SERIN Not Working, SEROUT Working

[cc1984]

ADCON1 = %00001111 'turn off adcs set to digital i/o

The above line takes over after the configs so no matter what PBADEN is the pins should be digital.

You have

@ CONFIG PBADEN = ON ' turn off port b analog inputs

but you want to set it to OFF if you want it digital on POR
From the P18F4520.INC

Like Darrel, it has been awhile since I have used SERIN. You may want to try a simple routine sending just one variable to trouble shoot this.

The limiting resistor like the manual shows is all you need. Pull the diode.

If I think of something else I will let you know.

I pull the diode, thanks. I'll keep on trying, thanks for you help.

[mackrackit]

I bugged together a test because I can not remember.

From a terminal on both of the following examples I am sending

83,79

Example #1

V1	VAR	BYTE
V2	VAR	BYTE
T_MAIN:
SERIN PORTC.7,N2400,V1,V2
PAUSE 1000
SEROUT PORTC.6,N2400,[V1,V2,10]
PAUSE 250
GOTO T_MAIN

Displays
83

Example #2

V1	VAR	BYTE
V2	VAR	BYTE
T_MAIN:
SERIN PORTC.7,N2400,#V1,#V2
PAUSE 1000
SEROUT PORTC.6,N2400,[V1,V2,10]
PAUSE 250
GOTO T_MAIN

Displays
SO

[cc1984]

I pull the diode, thanks. I'll keep on trying, thanks for you help.

I made a reduced size test program and still got the same results. Finally, with nothing else to try I changed the SERIN pin from PORTB.7 to another pin I was not using (PORTC.1). Works like a charm.

I guess it is either a bad chip or some obscure setting for portb.7 I missed. Thanks for all the help.

[mackrackit]

I made a reduced size test program and still got the same results. Finally, with nothing else to try I changed the SERIN pin from PORTB.7 to another pin I was not using (PORTC.1). Works like a charm.

I guess it is either a bad chip or some obscure setting for portb.7 I missed. Thanks for all the help.

Interesting. I still do not see the problem in your code (PORTB.7) so it must be hardware...
Or maybe the wrong pin,,, typo???

rcx var PORTB.7 'rs-232 input on portc.7

Or a bad connection?

[cc1984]

Interesting. I still do not see the problem in your code (PORTB.7) so it must be hardware...
Or maybe the wrong pin,,, typo???


Or a bad connection?

Could be a bad connection. I have it installed on a test board. I am making the permanent board which should only be traces, not a bunch of wires. Hopefully, that will remove my ghost.

Thanks for all the help, unfortunately the code was the fun part, drawing up the circuit and making the cca is not as fun.