Serin Serout Help

[mackrackit]

Do not forget
INCLUDE "modedefs.bas"

And if you do not have enough pins for the flow control.
From the manual. We sometimes refer to this as "waiting" for a character to know where we are.

The list of data items to be received may be preceded by one or more qualifiers enclosed within brackets. SERIN must receive these bytes in exact order before receiving the data items. If any byte received does not match the next byte in the qualifier sequence, the qualification process starts over (i.e. the next received byte is compared to the first item in the qualifier list). A Qualifier can be a constant, variable or a string constant. Each character of a string is treated as an individual qualifier.

[MangoKid]

thanks for the post unfortunately i have made little progress. I have set the flowpin using Serin2 and serout2 and i am using proper pins. my baud rate may have some issues I'm trying to use the slowest one for now. Currently the circuit does nothing, no flashing or anything, but i have verified with an oscilloscope that data is being sent. Hear is the new code.

send:
CLEAR
DEFINE OCS
TRISA = %000000000

LOOP1:
SEROUT2 PORTA.0\PORTA.1, 3313, [DEC 77]
GOTO LOOP1:
END

recive:
CLEAR
ANSEL = 0
CMCON0 = 7
X VAR BYTE

LOOP1:
SERIN2 GPIO.1\GPIO.3, 3313, [DEC X]
pause x
GPIO.0 = 1
PAUSE x
GPIO.0 = 0
PAUSE X
GOTO LOOP1
END

thanks again any help would be appreciated.

[MangoKid]

Should I be using pull up resistors (22k, 4.7K, 2.2k)?

[mackrackit]

You will need to turn the analog off.
The two links below should help. For now, after you read the one from Melanie, use the one from Darrel.
http://www.picbasic.co.uk/forum/showthread.php?t=561
http://www.picbasic.co.uk/forum/cont...54-All-Digital

And if you could post all of your code and how the configs are set might also be helpful.

[MangoKid]

Thanks again i will check the links and do what I can. as far as the code goes all of the code i have is written above.

[mackrackit]

Lets back up a bit. We normally start with a blinky program. If you have already done this then great, if not....

The configs will need set for the hardware. This can be done int the *.inc file found in the PBP directory or in code space. This link tell about it.
http://www.picbasic.co.uk/forum/showthread.php?t=543
Being that you are starting, start using MPASM for the assembler. It will save you trouble later.

Start with the 16F877A.
By default the OSC in the *.inc is set for XT. This is fine if you have a crystal attached, if you have a resonator change it to HS.
Now for the code,

'16F877A
DEFINE OSC 4 ' This tells PBP how fast the chip is running.

'This line is the configs MPASAM style
'Comment it out if the configs are set in the *.inc
@ __config _HS_OSC & _WDT_OFF & _LVP_OFF & _CP_OFF &_BODEN_OFF

ADCON1=%00000111 ' Turns off the ADC
CMCON=%00000111  'Turns off the Comparators
TRISA = %00000000  ' Makes all pins on PORTA outputs

'Set up some variables.
LED  VAR PORTA.1  'Attach a LED to PORTA pin 1

RUN:  Make the LED blink at 1 sec on and 1 sec off
HIGH LED
PAUSE 1000
LOW LED
PAUSE 1000
GOTO RUN
END

The above will help you determine if the chip is running correctly.

Do the same for the 12F683.
The PBP default is internal OSC and the chip defaults to 4 MHz. So you should be good as long as PBP is told about it.
DEFINE OSC 4
In you code like we did for the 877A.

Get everything blinking as it should and then tackle the serial part.

[Darrel Taylor]

Your flowpin is on GPIO.3.

SERIN2 GPIO.1\GPIO.3, 3313, [DEC X]

Put the serial data on GPIO.3, and the flowpin on GPIO.1.
flowpin needs to be able to output.

And set GPIO.0 to OUTPUT for the LED.

OUTPUT GPIO.0

Don't forget to disable MCLR in the configuration.