LCD problem with HSerReceive

[Jvan]

chip PIC16f1847 at 8 MZ
Program receives input from 433Mz transmitter.
When received data is displayed via rs232 to PC using PUTTY everything is OK.
When received data is displayed on LCD data seems to have extra 1 bit at db6.
Example; what should be 6 displays as v and what should be 5 displays as u.
Also locate does not put character on correct line or column.
Checked LCD with same program without any serial code and it works ok.

I am a newb but all my projects have worked up till now.

[Anobium]

Welcome.

1) Please try adding this to your code and test. This emulates the LCD command set on your Putty terminal. If all is good, then revert your code by remove these methods, then proceed to step two then three. Let us know the results.

 #define locate ANSI_rev
 #define CLS ANSIERASECREEN
 #define print hserprint

' Position cursor on Terminal
Sub ANSI ( IN xpos, IN ypos )
    HSerSend 27
    HSerPrint "["
    HSerPrint ypos
    HSerSend 59
    HSerPrint xpos
    HSerPrint "H"
End Sub

' Position cursor on Terminal
Sub ANSI_rev ( IN ypos, IN xpos )
    ypos++
    HSerSend 27
    HSerPrint "["
    HSerPrint ypos
    HSerSend 59
    HSerPrint xpos
    HSerPrint "H"
End Sub


' Eraase Terminal
Sub ANSIERASECREEN
    HSerSend 27
    HSerPrint "["
    HSerPrint "2"
    HSerPrint "J"
    Ansi ( 0, 0 )

    HSerSend 27
    HSerPrint "["
    HSerPrint "?"
    HSerPrint "25"
    HSerPrint "l"



end Sub
~~~~

2)  Add or change the following parameters, but, LCD_SPEED SLOW is the default if nothing is specified.

LCD_SPEED FAST
LCD_SPEED MEDIUM
LCD_SPEED SLOW
~~~

3) Use the LAT configuration for the LCD screen See the bottom of this page: http://gcbasic.sourceforge.net/help/relevantconstantslcd.htm

[Jvan]

Hi

New to posting on forum. Not sure how to Reply. Hope this works.

Ran Code suggested. Got Garbage on PUTTY screen.

Will try LCD_SPEED and LAT next.

[Jvan]

OK; Tried LAT and SPEED Slow and Fast. Same problem. I'm beginning to wonder if the problem may be that serial in is being used without a serial out. Serial out not needed because the data is input from the serial receiver(wireless) and the only output I need is the data that is received to display on the LCD.

Any thoughts ?

P.S. I really appreciate GCBASIC and the forums. Thanks to all involved.

[Jvan]

Problem Solved
Turns out that serout port needs to be declared and on a viable TX pin even though this port is not used for output.

[Anobium]

May I ask you to post your code please. I am puzzled... in a good way. 😃

[Jvan]

Here is the code.

[Anobium]

If it works then great. :-)