Fujitsu MB90390 Series Hardware Manual page 330

CHAPTER 18 8/10-BIT A/D CONVERTER
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Coding example
BAPL
BAPM
BAPH
ISCS
IOAL
IOAH
DCTL
DCTH
DDR6
ADER0
ICR10
ADCS0
ADCS1
ADCR0
ADCR1
;-----Main program---------------------------------------------------------------
START:
LOOP:
302
EQU 000100H
EQU 000101H
EQU 000102H
EQU 000103H
EQU 000104H
EQU 000105H
EQU 000106H
EQU 000107H
EQU 000016H
EQU 00000CH
EQU 0000BAH
EQU 000034H
EQU 000035H
EQU 000036H
EQU 000037H
CODE CSEG
AND CCR,#0BFH
MOV ICR10,#00H
MOV BAPL,#00H
MOV BAPM,#02H
MOV BAPH,#00H
MOV ISCS,#18H
MOV IOAL,#36H
MOV IOAH,#00H
MOV DCTL,#03H
MOV DDR6,#11110001B
MOV ADER0,#00001110B ;Sets P61/AN1 to P63/AN3 as analog inputs.
MOV CTH,#00H
MOV ADCS0,#0BH
MOV ADCS1,#0A2H
MOV ILM,#07H
OR CCR,#40H
MOV A,#00H
MOV A,#01H
BRA LOOP
;Lower buffer address pointer
;Intermediate buffer address pointer
;Upper buffer address pointer
2
;EI OS status register
;Lower I/O address register
;Upper I/O address register
;Lower data counter
;Upper data counter
;Port 6 direction register
;Analog input enable register
;Interrupt control register for A/D Converter
;A/D control status register
;
;A/D data register
;
;Assumes that the stack pointer (SP) has already
;been initialized.
;Disables interrupts.
;Interrupt level: 0 (highest priority)
;Sets the address to which the conversion data is
;transferred and stored.
;(Uses 200 to 205 .)
H H
;
;Transfers word data, adds 1 to the address,
; then transfers the data from I/O to memory.
;Sets the address of the analog data register as
;the transfer source address pointer.
2
;Sets the EI OS transfer count to three, which is
;the same value as the conversion count.
;Sets P61 to P63 as input.
;
;Single activation. Converts AN1 to AN3.
;Software activation. Begins A/D conversion.
;Enables interrupts.
;Sets ILM in PS to level 7.
;Enables interrupts.
;Endless loop