LCD / PC question

[luminas]

I tried to connect my PIC to PC

LCD shows value exactly as the reading ( 0 to 255 ), but the terminal program shows a 2 bytes combination ( 0 / 0 to 255 / 255 )

For example : at reading 0, LCD shows 0 and terminal shows 0 0,
at reading 255, LCD shows 255 and terminal shows 255 255,

How to make both display the same reading - I want PC terminal displays the same reading as LCD (0 to 255 )? Thank you

main:
adcin 0,reading
lcdout $Fe,1,"   value:    "
LCDOUT $FE, $C0, dec reading
pause 50
hserout [reading]
pause 50
goto main

[Archangel]

Hi luminas,
is the variable "reading" a word, or byte variable ?

[Kamikaze47]

that "main" loop will continue looping, but each time the LCD will be cleared and the value re-written, however, the pc will just keep receiving a value each time, so you will get a whole heap of values spit out in your terminal.

[Archangel]

So try:

main:
adcin 0,reading
lcdout $Fe,1,"   value:    "
LCDOUT $FE, $C0, dec reading
pause 50
hserout [DEC reading,10] ' DECIMAL VALUE OF READING WITH LINEFEED
pause 50
goto main

PP 80:81 ver 2.47
PP 82:83 ver 2.5
Note: I only looked at Hserout code. . .

[luminas]

Thank you for yor comments,
Joe: adding DEC statement caused the value in Terminal program incorrect , it spits more character

This is my code, please check if there is something wrong with fuses or defines
I use 18F2550, 10mhz xtal with hs pll ( 40mhz)

ASM
        __CONFIG    _CONFIG1L, _PLLDIV_10_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_1_1L
        __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H
        __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _VREGEN_OFF_2L
        __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _MCLRE_ON_3H  & _CCP2MX_ON_3H
        __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L  & _DEBUG_OFF_4L
           
ENDASM

define OSC 40
DEFINE LCD_DREG PORTB     ' LCD data port
DEFINE LCD_DBIT 0         ' LCD data starting bit
DEFINE LCD_RSREG PORTB    ' LCD register select port
DEFINE LCD_RSBIT 4        ' LCD register select bit
DEFINE LCD_EREG PORTB     ' LCD enable port
DEFINE LCD_EBIT 5         ' LCD enable bit
DEFINE LCD_BITS 4         ' LCD data bus size
DEFINE LCD_LINES 2        ' Number lines on LCD
DEFINE LCD_COMMANDUS 1500 ' Command delay time in us
DEFINE LCD_DATAUS 44      ' Data delay time in us

DEFINE ADC_BITS 8               ' ADC resolution 8 bit
DEFINE ADC_CLOCK 3              ' 
DEFINE ADC_SAMPLEUS 50

define HSER_RCSTA 90H
DEFINE HSER_TXSTA 20H
DEFINE HSER_BAUD 9600
DEFINE HSER_SPBRG 25
DEFINE HSER_CLROERR 1

reading var byte


clear
porta = 0
portb = 0
portc = 0
TRISA = %00000001               ' Set PORTA to all input
TRISB = %00000000               ' Set PORTB to all output
TRISC = %00000000               ' Set PORTC.7 as input, other RC as output
ADCON1 = %00001110


LCDOUT $FE, 1  
pause 100


main:
adcin 0,reading
lcdout $Fe,1,"   Value    "
LCDOUT $FE, $C0, dec reading
pause 50
hserout [reading ]
pause 50
goto main

[luminas]

I just modified the program as follow:

main:

LCDOUT $FE, 1
for reading = 1 to 10
LCDOUT $FE, $C0, dec reading
hserout [reading ]
pause 500
next reading

LCD shows 1 to 10 sequence correctly, but the terminal program shows:
3
254
4
254
7
254
8
254
11
254
12
254
15
254
48
254
51
254
52
254

What is wrong ?