Cirrus-logic AN88 Manuel d'utilisateur télécharger pdf (Page 7)

AN88

AN88Rev2 7

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

;* Program Code

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

processor 16C84 ; Set Processor Type

org 0x00 ; Reset Vector

goto Main ; Start at Main

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

;* Routine - Main

;* Input - none

;* Output - none

;* This is the entry point to the program.

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

org 0x05

Main ; Start from Reset Vector

;******** Initialize System and Perform SELF OFFSET Calibration

CALL initialize ; Initialize the system

CALL calibrate ; Calibrate the ADC Offset

;******** Write to the GAIN Register

MOVLW 0x82 ; Prepare COMMANDBYTE

MOVWF COMMANDBYTE

MOVLW 0x80 ; Prepare HIGHBYTE

MOVWF HIGHBYTE

CLRF MIDBYTE ; Prepare MIDBYTE

CLRF LOWBYTE ; Prepare LOWBYTE

CALL write_register ; Write to Gain Register

;******** Read from the GAIN Register

MOVLW 0x92 ; Prepare COMMANDBYTE

MOVWF COMMANDBYTE

CALL read_register ; Read the Gain Register

;******** Perform Single Conversions

LOOP CALL convert ; Convert Analog input

goto LOOP ; Repeat Loop

;******** End MAIN

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Pas de commentaire

Cirrus-logic AN88 Manuel d'utilisateur Page 7