Serin Not Recognizing Qualifier From Another PIC

[JESmitter]

Thank you Henrik for you prompt reply.

The Receiver PIC's GPIO.5 is indeed configured as an input and the two systems do share a common ground.

Transmit PIC - GPIO.2 is set as an output and the outbound packet is sent by SEROUT DataOut,1,[ProgID,IDByte]

Receive PIC - GPIO.5 is set as an input and is configured to receive the packet by SERIN PrgIn,1,5000,PassProg,[ProgIDRx],IDByteRx

I didn't include the transmitter PIC code because the oscilloscope verified that the packet is being sent.

I wonder... what logic state should SERIN be idling at? I have it at logic high to generate a "mark" condition.

[amgen]

two thoughts looking at your code.........
...ProgIDRx = $A............ did you CLEAR ProgIDRx after reception and might need to be ....$"A" not sure but

[JESmitter]

Hi Amgen,

Thanks for the reply. Yes, ProgIDRx is cleared. And its value is $A (or10). But, I haven't been able to receive it yet because nothing is being received. SERIN always exits upon the 5 second Timeout variable "PassProg" as if nothing is present at the pin.

And, in addition, If I had noise on the pin, SERIN would never time out. So, that indicates that SERIN is, at least, partially working, I would think.

[rocket_troy]

I don't really use serin so I can't be of much help, but just to educate me: isn't the contents inside the square brackets a qualifier or filter - like the WAIT modifier in serin2?

Troy

[amgen]

one easy thing to do to troubleshoot your system....... add a temporary serout for the receiving 283 to see receptions and get all that working first as you continue with the rest of your code.... (I know you know all this) but it is like proofing the functions as you go along

[JESmitter]

Thanks Amgen. Good advice!

[JESmitter]

Still no progress. Beating my head against my desk on this one!

[amgen]

if using 12f683 ..... check your OSCCON ..... no PLL on 12f683 unless there is new 12f....

[JESmitter]

Hi Troy,
Here's my OSCON
OSCCON = %01100000 ' Set system clock 4MHz(1MHz internal w/x4 PLL enabled)

My SERIN SYNTAX
SERIN PrgIn,1,5000,PassProg,[ProgIDRx],IDByteRx ' Check for new I.D.

My Qualifier Variable
ProgIDRx VAR BYTE ' Received Programmer ID

My Byte of interest
IDByteRx VAR BYTE ' New IDByte

This should work, right???

[JESmitter]

Hi Troy,

Yes, the bracketed variable is the qualifier. SERIN won't receive or pass the data until it recognizes the presence of the qualifier in the received packet. For some reason, my qualifier is not being recognized or, GPIO.5 isn't correctly configured for SERIN? Or, something else???

[rocket_troy]

Hi Troy,

Yes, the bracketed variable is the qualifier. SERIN won't receive or pass the data until it recognizes the presence of the qualifier in the received packet. For some reason, my qualifier is not being recognized or, GPIO.5 isn't correctly configured for SERIN? Or, something else???

Then, don't you need to nominate the qualifier as being something? like:

Serin PrgIn,1,5000,PassProg,["ABC"],IDByteRx ' Wait for 5 seconds for "ABC" to arrive then put contents in IDByteRx?

Troy