Datasheet > AN1950

AN1950

更新时间： 2022-12-20 04:38:19

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		监控
页数	文件大小	规格书
24页	298K
描述
Water Level Monitoring

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中文翻译

获取价格

数据手册

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AN1950 数据手册

warm: brclr 1,porta,PB1 ;check for SEL

brclr 2,porta,PB2 ;or for ENT

bclr 4,porta

bset 5,porta

jsr del100ms

bset 4,porta

bclr 5,porta

jsr del100ms

bra warm

;otherwise

;turn on "SEL" LED

;delay

;toggle LEDs

;"ENT" now on: means choice is SEL ***or*** ENT

;delay and repeat until SEL or ENT

PB1:

inc RA

lda RA

cmp #$02

bne PB1ok

clr RA

;***SEL*** toggles menu choices

;menu choices are $00 and $01

;back to $00 when all others have been offered

PB1ok: bclr 4,porta

bclr 5,porta

;LEDs off

jsr del100ms

;wait a little bit

brclr 1,porta,PB1ok ;make sure they let go of SEL

bra luke

PB2:

bclr 4,porta

bclr 5,porta

lda RA

;***ENT*** confirms menu choice

;LEDs off

;get menu choice

bne skip00

jmp LEVEL

skip00: jmp UNITS

;do ===LEVEL=== if choice=$01

;do ===UNITS=== if choice=$00

;__________________________________________________________

CALIB: lda #$01

jsr lcdcmdo

clr ram0

ldhx #msg05

jsr lcdstro

lda N1

;===CALIB=== 2-point calibration

;Calibration current values

;0mm

jsr lcdbyto

lda #'/'

jsr lcdchro

lda N2

;160mm

jsr lcdbyto

bset 4,porta

bset 5,porta

;LEDs on

lego1: brclr 1,porta,lego1

lego2: brclr 2,porta,lego2

bclr 4,porta

bclr 5,porta

jsr del1s

;LEDs off when both SEL & ENT are released

jsr del1s

;wait 2s

ldhx #msg05a

jsr lcdstro

;show instructions

waitPB1: brset 2,porta,no2 ;if ENT is not pressed, skip

jmp nocalib ;if ENT is pressed then cancel calibration

brclr 1,porta,do1st ;if SEL is pressed then do 1st point cal

no2:

bra waitPB1

do1st: ldhx #msg05b

jsr lcdstro

;otherwise wait for SEL or ENT

;1st point cal: show values

clr CNT

;CNT will count 256 A/D readings

clr RB

clr RA

;RB:RA will contain 16-bit add-up of those 256 values

AN1950

Sensors

Freescale Semiconductor

1...6 7 8910 11 12...24

中文翻译

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