SNAD01C

8-CHANNEL 8-BIT ADC

9. EXAMPLE PROGRAMS

Host Controller: SNC500. Application circuit is identical to Figure11. P22: START. P21:

CLK. P20: DIO.

Macro Programs: (def.h)

♦

p2State

equ

m0

port_l

equ

m1

port_h

equ

m2

ad_out_l

equ

m3

ad_out_h

equ

m4

tmp

equ

m5

tmp1

equ

m6

ad_hh

equ

m7

;;********************************

@ON_START macro

;;SET START=0

mov

a

#1011b

and

a

p2state

mov

p2state a

mov

p2

a

endm

;;********************************

@OFF_START macro

;;SET START=1

mov

a

#0100b

or

a

p2state

mov

p2state a

mov

p2

a

endm

;;********************************

@CLOCK macro

mov

a

#0010b

;;SET CLK L

H AND H

L

or

a

p2state

mov

p2

a

mov

a

#1101b

and

a

p2state

mov

p2state a

mov

p2

a

endm

;;********************************

@Send_0 macro

mov

a

#1110b

;;HOST SEND 0

DIO

and

a

p2state

mov

p2state a

mov

p2

a

endm

;;********************************

@Send_1 macro

mov

a

#0001b

;;HOST SEND 1

DIO

or

a

p2state

mov

p2state a

mov

p2

a

endm

;;********************************

;HOST SEND 1-BIT CONSTANT (#1 OR #0)

DIO

mov

tmp

data

mov

a

#1110b

and

a

p2state

or

a

tmp

mov

p2state a

mov

p2

a

endm

Version: 1.5

July 31, 2003

16

;;********************************