Dmx Solved !!!!!!!

[JEC]

Two thoughts...

First, I made a typo when I posted the original code:

RCREG = dummy is bad. It should be
dummy = RCREG to clear out the buffer.

As far as catching the early data goes, it's probably more elegant to do something like

while x < aminus
'wait for a byte
'discard it
'increment x
WEND

This way, if aminus = 0 and your address = 1, the trashing routine is skipped altogether.

...

And you're exactly right - there's no reason why you should need to use HSERIN at all to grab the last byte. I was experimenting back and forth reading the registers and using HSERIN. Once I got it stable, I didn't change everything to match.

So you can leave it, or change it to say

newlevel1 = RCREG

Either way, it should work fine.

Curious - what are you building?

John

[alanmcf]

Hi John--

I tried the While:wend loop you recommended to compensate for the adrress offset, but it didn't fix it... what DID fix it was getting rid of the HSERIN command-- when I changed that to newlevel1 = rcreg, it zeroed in on the correct address! I'm wondering if the HSERIN statement has some overhead that causes it to miss that first target byte?

Regarding what I'm building, I replied to you offlist, so look for a message there.

Thanks again--

--Alan

PS: Are there any gotchas if I want to use the USART to transmit DMX?