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MPXM2102AS Datasheet(PDF) 548 Page - Motorola, Inc |
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MPXM2102AS Datasheet(HTML) 548 Page - Motorola, Inc |
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548 / 670 page  AN1950 3–402 Motorola Sensor Device Data www.motorola.com/semiconductors RB ds 1 RA ds 1 P0C ds 1 P0B ds 1 P0A ds 1 NPTR ds 1 ramfree ds 80 ;used both for running RAM version of wrflash & storing 40 readings ;__________________________________________________________ ;__________________________________________________________ org rom cold: rsp jsr ALLINIT ;general initialization jsr WARMUP ;give LCD extra time to initialize brset 1,porta,nocalib brset 2,porta,nocalib jmp CALIB ;do calibration if SEL & ENT at reset nocalib: ldhx #msg01 ;otherwise skip and show welcome messages jsr lcdstro ;”Reference Design” msg jsr del1s ldhx #msg01a ;”Water Level” msg jsr lcdstro jsr del1s MENU: ldhx #msg01b jsr lcdstro clr RA ;menu choice=0 to begin with lda #$0D jsr lcdcmdo ;blink cursor on menu choice luke: ldx RA ;get current menu choice clrh lda menupos,x ;and look up corresponding LCD address jsr lcdcmdo warm: brclr 1,porta,PB1 ;wait for SEL brclr 2,porta,PB2 ;or for ENT bclr 4,porta bset 5,porta ;toggle LEDs jsr del100ms ;delay bset 4,porta bclr 5,porta ;toggle again: 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 blt PB1ok cmp #$03 bgt menureset ; shift up and display 3 MENU2: ldhx #msg01c jsr lcdstro menureset: 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 cmpa #$00 bne skip00 jmp LEVEL ;do ===LEVEL=== if choice=$00 skip00: cmpa #$01 bne skip01 jmp UNITS ;do ===UNITS=== if choice=$01 skip01: cmpa #$02 bne skip02 ;do ==MANCALIB= if choice=$02 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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