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AN413

Examples of ST9 peripheral configurations

Doc ID 1875 Rev 2

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Appendix B

Examples of ST9 peripheral configurations

. sbttl “ ST9030 registers addresses and contents ”

. include “c:\st9\bin\symbols.inc”

; The reader should refer to the file containing the

; declaration of all the bits and registers of the ST9030

; for the symbols used in the following listing.

;

; .nlist

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

;* This program demonstrates the configuration of ST9 peripherals*

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

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

;*RAM Declaration*

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

prescal_t0 := r2

; Value of Timer 0 Prescaler

val_capt_t0 := rr4

; Value of Timer 0 Capture register

nb_event_t0 := rr4

; Number of Timer 0 event

lg_dma := rr6

; Length of DMA

CPT_AD_DMA := RR8

; DMA Address Register

CPT_LG_DMA := RR8

; DMA Counter Register

ad_conv := r3

; conversion start address

IT_T0_LEVEL = 4

; Timer 0 priority level

IT_CAD_LEVEL = 6

; A/D converter priority level

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

;*INTERRUPT VECTOR ADDRESSES*

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

CORE_IT_VECT := 00h

; Core interrupt vectors

T0_IT_VECT := 10h

; Timer 0 interrupt vectors

EXT_IT_VECT := 20h

; External interrupt vectors

ADC_IT_VECT := 30h

; A/D Converter interrupt vectors

SCI_IT := 40h

; SCI interrupt vector

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

;*STACK Declaration*

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

SSTACK := 223

; System stack address group D C

USTACK := 191

; User stack address group B

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

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