MPXM2102AS datasheet(375/670 Pages) MOTOROLA

375 / 670 page

AN1305

3–229

Motorola Sensor Device Data

www.motorola.com/semiconductors

08EA A6 40

LDA

#$40

tcr = 0x40;

08EC B7 12

STA

$12

08EE 9A

CLI

CLI;

/* let the interrupts begin !

/* write CAL to the display */

08EF A6 CC

LDA

#$CC

portc = 0xcc; /* C */

08F1 B7 02

STA

$02

08F3 A6 BE

LDA

#$BE

portb = 0xbe; /* A */

08F5 B7 01

STA

$01

08F7 A6 C4

LDA

#$C4

porta = 0xc4; /* L */

08F9 B7 00

STA

$00

08FB AD A7

BSR

$08A4

adzero();

08FD 81

RTS

}

/**************************************************************************/

void cvt_bin_dec(unsigned long arg)

/* First converts the argument to a five digit decimal value. The msd is in

the lowest address. Then leading zero suppresses the value and writes it to

the display ports.

The argument value range is 0..65535 decimal. */

0069

{

08FE BF 69

STX

$69

0900 B7 6A

STA

$6A

006B

char i;

006C

unsigned long l;

0902 4F

CLRA

for ( i=0; i < 5; ++i )

0903 B7 6B

STA

$6B

0905 B6 6B

LDA

$6B

0907 A1 05

CMP

#$05

0909 24 07

BCC

$0912

{

090B 97

TAX

digit[i] = 0x0;

/* put blanks in all digit positions */

090C 6F 50

CLR

$50,X

}

090E 3C 6B

INC

$6B

0910 20 F3

BRA

$0905

0912 4F

CLRA

for ( i=0; i < 4; ++i )

0913 B7 6B

STA

$6B

0915 B6 6B

LDA

$6B

0917 A1 04

CMP

#$04

0919 24 70

BCC

$098B

{

091B 97

TAX

if ( arg

>= dectable [i] )

091C 58

LSLX

091D D6 08 0B

LDA

$080B,X

0920 B1 6A

CMP

$6A

0922 26 07

BNE

$092B

0924 D6 08 0A

LDA

$080A,X

0927 B1 69

CMP

$69

0929 27 5C

BEQ

$0987

{

092B BE 6B

LDX

$6B

l = dectable[i];

092D 58

LSLX

092E D6 08 0A

LDA

$080A,X

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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