did move up from 2400. I've been over under and through this forum, and saw a post where bruce had use a 100k to pull down the data, if I read this correctly, line coming in to reduce noise on the input. I have monitored my data on the serial input of the 628a, looks pretty clean. I haven't had any luck getting rid of the little gremlin who pops up every now then and holds the output pin high. Anyhow I am open to criticism, constructive preferred

[Archangel]

Hi Taz.
I see you have 2 ports as inputs, what is connected to them? PortB.7, I see no reference to in code, possibly my bad eyesight, but if open as input might allow "gremlins" to leak in.

[mackrackit]

address con %00000001
This equals 1

chk_sum = (address + address)
chk_sum = 2

if A = 0 && B = 0 then keydata = %10101111
keydata = 175

chk_sum = chk_sum + (keydata + keydata)
chk_sum = 2 + 175 + 175

chk_sum = 352

chk_sum var byte
byte = 0 to 255

Maybe try WORD sized variables.

Or maybe I am missing something

[tazntex]

Hello again Dave, you have a good point however I am using Bruce's idea for validating the in coming data. It is my understanding that the checksum will overflow which should not be a problem. I've been using it and that part doesn't seem to be the problem however I will experiment with it to see. I hope your right. Thanks Dave and 73

[mackrackit]

OVERFLOW...Yep I was missing something.
I will keep looking at it.

Do not get the hammer yet.