Problems with 16F684

[luxornet]

Hi!
I made my own tacho-volt-therometer with about the same schematic:
http://www.vandi.ro/electronics/turo...metru_auto.htm
This page is in Romanian language but maybe you and others found it useful.

[fratello]

Thank You for link ; but with (almost) similar hardware as Yours, my schematic work fine. BUT ... I intend to use another configuration for LCD pins (for optimised PCB), based on "LCD_Any_pin" ! This is my problem !
I check many variants for these :

LCD_Lines  CON 2                    ' changed on 1, of course !!! 
LCD_DATAUS CON 50               ' Data delay time in us -- changed to 200 
LCD_COMMANDUS CON 2500     ' Command delay time in us -- changed to 5000

without results...

[fratello]

Maybe the .dsn file help to understand...

[Darrel Taylor]

fratello,

Can you post your code.
I don't get the error with your .DSN file using this code...

define OSC 4
TRISA= %00010000                           
TRISC= %10110000
'               
CMCON0  = %00000111      'Disable analog comparators.     
DEFINE ADC_BITS 10       ' 10 bit A/D Conversion
DEFINE ADC_CLOCK 3
DEFINE ADC_SAMPLEUS 50   ' 50 uS A/D sample time
VRCON  = %00000000       ' Disable Comparator Voltage Reference
ANSEL  = %10000000       ' Set pin (AN7) to analog input, the rest to digital
ADCON0 = %10011101       ' Set up A/D converter - Right Just., VDD REF., CH 7, ON
ADCON1 = %00110000       ' Set up A/D Converter clock source to internal RC
'                    
;----[ Change these to match your LCD ]--------------------------------------- 
LCD_DB4    VAR PORTA.2 
LCD_DB5    VAR PORTC.0 
LCD_DB6    VAR PORTC.1 
LCD_DB7    VAR PORTC.2 
LCD_RS     VAR PORTA.0 
LCD_E      VAR PORTA.1 
LCD_Lines  CON 2     ' # of Lines on LCD, 1 or 2 (Note: use 2 for 4 lines) 
LCD_DATAUS CON 50     ' Data delay time in us 
LCD_COMMANDUS CON 2500     ' Command delay time in us 
INCLUDE "LCD_AnyPin.pbp"
'
X VAR WORD
'
Main:
    X = X + 1
    LCDOUT $FE,$80,DEC X,"    "
GOTO Main

[fratello]

Mr.Darrel ! THANK YOU for watching my post ! It's such a nice surprise !
The rest of code it's in post #1 ; just the parts concerning 16F684 and "LCD_AnyPin" it's changed...

[Darrel Taylor]

I don't get any errors with the code from post#1.

Well, at least not with the LCD.
I think you still have some problems in the code working with the DS18B20 though.

[fratello]

It's strange ! Using hardware and code from post #1 (and #2) the things are OK, in Proteus and "in vivo" ; changing just the configuration of LCD pins the schematic dont work anymore...I will try to build the schematic and see what happens