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IMPLEMENTATION OF SIGMA-DELTA ADC WITH ST7FLITE05/09

jrne inc_loop

inc Adc_h

jra inc_loop

set_Dlt:

bset PBDR,#Dlt_out

; U_ain1<037h

inc_loop:

bset FLAGS0,#m50us

; setting of a marker 50us

inc Loop_l

; increase of the samples counter

jrne tst_loop

inc Loop_h

tst_loop:

ld a,Loop_l

; is the samples counter equal to

; 1024?

jreq tst_loopH

iret

tst_loopH:

ld a,Loop_h

cp a,#$04

jreq ok_knw

; yes

iret

ok_knw:

clr Loop_l

; conversion completed

clr Loop_h

; initiating of the loop conversion

; counter

ld a,Adc_h

; rewriting of the result into

; Rez_h,Rez_l

ld Rez_h,a

ld a,Adc_l

ld Rez_l,a

clr Adc_l

; initiating of the conversion re-

; sult variable

clr Adc_h

bset FLAGS0,#Nw_adc

; marker for IDLE (data ready)

iret

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

spi_rt

iret

lttimrtc_rt

iret

ltimoutcmp_rt

iret

timoutcmp_rt

iret

lvd_rt

iret

ext3_rt

iret

ext2_rt

iret

ext1_rt

iret

ext0_rt

iret

sw_rt

iret

dummy

iret

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

;Procedures and subprograms

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