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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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MPXM2010D 数据表(PDF) 9 Page - Freescale Semiconductor, Inc |
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MPXM2010D 数据表(HTML) 9 Page - Freescale Semiconductor, Inc |
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9 / 24 page  AN1950 Sensors Freescale Semiconductor 9 warm: brclr 1,porta,PB1 ;check for SEL brclr 2,porta,PB2 ;or for ENT bclr 4,porta ;otherwise bset 5,porta ;turn on "SEL" LED jsr del100ms ;delay bset 4,porta ;toggle LEDs bclr 5,porta ;"ENT" now on: means choice is SEL ***or*** ENT jsr del100ms ;delay and repeat until SEL or ENT bra warm PB1: inc RA ;***SEL*** toggles menu choices lda RA cmp #$02 ;menu choices are $00 and $01 bne PB1ok clr RA ;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 ;***ENT*** confirms menu choice bclr 5,porta ;LEDs off lda RA ;get menu choice bne skip00 jmp LEVEL ;do ===LEVEL=== if choice=$01 skip00: jmp UNITS ;do ===UNITS=== if choice=$00 ;__________________________________________________________ ;__________________________________________________________ CALIB: lda #$01 jsr lcdcmdo clr ram0 ldhx #msg05 ;===CALIB=== 2-point calibration jsr lcdstro ;Calibration current values lda N1 ;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 ;LEDs off when both SEL & ENT are released jsr del1s 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 no2: brclr 1,porta,do1st ;if SEL is pressed then do 1st point cal bra waitPB1 ;otherwise wait for SEL or ENT do1st: ldhx #msg05b ;1st point cal: show values jsr lcdstro 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 |
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