module NOKIA_LCD_18
' Written by ANTON RIECKERT
' riecktron@tuks.co.za
' PORTC,0 - CS - Chip Enable
' PORTC,1 - RES - Reset Input
' PORTC,4 - SCLK - Serial Clock Input
' PORTC,5 - DC - Data / Command
' PORTC,6 - SDA - Serial Data Input
' 6x8 Font Table
const font1 as byte[460] =
(0x00, 0x00, 0x00, 0x00, 0x00 , ' space
0x00, 0x00, 0x2f, 0x00, 0x00 , ' !
0x00, 0x07, 0x00, 0x07, 0x00 , ' "
0x14, 0x7f, 0x14, 0x7f, 0x14 , ' #
0x24, 0x2a, 0x7f, 0x2a, 0x12 , ' $
0x62, 0x64, 0x08, 0x13, 0x23 , ' %
0x36, 0x49, 0x55, 0x22, 0x50 , ' &
0x00, 0x05, 0x03, 0x00, 0x00 , ' '
0x00, 0x1c, 0x22, 0x41, 0x00 , ' (
0x00, 0x41, 0x22, 0x1c, 0x00 , ' )
0x14, 0x08, 0x3E, 0x08, 0x14 , ' *
0x08, 0x08, 0x3E, 0x08, 0x08 , ' +
0x00, 0x00, 0xA0, 0x60, 0x00 , ' ,
0x08, 0x08, 0x08, 0x08, 0x08 , ' -
0x00, 0x60, 0x60, 0x00, 0x00 , ' .
0x20, 0x10, 0x08, 0x04, 0x02 , ' /
0x3E, 0x51, 0x49, 0x45, 0x3E , ' 0
0x00, 0x42, 0x7F, 0x40, 0x00 , ' 1
0x42, 0x61, 0x51, 0x49, 0x46 , ' 2
0x21, 0x41, 0x45, 0x4B, 0x31 , ' 3
0x18, 0x14, 0x12, 0x7F, 0x10 , ' 4
0x27, 0x45, 0x45, 0x45, 0x39 , ' 5
0x3C, 0x4A, 0x49, 0x49, 0x30 , ' 6
0x01, 0x71, 0x09, 0x05, 0x03 , ' 7
0x36, 0x49, 0x49, 0x49, 0x36 , ' 8
0x06, 0x49, 0x49, 0x29, 0x1E , ' 9
0x00, 0x36, 0x36, 0x00, 0x00 , ' :
0x00, 0x56, 0x36, 0x00, 0x00 , '
0x08, 0x14, 0x22, 0x41, 0x00 , ' <
0x14, 0x14, 0x14, 0x14, 0x14 , ' =
0x00, 0x41, 0x22, 0x14, 0x08 , ' >
0x02, 0x01, 0x51, 0x09, 0x06 , ' ?
0x32, 0x49, 0x59, 0x51, 0x3E , ' @
0x7C, 0x12, 0x11, 0x12, 0x7C , ' A
0x7F, 0x49, 0x49, 0x49, 0x36 , ' B
0x3E, 0x41, 0x41, 0x41, 0x22 , ' C
0x7F, 0x41, 0x41, 0x22, 0x1C , ' D
0x7F, 0x49, 0x49, 0x49, 0x41 , ' E
0x7F, 0x09, 0x09, 0x09, 0x01 , ' F
0x3E, 0x41, 0x49, 0x49, 0x7A , ' G
0x7F, 0x08, 0x08, 0x08, 0x7F , ' H
0x00, 0x41, 0x7F, 0x41, 0x00 , ' I
0x20, 0x40, 0x41, 0x3F, 0x01 , ' J
0x7F, 0x08, 0x14, 0x22, 0x41 , ' K
0x7F, 0x40, 0x40, 0x40, 0x40 , ' L
0x7F, 0x02, 0x0C, 0x02, 0x7F , ' M
0x7F, 0x04, 0x08, 0x10, 0x7F , ' N
0x3E, 0x41, 0x41, 0x41, 0x3E , ' O
0x7F, 0x09, 0x09, 0x09, 0x06 , ' P
0x3E, 0x41, 0x51, 0x21, 0x5E , ' Q
0x7F, 0x09, 0x19, 0x29, 0x46 , ' R
0x46, 0x49, 0x49, 0x49, 0x31 , ' S
0x01, 0x01, 0x7F, 0x01, 0x01 , ' T
0x3F, 0x40, 0x40, 0x40, 0x3F , ' U
0x1F, 0x20, 0x40, 0x20, 0x1F , ' V
0x3F, 0x40, 0x38, 0x40, 0x3F , ' W
0x63, 0x14, 0x08, 0x14, 0x63 , ' X
0x07, 0x08, 0x70, 0x08, 0x07 , ' Y
0x61, 0x51, 0x49, 0x45, 0x43 , ' Z
0x00, 0x7F, 0x41, 0x41, 0x00 , ' [
0x55, 0x2A, 0x55, 0x2A, 0x55 , ' /
0x00, 0x41, 0x41, 0x7F, 0x00 , ' ]
0x04, 0x02, 0x01, 0x02, 0x04 , ' ^
0x40, 0x40, 0x40, 0x40, 0x40 , ' _
0x00, 0x01, 0x02, 0x04, 0x00 , ' '
0x20, 0x54, 0x54, 0x54, 0x78 , ' a
0x7F, 0x48, 0x44, 0x44, 0x38 , ' b
0x38, 0x44, 0x44, 0x44, 0x20 , ' c
0x38, 0x44, 0x44, 0x48, 0x7F , ' d
0x38, 0x54, 0x54, 0x54, 0x18 , ' e
0x08, 0x7E, 0x09, 0x01, 0x02 , ' f
0x18, 0xA4, 0xA4, 0xA4, 0x7C , ' g
0x7F, 0x08, 0x04, 0x04, 0x78 , ' h
0x00, 0x44, 0x7D, 0x40, 0x00 , ' i
0x40, 0x80, 0x84, 0x7D, 0x00 , ' j
0x7F, 0x10, 0x28, 0x44, 0x00 , ' k
0x00, 0x41, 0x7F, 0x40, 0x00 , ' l
0x7C, 0x04, 0x18, 0x04, 0x78 , ' m
0x7C, 0x08, 0x04, 0x04, 0x78 , ' n
0x38, 0x44, 0x44, 0x44, 0x38 , ' o
0xFC, 0x24, 0x24, 0x24, 0x18 , ' p
0x18, 0x24, 0x24, 0x18, 0xFC , ' q
0x7C, 0x08, 0x04, 0x04, 0x08 , ' r
0x48, 0x54, 0x54, 0x54, 0x20 , ' s
0x04, 0x3F, 0x44, 0x40, 0x20 , ' t
0x3C, 0x40, 0x40, 0x20, 0x7C , ' u
0x1C, 0x20, 0x40, 0x20, 0x1C , ' v
0x3C, 0x40, 0x30, 0x40, 0x3C , ' w
0x44, 0x28, 0x10, 0x28, 0x44 , ' x
0x1C, 0xA0, 0xA0, 0xA0, 0x7C , ' y
0x44, 0x64, 0x54, 0x4C, 0x44 , ' z
0x14, 0x14, 0x14, 0x14, 0x14) ' horiz lines
sub procedure NOK_Write (dim data as byte, dim mode as byte)
dim i as short
' Pull DC high for DATA or low for COMMAND
If TestBit(mode,0) = 1 then
SetBit(PortC,5)
end if
If TestBit(mode,0) = 0 then
ClearBit(PortC,5)
end if
ClearBit(PortC,0) ' CS = low
' Clock in 8 bits of data - Highst bit first
for i = 7 to 0 step -1
ClearBit(PortC,4) ' SCLK = low
If TestBit(Data,i) = 0 then
ClearBit(PortC,6) ' SDA = low
else
SetBit(PortC,6) ' SDA = high
end if
SetBit(PortC,4) ' SCLK = high
next i
SetBit(PortC,0) ' CS = high
end sub
' Draws a character on screen at current possition
sub procedure NOK_Chr(dim symlcd as byte)
dim l as byte
dim m as word
NOK_Write(0x00,1) ' Space between characters
for l = 1 to 5
m = (symlcd - 32)
m = m * 5
m = m + l
m = m - 1
NOK_Write(Font1[m],1)
next l
end sub
' Set the current position for data (0<= x <= 84, 0<= y <= 5)
sub procedure NOK_GotoXY(dim x as byte, dim y as byte)
dim n as byte
dim o as byte
n = x
o = y
SetBit(n,7)
SetBit(o,6)
NOK_Write (o,0)
NOK_Write (n,0)
end sub
' Inverts Display - Here is still a bug. It only inverst once and doesn't
' want to invert back again
sub procedure NOK_Invert
NOK_Write(0x0D,0)
end sub
' Clear the LCD Data memory
sub procedure NOK_Clear
dim p as byte
dim q as byte
dim r as byte
ClearBit(PortC,6) ' SDA = low - Data bit is low
SetBit(PortC,5) ' DC = high - Data mode
ClearBit(PortC,0) ' CS = low - Chip Enable
for p = 1 to 6 ' for 6 rows
for q = 1 to 84 ' for 84 colums
for r = 1 to 8 ' for 8 loop (8 bits)
ClearBit(PortC,4) ' SCLK = low - Serial Clock Input
SetBit(PortC,4) ' SCLK = high - Serial Clock Input
next r
next q
next p
end sub
' Writes a string at x, y position (maks 14 char per row) (0 <= x <= 84 , 0 <= y <= 5)
sub procedure NOK_Out(dim x as byte, dim y as byte, dim byref sentance as char[14])
dim v as byte
NOK_GotoXY(x,y)
for v = 0 to length(sentance)
NOK_Chr(sentance[v])
next v
end sub
' LCD Initialization
sub procedure NOK_Init
' Set initial status of LCD pins
ClearBit(PortC,4) ' SCLK = low
ClearBit(PortC,6) ' SDA = low
ClearBit(PortC,5) ' DC = low
ClearBit(PortC,0) ' CS = low
ClearBit(PortC,1) ' RES = low
' Toggle LCD reset
Delay_ms(20)
ClearBit(PortC,1) ' RES = low
Delay_ms(500)
SetBit(PortC,1) ' RES = high
SetBit(PortC,0) ' CS = high
NOK_Write(0x21,0) ' Extended commands
NOK_Write(0xc5,0) ' LCD Vop
NOK_Write(0x06,0) ' Temp coef
NOK_Write(0x13,0) ' LCD Bias 1:48
NOK_Write(0x20,0) ' Standard commands
NOK_Write(0x0c,0) ' Normal Mode
' Clear and position at top of LCD
NOK_Clear
NOK_GotoXY(0,0)
end sub
end.
