AN1447 datasheet(17/26 Pages) STMICROELECTRONICS

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4-MULTIPLEXED LCD WITH A STANDARD ST62

LCD_drv.st6

;

*********************************************************

;* Project

: 8*4 segment LCD software driver

;* Toolchain : ST6 toolchain for RIDE V 1.0.C

;* Target

: in theory, any ST62

;* Module

: LCD_drv.st6

;* Version

: V 0.1.2 - June 2001

;* Author

: T.B. Hong Kong Application

;

*********************************************************

;* Software LCD driver library:

- public and local variables

- constant tables

- driver subroutines

;

*********************************************************

$INCLUDE (LCD_drv.inc)

; Software LCD driver

;*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

; *-*-*-*-*- I/O configuration equates *-*-*-*-

;*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

; --- Port allocation ---

EXTERN DATA (DDR_com, DR_com, OR_com)

; LCD commons

EXTERN DATA (DDR_seg, DR_seg, OR_seg)

; LCD segments

EXTERN DATA (DR_com_2, DR_seg_2)

; LCD shadow registers

; --- Pin allocation ---

COM_MASK

EQU

0f0h

SEG_MASK

EQU

000h

SEG_SEL

EQU

0ffh

MIN0_SEL

EQU

003h

MIN1_SEL

EQU

00ch

HR0_SEL

EQU

030h

HR1_SEL

EQU

0c0h

ICON0_SEG

EQU

ICON1_SEG

EQU

ICON2_SEG

EQU

ICON3_SEG

EQU

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