Parallax BS2p Plus Pack AppKit Manual de usuario

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 1

599 Menlo Drive, Suite 100

Rocklin, California 95765, USA

Office: (916) 624-8333

Fax: (916) 624-8003

General: [email protected]

Technical: [email protected]

Web Site: www.parallaxinc.com

Educational: www.stampsinclass.com

BS2p “Plus Pack” AppKit (#45184)

Introduction

The BS2p “Plus Pack” is a selection of components and ready-to-run source code to assist experimenters

with mastering some of the exciting new features of the BS2p; specifically the use of parallel LCDs,

Philips I2C™ components and Dallas Semiconductor 1-Wire® components.

Please note that this AppKit is designed for intermediate to advanced users. The schematics and source

code have been carefully checked and are commented, but the expectation is that the user will consult

the appropriate product data sheets (not duplicated here) for detailed explanation of each component’s

operation.

Each of the enclosed experiments was built, tested and run on the BS2p Demo Board (#45183). Should

you desire more space for connecting components, please consider the NX-1000 lab board (#28135).

Packing List

Verify that your BS2p “Plus Pack” package is complete in accordance with the list below. The contents of

the package include:

•Packing List (this page)

•Documentation/Source Code Diskette

•Parallel LCD module; 2 lines x 16 characters (HD44780-compatible)

•PCF8574 Remote 8-Bit I/O Expander

•PCF8583 Clock/Calendar with 240 x 8-Bit RAM

•PCF8591 8-Bit A/D and D/A Converter

•24LC32 32K Serial EEPROM

•(2) DS1822 Econo-MicoLAN Digital Thermometer

•DS2405 Addressable Switch

•DS2890 1-Wire Digital Potentiometer

•(4) Jumper wires packs

•220 ohm resistor

•(2) 1K resistor

•10K resistor

•100K potentiometer

•0.01 uF capacitor

•(2) low-current LED

•Normally-open pushbutton switch

•32.678 kHz crystal

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 2

PP_LCDDEMO1.BSP

•Connect LCD to the BS2p Demo Board X5

•Install jumper X6

•Adjust contrast pot for best display

' -----[ Title ]----------------------------------------------------------------

' BS2p Plus Pack

' File...... PP_LCDDEMO1.BSP

' Purpose... Basic LCD Demo -Single Line Mode

' Author.... Parallax, Inc.

' E-mail.... [email protected]

' Started...

' Updated... 26 SEP 2001

' {$STAMP BS2p}

' -----[ Program Description ]--------------------------------------------------

'This program demonstrates LCD basics using the BS2p.

' To run this program on the BS2p Demo Board, connect the LCD and install

' Jumper X6. Adjust contrast pot for best display.

' Refer to the Hitachi HD44780 documentation for details on LCD control.

' -----[ Revision History ]-----------------------------------------------------

' -----[ I/O Definitions ]------------------------------------------------------

LCDpin CON 0 ' connect LCD to OutL

' -----[ Constants ]------------------------------------------------------------

NoCmd CON $00 ' No command in LCDOUT

ClrLCD CON $01 ' clear the LCD

CrsrHm CON $02 ' move cursor to home position

CrsrLf CON $10 ' move cursor left

CrsrRt CON $14 ' move cursor right

DispLf CON $18 ' shift displayed chars left

DispRt CON $1C ' shift displayed chars right

DDRam CON $80 ' Display Data RAM control

DispCtrl CON %00001000 ' display control command

On CON 1

Off CON 0

' -----[ Variables ]------------------------------------------------------------

cmd VAR Byte ' command sent to LCD

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 3

display VAR cmd.Bit2 ' display on/off bit

cursor VAR cmd.Bit1 ' cursor on/off bit

blinking VAR cmd.Bit0 ' blinking on/off bit

char VAR cmd ' character sent to LCD

idx VAR Byte ' loop counter

' -----[ EEPROM Data ]----------------------------------------------------------

' -----[ Initialization ]-------------------------------------------------------

Initialize:

PAUSE 500 ' let the LCD settle

LCDCMD LCDpin,%00110000 : PAUSE 5 ' 8-bit mode

LCDCMD LCDpin,%00110000 : PAUSE 0

LCDCMD LCDpin,%00100000 : PAUSE 0 ' 4-bit mode

LCDCMD LCDpin,%00001100 : PAUSE 0 ' no crsr, no blink

LCDCMD LCDpin,%00000110 ' inc crsr, no disp shift

' -----[ Main Code ]------------------------------------------------------------

Main:

LCDCMD LCDpin,ClrLCD ' clear display

PAUSE 500

Splash_Screen

LCDOUT LCDpin,NoCmd,["THE BASIC STAMP!"]

PAUSE 2000

Cursor_On:

LCDCMD LCDpin,CrsrHm ' move the cursor home

cmd = DispCtrl

display = On

cursor = On

LCDCMD LCDpin,cmd

PAUSE 500

Move_Cursor:

FOR idx = 1 TO 15 ' move the cursor across display

LCDCMD LCDpin,CrsrRt

PAUSE 150

FOR idx = 14 TO 0 ' go backward by moving cursor

cmd = DDRam + idx ' to a specific address

LCDCMD LCDpin,cmd

PAUSE 150

PAUSE 1000

Block_Cursor:

cmd = DispCtrl

display = On

blinking = On ' enable block cursor

LCDCMD LCDpin,cmd

PAUSE 2000

blinking = Off ' turn it off

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 4

LCDCMD LCDpin,cmd

Flash_Display:

cmd = DispCtrl

display = On

FOR idx = 1 TO 10 ' flash display by

display = ~display ' toggling display bit

LCDCMD LCDpin,cmd

PAUSE 250

PAUSE 1000

Shift_Display:

FOR idx = 1 TO 16 ' shift display to right

LCDCMD LCDpin,DispRt

PAUSE 100

PAUSE 1000

FOR idx = 1 TO 16 ' shift display back

LCDCMD LCDpin,DispLf

PAUSE 100

PAUSE 1000

GOTO Main ' do it all over

END

' -----[ Subroutines ]----------------------------------------------------------

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 5

PP_LCDDEMO2.BSP

•Connect LCD to the BS2p Demo Board X5

•Install jumper X6

•Adjust contrast pot for best display

' -----[ Title ]----------------------------------------------------------------

' BS2p Plus Pack

' File...... PP_LCDDEMO2.BSP

' Purpose... Basic LCD Demo -Multi-line mode with custom characters

' Author.... Parallax, Inc.

' E-mail.... [email protected]

' Started...

' Updated... 26 SEP 2001

' {$STAMP BS2p}

' -----[ Program Description ]--------------------------------------------------

' This program demonstrates the use of the multi-line initialization and

' the use of custom characters. When using the standard 5x7 font, the LCD

' will hold up to eight customer characters.

' To run this program on the BS2p Demo Board, connect the LCD and install

' Jumper X6. Adjust contrast pot for best display.

' Refer to the Hitachi HD44780 documentation for details on LCD control.

' -----[ Revision History ]-----------------------------------------------------

' -----[ I/O Definitions ]------------------------------------------------------

LCDpin CON 0 ' connect LCD to OutL

' -----[ Constants ]------------------------------------------------------------

NoCmd CON $00 ' No command in LCDOUT

ClrLCD CON $01 ' clear the LCD

CrsrHm CON $02 ' move cursor to home position

CrsrLf CON $10 ' move cursor left

CrsrRt CON $14 ' move cursor right

DispLf CON $18 ' shift displayed chars left

DispRt CON $1C ' shift displayed chars right

DDRam CON $80 ' Display Data RAM control

CGRam CON $40 ' Custom character RAM

Line1 CON $80 ' DDRAM address of line 1

Line2 CON $C0 ' DDRAM address of line 2

' -----[ Variables ]------------------------------------------------------------

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 6

cmd VAR Byte ' commnand sent to LCD

char VAR Byte ' character sent to LCD

newChr VAR Byte ' new character for animation

addr VAR Byte ' address in EE and display

cNum VAR Byte ' character number

' -----[ EEPROM Data ]----------------------------------------------------------

' custom character definitions

Mouth0 DATA $0E,$1F,$1F,$1F,$1F,$1F,$0E,$00

Mouth1 DATA $0E,$1F,$1F,$18,$1F,$1F,$0E,$00

Mouth2 DATA $0E,$1F,$1C,$18,$1C,$1F,$0E,$00

Smile DATA $00,$0A,$0A,$00,$11,$0E,$06,$00

Msg DATA " IS VERY COOL! ",3 ' revealed message

' -----[ Initialization ]-------------------------------------------------------

Initialize:

PAUSE 500 ' let the LCD settle

LCDCMD LCDpin,%00110000 : PAUSE 5 ' 8-bit mode

LCDCMD LCDpin,%00110000 : PAUSE 0

LCDCMD LCDpin,%00100000 : PAUSE 0 ' 4-bit mode

LCDCMD LCDpin,%00101000 : PAUSE 0 ' 2-line mode

LCDCMD LCDpin,%00001100 : PAUSE 0 ' no crsr, no blink

LCDCMD LCDpin,%00000110 ' inc crsr, no disp shift

DLChars: ' download custom chars to LCD

LCDCMD LCDpin,CGRam ' prepare to write CG data

FOR addr = Mouth0 TO (Smile + 7) ' build 4 custom chars

READ addr,char ' get byte from EEPROM

LCDOUT LCDpin,NoCmd,[char] ' put into LCD CGRAM

' -----[ Main Code ]------------------------------------------------------------

Main:

LCDCMD LCDpin,ClrLCD

PAUSE 1000

LCDOUT LCDpin,NoCmd,["THE BASIC STAMP"]

PAUSE 2000

' Animation by character replacement

FOR addr = 0 TO 15 ' cover 16 characters

READ (Msg + addr),newChr ' get new char from message

cmd = Line2 + addr ' set new DDRAM address

FOR cNum = 0 TO 4 ' 5 characters in cycle

LOOKUP cNum,[2,1,0,1,newChr],char

LCDOUT LCDpin,cmd,[char] ' write animation character

PAUSE 100 ' delay between animation chars

PAUSE 3000

GOTO Main ' do it all over

END

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 7

' -----[ Subroutines ]----------------------------------------------------------

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 8

PP_LCDFONT.BSP

•Connect LCD to the BS2p Demo Board X5

•Install jumper X6

•Adjust contrast pot for best display

' -----[ Title ]----------------------------------------------------------------

' BS2p Plus Pack

' File...... PP_LCDCFONT.BSP

' Purpose... Advanced LCD Demo -custom numeric font(s)

' Author.... Parallax, Inc.

' E-mail.... [email protected]

' Started...

' Updated... 26 SEP 2001

' {$STAMP BS2p}

' -----[ Program Description ]--------------------------------------------------

' This program demonstrates character definition replacement in order to create

' a custom font for numbers. This program creates three custom characters that

' are used to display the tens, ones and tenths value of a counter.

' The program analyzes the counter and updates the screen by downloading the

' appropriate character map for each digit.

' To run this program on the BS2p Demo Board, connect the LCD and install

' Jumper X6. Adjust contrast pot for best display.

' Refer to the Hitachi HD44780 documentation for details on LCD control.

' -----[ Revision History ]-----------------------------------------------------

' -----[ I/O Definitions ]------------------------------------------------------

LCDpin CON 0 ' connect LCD to OutL

' -----[ Constants ]------------------------------------------------------------

NoCmd CON $00 ' No command in LCDOUT

ClrLCD CON $01 ' clear the LCD

CrsrHm CON $02 ' move cursor to home position

CrsrLf CON $10 ' move cursor left

CrsrRt CON $14 ' move cursor right

DispLf CON $18 ' shift displayed chars left

DispRt CON $1C ' shift displayed chars right

DDRam CON $80 ' Display Data RAM control

CGRam CON $40 ' Custom character RAM

Line1 CON $80 ' DDRAM address of line 1

Line2 CON $C0 ' DDRAM address of line 2

CLines CON 8 ' lines per character

Space CON 10

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 9

' -----[ Variables ]------------------------------------------------------------

char VAR Byte ' character sent to LCD

addr VAR Byte ' EE starting address of map

cNum VAR Nib ' character number

idx VAR Nib ' loop counter

counter VAR Word

' -----[ EEPROM Data ]----------------------------------------------------------

' character definitions -digits 0 -9 and space

Dig_0 DATA $1F,$11,$11,$19,$19,$19,$1F,$00

Dig_1 DATA $04,$04,$04,$0C,$0C,$0C,$0C,$00

Dig_2 DATA $1F,$01,$01,$1F,$18,$18,$1F,$00

Dig_3 DATA $1E,$02,$02,$1F,$03,$03,$1F,$00

Dig_4 DATA $18,$18,$18,$19,$1F,$01,$01,$00

Dig_5 DATA $1F,$18,$18,$1F,$01,$01,$1F,$00

Dig_6 DATA $18,$10,$10,$1F,$19,$19,$1F,$00

Dig_7 DATA $1F,$11,$01,$03,$03,$03,$03,$00

Dig_8 DATA $0E,$0A,$0A,$1F,$13,$13,$1F,$00

Dig_9 DATA $1F,$11,$11,$1F,$03,$03,$03,$00

Dig_Spc DATA $00,$00,$00,$00,$00,$00,$00,$00

' -----[ Initialization ]-------------------------------------------------------

Initialize:

PAUSE 500 ' let the LCD settle

LCDCMD LCDpin,%00110000 : PAUSE 5 ' 8-bit mode

LCDCMD LCDpin,%00110000 : PAUSE 0

LCDCMD LCDpin,%00100000 : PAUSE 0 ' 4-bit mode

LCDCMD LCDpin,%00101000 : PAUSE 0 ' 2-line mode

LCDCMD LCDpin,%00001100 : PAUSE 0 ' no crsr, no blink

LCDCMD LCDpin,%00000110 ' inc crsr, no disp shift

FOR cNum = 0 TO 2 ' initialize cust chars

LOOKUP cNum,[Dig_0,Dig_0,Dig_Spc],addr

GOSUB Update_CC

' -----[ Main Code ]------------------------------------------------------------

Main:

LCDOUT LCDpin,ClrLCD,["CUSTOM DIGITS"] ' setup display

LCDOUT LCDpin,(Line2 + 12),[2,1,".",0]

Show_Counter:

FOR counter = 0 TO 999 ' count in tenths 0 -99.9

FOR cNum = 0 TO 2

addr = counter DIG cNum ' get a digit

IF (cNum < 2) OR (addr > 0) THEN DigitOK

addr = Space ' leading space if < 10

DigitOK:

addr = addr * CLines ' calculate map for this digit

GOSUB Update_CC ' download to LCD

Parallax, Inc. • BS2p “Plus Pack” (#45184) • 10/2001 Page 10

PAUSE 100

GOTO Main

END

' -----[ Subroutines ]----------------------------------------------------------

Update_CC: ' update custom character

LCDCMD LCDpin,(CGRam + (cNum * CLines)) ' point to character map

FOR idx = 0 TO (CLines - 1)

READ (addr + idx),char ' get data for character line

LCDOUT LCDpin,NoCmd,[char] ' write to LCD CGRAM

RETURN

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