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Serial_Lcd.spin
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Serial_Lcd.spin
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''****************************************
''* Parallax Serial LCD Driver v1.2 *
''* Authors: Jon Williams, Jeff Martin *
''* Copyright (c) 2006 Parallax, Inc. *
''* See end of file for terms of use. *
''****************************************
''
'' Driver for Parallax Serial LCDs (#27976, #27977, #27979)
''
'' v1.2 - March 26, 2008 - Updated by Jeff Martin to conform to Propeller object initialization standards.
'' v1.1 - April 29, 2006 - Updated by Jon Williams for consistency.
''
''
'' Serial LCD Switch Settings for Baud rate
''
'' ┌─────────┐ ┌─────────┐ ┌─────────┐
'' │ O N │ │ O N │ │ O N │
'' │ ┌──┬──┐ │ │ ┌──┬──┐ │ │ ┌──┬──┐ │
'' │ │[]│ │ │ │ │ │[]│ │ │ │[]│[]│ │
'' │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
'' │ │ │[]│ │ │ │[]│ │ │ │ │ │ │ │
'' │ └──┴──┘ │ │ └──┴──┘ │ │ └──┴──┘ │
'' │ 1 2 │ │ 1 2 │ │ 1 2 │
'' └─────────┘ └─────────┘ └─────────┘
'' 2400 9600 19200
CON
LCD_BKSPC = $08 ' move cursor left
LCD_RT = $09 ' move cursor right
LCD_LF = $0A ' move cursor down 1 line
LCD_CLS = $0C ' clear LCD (follow with 5 ms delay)
LCD_CR = $0D ' move pos 0 of next line
LCD_BL_ON = $11 ' backlight on
LCD_BL_OFF = $12 ' backlight off
LCD_OFF = $15 ' LCD off
LCD_ON1 = $16 ' LCD on; cursor off, blink off
LCD_ON2 = $17 ' LCD on; cursor off, blink on
LCD_ON3 = $18 ' LCD on; cursor on, blink off
LCD_ON4 = $19 ' LCD on; cursor on, blink on
LCD_LINE0 = $80 ' move to line 1, column 0
LCD_LINE1 = $94 ' move to line 2, column 0
LCD_LINE2 = $A8 ' move to line 3, column 0
LCD_LINE3 = $BC ' move to line 4, column 0
#$F8, LCD_CC0, LCD_CC1, LCD_CC2, LCD_CC3
#$FC, LCD_CC4, LCD_CC5, LCD_CC6, LCD_CC7
VAR
long lcdLines, started
OBJ
serial : "Simple_Serial" ' bit-bang serial driver
PUB init(pin, baud, lines): okay
'' Qualifies pin, baud, and lines input
'' -- makes tx pin an output and sets up other values if valid
started~ ' clear started flag
if lookdown(pin : 0..27) ' qualify tx pin
if lookdown(baud : 2400, 9600, 19200) ' qualify baud rate setting
if lookdown(lines : 2, 4) ' qualify lcd size (lines)
if serial.init(-1, pin, baud) ' tx pin only, true mode
lcdLines := lines ' save lines size
started~~ ' mark started flag true
return started
PUB finalize
'' Finalizes serial object, disable LCD object
if started
serial.finalize
started~ ' set to false
PUB putc(txByte)
'' Transmit a byte
serial.tx(txByte)
PUB str(strAddr)
'' Transmit z-string at strAddr
serial.str(strAddr)
PUB cls
'' Clears LCD and moves cursor to home (0, 0) position
if started
putc(LCD_CLS)
waitcnt(clkfreq / 200 + cnt) ' 5 ms delay
PUB home
'' Moves cursor to 0, 0
if started
putc(LCD_LINE0)
PUB gotoxy(col, line) | pos
'' Moves cursor to col/line
if started
if lcdLines == 2 ' check lcd size
if lookdown(line : 0..1) ' qualify line input
if lookdown(col : 0..15) ' qualify column input
putc(LinePos[line] + col) ' move to target position
else
if lookdown(line : 0..3)
if lookdown(col : 0..19)
putc(LinePos[line] + col)
PUB clrln(line)
'' Clears line
if started
if lcdLines == 2 ' check lcd size
if lookdown(line : 0..1) ' qualify line input
putc(LinePos[line]) ' move to that line
repeat 16
putc(32) ' clear line with spaces
putc(LinePos[line]) ' return to start of line
else
if lookdown(line : 0..3)
putc(LinePos[line])
repeat 20
putc(32)
putc(LinePos[line])
PUB cursor(type)
'' Selects cursor type
'' 0 : cursor off, blink off
'' 1 : cursor off, blink on
'' 2 : cursor on, blink off
'' 3 : cursor on, blink on
if started
case type
0..3 : putc(DispMode[type]) ' get mode from table
other : putc(LCD_ON3) ' use serial lcd power-up default
PUB displayOff
'' Blank the display (without clearing)
if started
putc(LCD_OFF)
PUB displayOn
'' Restore the display (with cursor hidden)
if started
cursor(0)
PUB custom(char, chrDataAddr)
'' Installs custom character map
'' -- chrDataAddr is address of 8-byte character definition array
if started
if lookdown(char : 0..7) ' make sure char in range
putc(LCD_CC0 + char) ' write character code
repeat 8
putc(byte[chrDataAddr++]) ' write character data
PUB backLight(status)
'' Enable (true) or disable (false) LCD backlight
'' -- works only with backlight-enabled displays
if started
status := status <> 0 ' promote non-zero to -1
if status
putc(LCD_BL_ON)
else
putc(LCD_BL_OFF)
else
status := false
return status
DAT
LinePos byte LCD_LINE0, LCD_LINE1, LCD_LINE2, LCD_LINE3
DispMode byte LCD_ON1, LCD_ON2, LCD_ON3, LCD_ON4
{{
┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ TERMS OF USE: MIT License │
├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation │
│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, │
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│ │
│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
│ │
│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE │
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└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
}}