Hi to all !
I intend to build one milivoltmeter, using 12F675 & N3310 display.
I made this schematic and I wrote this code. But, once again :mad: !, I see nothing on display. Suggestions ?
Thanks in advance for every reply !
Printable View
Hi to all !
I intend to build one milivoltmeter, using 12F675 & N3310 display.
I made this schematic and I wrote this code. But, once again :mad: !, I see nothing on display. Suggestions ?
Thanks in advance for every reply !
I strongly hope you have powered your pic with 3.3 V and not with 5 V.Quote:
I made this schematic and I wrote this code. But, once again !, I see nothing on display. Suggestions ?
If you did, than there is a high possibility that the display is burned.
If you powered pic correctly then add to your circuit 2 pullup resistors (4.7 K)
from +3.3 to SDA and from +3.3 to SCL.
Add DEFINE I2C_HOLD 1 to your code.
Al.
Thanks for reply ! I powered PIC with 5V and display with 3V. I made the modiffications You sugest. Still nothing on display...
Working schematic and code. New suggestions are welcome !
why you don't write lcd test code first.... to see if lcd is working and to be shure connection and subrutines are ok. then when working, put in whole code....
I never used this type of pic, so i'm not shure for trisio i allwais used biger pic which ave trisa trisb and so, is your trisio keword correct ? another thing is; submit your code in visible format, many readers of forum have no time, to download looking and comment code when is not visible directly from site....
sorry for my horible english, i hope is at least funny :-)
My variant of voltmeter, for max. 50 Volts. Limit of text is 10000 characters. My code have 10570 characters. Open and read. All the best !
vedo che qua si puo proseguire anche in italiano :-), per me e stesso non scrivo benne ne italiano ne iglesse... siete italiani no ?
Better variant. Some minor modification. Enjoy !
Damn I *HATE* 12F with their different names on everything..
Have been trying to convert this code into some useful PIC, like 16F887 but with no success.. I realize that I fumbeling around in the darkness here.. but..
Crap, cannot post all the code in code-tags neither :P
link: http://www.repulsiv.se/pic/nokv10.bas
Connections are changed like you can see in the sourcecode:
D_C PORTB.0
SDIN PORTA.3
SCK PORTA.2
(Choosen to match the connection that I already had for a nokia LCD on another testrig)
Any thoughts of what I missed ? ..as I said, I already know I'm fumbeling in the dark ;)
Hola, antes que nada, gracias por el ejemplo, ya que se puede usar como base y o libreria para otros proyectos... Anoche me puse largo y tendido entender el programa y ver el error...
Tengo en mente hacer una mini fuente de poder (tipo variable por medio de PWM en segundo plano) y emplear el display para ver tension y corriente... ya tengo algo a medio camino, ahora me falta hacer el filtro y ver como hago el calculo para que segun la lectura de una entrada analoica, me genere una salida de 0 a 5Vcc...
Attachment 8074
Bueno, para no irme del tema. para modificar tu programa y que funcione, configura 1ero los puertos de esta manera:
D_C var PORTB.0
RST VAR PORTB.1
SCK var PORTB.2
SDIN var PORTB.3
SCE VAR PORTB.4
luego, en la seccion de control del display nokia3310, coloca esta seccion (corregi reset y sce):
Code:InicializaLCD:
D_C=1 ' Seleccionamos el registro de datos en RAM
SCE=1 ' Anulamos la seleccion del chip
pause 100 ' Hacemos una pausa de 100 ms
gosub Reset_LCD ' Reseteamos el LCD
return
Reset_LCD:
RST=0 ' Damos un pulso de reset durante 100 ms
pause 100
RST=1
SCE=0
RETURN
CursorHome:
SCK = 1
LcdReg = %10000000 ' cursor Home
call PrintCtrlLcd
LcdReg = %01000000 ' cursor Home
call PrintCtrlLcd
return
PrintChar:
offset = Char * 5
for a = 1 to 5
read offset, LcdReg
call PrintDataLcd
offset = offset + 1
next a
LcdReg = 0
call PrintDataLcd
return
PrintCtrlLcd: D_C = 0
PrintDataLcd:
for x = 1 to 8
SDIN = LcdReg.7
SCK = 1
LcdReg = LcdReg << 1
SCK = 0
next x
D_C = 1
return
LCD_Clear:
PosX=0:PosY=0:Gosub LCD_GotoXY
D_C = 1
FOR Chr=1 TO 252
LcdData=0:Gosub LCD_ByteOut
LcdData=0:Gosub LCD_ByteOut
next Chr
return
LCD_GotoXY:
D_C = 0
LcdData=%01000000 | PosY :Gosub LCD_ByteOut
LcdData=%10000000 | PosX :Gosub LCD_ByteOut
return
LCD_ByteOut:
SHIFTOUT SDIN,SCK,1,[LcdData]
return
Border_line:
'~~~~~~~~~~~~~~~~~ RAND 0
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000000 ' cursor Y
call PrintCtrlLcd
for y = 0 to 83
LOokup y, [$FF,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,_ ' UP-side "DIGITAL"
$01,$01,$01,$F9,$F9,$F9,$09,$09,$F9,$F9,$F1,$01,_
$01,$F9,$F9,$F9,$01,$01,$F1,$F9,$F9,$09,$09,$19,_
$19,$11,$01,$01,$F9,$F9,$F9,$01,$09,$09,$09,$F9,$F9,$F9,_
$09,$09,$09,$01,$F1,$F9,$F9,$09,$09,$F9,$F9,$F1,$01,$01,_
$F9,$F9,$F9,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,_
$01,$01,$01,$01,$01,$FF] ,LcdReg
call PrintDataLcd
next y
'~~~~~~~~~~~~~~~~~ RAND 1
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000001 ' cursor Y
call PrintCtrlLcd
for y = 0 to 83
LOokup y, [$FF,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,_ ' DOWN-side "DIGITAL"
$00,$00,$00,$1F,$1F,$1F,$10,$10,$1F,$1F,$0F,$00,$00,_
$1F,$1F,$1F,$00,$00,$0F,$1F,$1F,$10,$11,$1F,$1F,_
$0F,$00,$00,$1F,$1F,$1F,$00,$00,$00,$00,$1F,$1F,$1F,$00,_
$00,$00,$00,$1F,$1F,$1F,$01,$01,$1F,$1F,$1F,$00,$00,$1F,$1F,_
$1F,$10,$10,$10,$10,$00,$00,$00,$00,$00,$00,$00,_
$00,$00,$00,$00,$00,$FF] ,LcdReg
call PrintDataLcd
next y
'=================================== RAND 2
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000010 ' cursor Y
call PrintCtrlLcd
LOokup 0, [$FF] , LcdReg
call PrintDataLcd
LcdReg = %10000000 + 83 ' cursor X
call PrintCtrlLcd
LcdReg = %01000010 ' cursor Y
call PrintCtrlLcd
LOokup 0, [$FF] , LcdReg
call PrintDataLcd
'=================================== RAND 3
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000011 ' cursor Y
call PrintCtrlLcd
LOokup 0, [$FF] , LcdReg
call PrintDataLcd
LcdReg = %10000000 + 48 ' cursor X
call PrintCtrlLcd
LcdReg = %01000011 ' cursor Y
for y = 0 to 35
LOokup y, [$18,$38,$60,$60,$38,$18,_ ' "VOLT"
$00,$30,$78,$48,$78,$30,_
$00,$78,$78,$40,$40,_
$00,$08,$08,$78,$78,$08,$08,$00,_
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$FF] ,LcdReg
call PrintDataLcd
next y
'=================================== RAND 4
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000100 ' cursor Y
call PrintCtrlLcd
LOokup 0, [$FF] , LcdReg
call PrintDataLcd
LcdReg = %10000000 + 83 ' cursor X
call PrintCtrlLcd
LcdReg = %01000100 ' cursor Y
call PrintCtrlLcd
LOokup 0, [$FF] , LcdReg
call PrintDataLcd
'=================================== JOS
LcdReg = %10000000 ' cursor X
call PrintCtrlLcd
LcdReg = %01000101 ' cursor Y
call PrintCtrlLcd
for y = 0 to 83
LOokup y, [$FF,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$FF] ,LcdReg
call PrintDataLcd
next y
Return
'=======================================================================
End 'of program
respecto a la visualizacion de los caracteres, eso seria asi:
saludosCode:LcdReg = %10100000 + 17 ' cursor X
call PrintCtrlLcd
LcdReg = %01000010 +40 ' cursor Y
call PrintCtrlLcd
'~~~~~~~~~~~~~~~~~ now display results
Char = (VOLT dig 1)
call PrintChar
Char = (VOLT dig 0)
call PrintChar
Char = 12
call PrintChar
Char = (MV dig 0)
call PrintChar
;Char = (MV dig 1)
;call PrintChar
Char = 14
call PrintChar
'~~~~~~~~~~~~~~~~~ cursor display amp
LcdReg = %10100000 + 17 ' cursor X
call PrintCtrlLcd
LcdReg = %01000010 + 50 ' cursor Y
call PrintCtrlLcd
'~~~~~~~~~~~~~~~~~ now display results
Char = (amper dig 1)
call PrintChar
Char = (amper dig 0)
call PrintChar
Char = 12
call PrintChar
Char = (Ma dig 1)
call PrintChar
Char = 13
call PrintChar
Veamos si le gusta.... su voltimetro con un graficador de señal (no es un osciloscopio)
Let's see if you like .... your voltmeter with a graphing signal (not a oscilloscope)
Attachment 8077
no esta funcional el 100%, pero quizas entre todos le podramos dar un poco de forma... asi como esta, hasta 100Hz lee y grafica... Tambien faltaria corregir la lectura en caso de señales sinuidales (SEN-COS) asi no da falsas lecturas
100% is not work, but perhaps among all We could give him a little way ... as well as this, to 100Hz graph ... also read and correct reading would fail if sinuidales signals (SEN-COS) so no giving false readings
se que se puede optimizar aun mas, pero estoy parado en ver como puedo solucionar el tema de las lecturas que no son linealesCode:DEFINE OSC 4
;**************** ADC chanel setting ************************
DEFINE ADC_BITS 8
;******************* DEGISKENLER ********************
INTCON = 0
CMCON=7
ADCON1 = 0
;ADCON1=%10000010
TRISA=%00001111
TRISB=%00000000
TRISC=%00000000
PORTA=0
PORTB=0
PORTC=0
DEFINE LCD_DREG PORTC
DEFINE LCD_DBIT 4
DEFINE LCD_EREG PORTC
DEFINE LCD_EBIT 1
DEFINE LCD_RSREG PORTC
DEFINE LCD_RSBIT 0
DEFINE LCD_LINES 2
D_C var PORTB.0
RST VAR PORTB.1
SCK var PORTB.2
SDIN var PORTB.3
SCE VAR PORTB.4
'Variables usadas por las rutinas del LCD
ascii var byte
Grafico var byte
valor_a VAR BYTE
valor_b var word
LCD_f var word
Fuente var byte
Fuente1 var byte
lcd_chr var word
numero VAR WORD
dato var byte
PosX var byte
PosY var byte
X var BYTE
Y var byte
i var BYTE
j var BYTE
k var BYTE
n var byte
f var byte
z var BYTE 'No usar en otra parte, se usa en rutina "DibujaPunto"
Invertido var bit
canal_a var byte[70]
canal_b var byte[70]
a var byte
Offset var byte
HAM var word
HAM2 VAR WORD
X1 VAR WORD
DUTY VAR BYTE
Char var byte
VOLT VAR WORD
HVD var word
AMPER var word
MV VAR BYTE
MA VAR BYTE
DATA @0,$3E,$51,$49,$45,$3E,_ ';// 0
$00,$42,$7F,$40,$00,_ ';// 1
$42,$61,$51,$49,$46,_ ';// 2
$21,$41,$45,$4B,$31,_ ';// 3
$18,$14,$12,$7F,$10,_ ';// 4
$27,$45,$45,$45,$39,_ ';// 5
$3C,$4A,$49,$49,$30,_ ';// 6
$01,$71,$09,$05,$03,_ ';// 7
$36,$49,$49,$49,$36,_ ';// 8
$06,$49,$49,$29,$1E,_ ';// 9
$08,$08,$3E,$08,$08,_ ';// +
$08,$08,$08,$08,$08,_ ';// -
$00,$60,$60,$00,$00,_ ';// .
$7E,$11,$11,$11,$7E,_ ';// A
$1F,$20,$40,$20,$1F,_ ';// V
$7F,$09,$09,$09,$01 ';// F
Inicio:
X=0
Y=0
Pause 100 ' Hacemos una pausa de 100 ms para estabilizar todo
gosub InicializaLCD
gosub ConfiguraLCD
gosub borra_lcd
gosub cursor_origen
ciclo:
LCDOUT $FE,1
call Border_line
GOSUB F_VOLT
gosub Pantalla
gosub muestreo
gosub Pantalla
; GOSUB F_AMP
;pause 100
gosub borra_lcd
goto ciclo
F_VOLT
adcin 0 , valor_b
mv=(5*valor_b)*/255
volt=(5*valor_b)/255
mv=mv*10/2
LCDOUT $FE,$02,"VOLT =",DEC VOLT,",",DEC1 MV
gosub N3310
RETURN
;F_AMP: ;HESAPA:
; HVD=(HAM+1)*/250
; AMPER=HVD/100
; MA=HVD//100
; RETURN
N3310:
'~~~~~~~~~~~~~~~~~ cursor display volt
lcd_chr = %10100000 + 17 ' cursor X
call lCD_cmd
lcd_chr = %01000010 +40 ' cursor Y
call lCD_cmd
'~~~~~~~~~~~~~~~~~ now display results
char = (VOLT dig 1)
;call lcd_data
call PrintChar
char = (VOLT dig 0)
call PrintChar
;call lcd_data
char = 12
;call lcd_data
call PrintChar
char = (MV dig 0)
;call lcd_data
call PrintChar
;Char = (MV dig 1)
;call PrintChar
char = 14
call PrintChar
;call lcd_data
RETURN
'***************************************************************
'Rutina para muestreo y almacenamiento de medición en RAM.
'***************************************************************
Muestreo:
for i = 0 to 69
adcin 0, valor_a
canal_a[i]= valor_a/8
pause 20
next i
return
'***************************************************************
'Esta rutina muestra las dos señales en el LCD.
'***************************************************************
Pantalla:
x=0
for i = 0 to 69
y=canal_a[i] ;+5
gosub Dibujapunto
pause 1
x = x+1
next i
Return
'***************************************************************
'Esta rutina grafica un punto en la pantalla
'siguiendo coordenadas X,Y (X:0-83; y:0-47).
'***************************************************************
DibujaPunto:
if Y<=7 then
z=7-Y
dato = %00000001 << z
posy=5
endif
if Y>=8 AND Y<=15 then
z=15-Y
dato = %00000001 << z
posy=4
endif
if Y>=16 AND Y<=23 then
posy=3
z=23-Y
dato = %00000001 << z
endif
if Y>=24 and Y<=31 then
posy=2
z=31-Y
dato = %00000001 << z
endif
if Y>=32 AND Y<=39 then
posy=1
z=39-Y
dato = %00000001 << z
endif
if Y>=40 AND Y<=47 then
posy=0
z=47-Y
dato = %00000001 << z
endif
PosX = X
gosub cursor_xy
lcd_chr = dato
gosub lcd_data
return
'*******************************************************************************************
' RUTINAS GESTION LCD NOKIA 3310
'*******************************************************************************************
'-------------------------------------------------------------------------------------------
InicializaLCD:
D_C=1 ' Seleccionamos el registro de datos en RAM
SCE=1 ' Anulamos la seleccion del chip
;Pin_VCC=1 ' Damos alimentacion al LCD
pause 100 ' Hacemos una pausa de 100 ms
gosub Reset_LCD ' Reseteamos el LCD
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
ConfiguraLCD:
lcd_chr=%00100001 ' Chip Activo, Direccionamiento horizontal, uso de instrucciones extendidas
gosub lCD_cmd
lcd_chr=$B5 ' Configura el voltage de operacion del LCD (Contraste)
gosub lCD_cmd
lcd_chr=$13 ' Configura bias mux rate a 1:48
gosub lCD_cmd
lcd_chr=%00100000 ' Chip Activo, Direccionamiento horizontal,uso de instrucciones basicas
gosub lCD_cmd
gosub Segmentos_ON ' Configura el display (Todos los segmentos ON)
gosub Display_Normal ' Configura el display (modo Normal)
gosub direccionamiento_vertical
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Display_Blanco:
lcd_chr=%00001000 ' Display Blanco
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Display_Inverso:
lcd_chr=%00001101 ' Display Inverso
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Display_Normal:
lcd_chr=%00001100 ' Display Normal
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Segmentos_ON:
lcd_chr=%00001001 ' Segmentos ON
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Direccionamiento_Vertical:
lcd_chr=%00100010 ' Chip Activo, Direccionamiento Vertical,uso de instrucciones basicas
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Direccionamiento_Horizonal:
lcd_chr=%00100000 ' Chip Activo, Direccionamiento Vertical,uso de instrucciones basicas
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Borra_LCD:
gosub Cursor_Origen ' Colocamos el cursor en el origen
for LCD_f=0 to 503 ' Recorremos todas las posiciones del LCD colocando ceros
lcd_chr=0
gosub LCD_Data
next LCD_f
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Cursor_Origen:
lcd_chr=%01000000 ' Ponemos la direccion Y a 0 (01000yyy)
gosub lCD_cmd
lcd_chr=%10000000 ' Ponemos la direccion X a 0 (1xxxxxxx)
gosub lCD_cmd
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Cursor_XY:
lcd_chr=%10000000 | PosX
Gosub lCD_cmd ' Envia Posicion X
lcd_chr=%01000000 | PosY
Gosub lCD_cmd ' Envia Posicion Y
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Reset_LCD:
RST=0 ' Damos un pulso de reset durante 100 ms
pause 100
RST=1
return
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
lCD_cmd:
D_C=0 ' Seleccionamos el registro de comandos
goto Data_Out
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
LCD_Data:
D_C=1 ' Seleccionamos el registro de datos de RAM
if Invertido=1 then ' Comprobamos si se invierte el dato para la representacion
lcd_chr = lcd_chr ^ $FF
endif
goto Data_Out
'-------------------------------------------------------------------------------------------
'-------------------------------------------------------------------------------------------
Data_Out:
SCE=0 ' Seleccionamos el chip del LCD
SCK=0 ' Ponemos a cero la señal de reloj
shiftout SDIN,SCK,1,[lcd_chr\8] 'Enviamos los datos en modo SPI
SCE=1 ' Deseleccionamos el chip para liberar el bus
return
'-------------------------------------------------------------------------------------------
PrintChar:
;dato = %00000001
offset = char * 5
for a = 1 to 5
;lcd_chr=char
read offset, lcd_chr
call LCD_Data
offset = offset + 1
next a
lcd_chr=char
;lcd_chr = 0
call LCD_Data
return
'-------------------------------------------------------------------------------------------
Border_line:
'~~~~~~~~~~~~~~~~~ RAND 0
lcd_chr = %10000000 ' cursor X
call lCD_cmd
lcd_chr = %01000000 ' cursor Y
call lCD_cmd
for y = 0 to 83
LOokup y, [$FF,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,_ ' UP-side "DIGITAL"
$01,$01,$01,$F9,$F9,$F9,$09,$09,$F9,$F9,$F1,$01,_
$01,$F9,$F9,$F9,$01,$01,$F1,$F9,$F9,$09,$09,$19,_
$19,$11,$01,$01,$F9,$F9,$F9,$01,$09,$09,$09,$F9,$F9,$F9,_
$09,$09,$09,$01,$F1,$F9,$F9,$09,$09,$F9,$F9,$F1,$01,$01,_
$F9,$F9,$F9,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,_
$01,$01,$01,$01,$01,$FF] ,lcd_chr
call LCD_Data
next y
'~~~~~~~~~~~~~~~~~ RAND 1
lcd_chr = %10000000 ' cursor X
call lCD_cmd
lcd_chr = %01000001 ' cursor Y
call lCD_cmd
for y = 0 to 83
LOokup y, [$FF,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,_ ' DOWN-side "DIGITAL"
$00,$00,$00,$1F,$1F,$1F,$10,$10,$1F,$1F,$0F,$00,$00,_
$1F,$1F,$1F,$00,$00,$0F,$1F,$1F,$10,$11,$1F,$1F,_
$0F,$00,$00,$1F,$1F,$1F,$00,$00,$00,$00,$1F,$1F,$1F,$00,_
$00,$00,$00,$1F,$1F,$1F,$01,$01,$1F,$1F,$1F,$00,$00,$1F,$1F,_
$1F,$10,$10,$10,$10,$00,$00,$00,$00,$00,$00,$00,_
$00,$00,$00,$00,$00,$FF] ,lcd_chr
call LCD_Data
next y
'=================================== RAND 2
lcd_chr = %10000000 ' cursor X
call lCD_cmd
lcd_chr = %01000010 ' cursor Y
call lCD_cmd
LOokup 0, [$FF] , lcd_chr
call LCD_Data
lcd_chr = %10000000 + 83 ' cursor X
call lCD_cmd
lcd_chr = %01000010 ' cursor Y
call lCD_cmd
LOokup 0, [$FF] , lcd_chr
call LCD_Data
'=================================== RAND 3
'=================================== RAND 4
lcd_chr = %10000000 ' cursor X
call lCD_cmd
lcd_chr = %01000100 ' cursor Y
call lCD_cmd
LOokup 0, [$FF] , lcd_chr
call LCD_Data
lcd_chr = %10000000 + 83 ' cursor X
call lCD_cmd
lcd_chr = %01000100 ' cursor Y
call lCD_cmd
LOokup 0, [$FF] , lcd_chr
call LCD_Data
'=================================== JOS
lcd_chr = %10000000 ' cursor X
call lCD_cmd
lcd_chr = %01000101 ' cursor Y
call lCD_cmd
for y = 0 to 83
LOokup y, [$FF,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,$80,_
$80,$80,$80,$80,$80,$80,$80,$80,$FF] ,lcd_chr
call LCD_Data
next y
Return
'=======================================================================
END
which I can be further optimized, but I stand to see how I solve the issue of non-linear readings
:confused: