*********************************************** * MOR Byte Definition * *********************************************** org MOR fcb $20

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1 * PULSE_V2.ASM - Pulse Generator * * Version * * Real-Time version * * Problems: * * 1- wrong timing cause step > 1 for value * * encoder * * 2- Delay initialize to 0002 with InitDelay * * 3- PB3 not used * * * * using Bourns Encoders * * cleaned up CLK routine, added Power On Msg * * LCD 2 lines - 16 charac. * * MOR Byte Definition * org MOR fcb $20 $BASE 10T ; decimal base * RAM Variables Declaration **************** org ram temp rmb 1 atemp rmb 1 Cfine rmb 1 ; coarse(1)/fine(0) & unit advance flag param rmb 1 ; Param=Clk Per(0,first), Out2 Del(11,last) uflag rmb 1 ; value(0)/units(ffh) flag O12flag rmb 1 ; Out1/Out 2 flag chgflag rmb 1 ; parameter changed flag MSB rmb 1 LSB rmb 1 Units rmb 1 ; tempo units var : 0=us, 1=ms, 2=sec unittens rmb 1 ; tempo paramlo var HunThous rmb 1 ; " paramhi var clkperlo rmb 1 ; ex. ClkPer=3102 unittens=02,hunthous=31 clkperhi rmb 1 ; clkperlo=02,clkperhi=31 clkunit rmb 2 ; Clk unit: 0=us, 1=ms, 2=sec Out1Perlo rmb 1 Out1Perhi rmb 1 ; Variables clkper to Out2Del are listed in the Out1Punit rmb 2 ; same order as displayed on LCD, so can use Out1Widlo rmb 1 ; param value as offset to access variables Out1Widhi rmb 1 ; starting at clkperlo Out1Wunit rmb 2 Out1Dello rmb 1 Out1Delhi rmb 1 Out2Perlo rmb 1 Out2Perhi rmb 1 Out2Punit rmb 2 Out2Widlo rmb 1 Out2Widhi rmb 1 Out2Wunit rmb 2 Out2Dello rmb 1 Out2Delhi rmb 1 DelayFlag rmb 1 ; at start init delay to 2 (0), don't (1) * Program in ROM **************** org rom Page 1

2 start sei clra sta porta sta portb lda #$FF sta ddra lda #$1b sta ddrb bset 4,portb ; Disable interrupt during setup ; zero out po a,b ; define PORT A as output ; reg A to Data Direction Register B ; make PB0,1,3,4 outputs ; PortB ; $1b = ; PB0 is LCD RS, 9513 A0 ; PB1 is LCD Enable ; PB2 is VALUE Encoder OUT#2 ; PB3 is unused ; PB4 is WR output ; PB5 is PARAMETER Encoder Common & ; Coarse/fine Unit adv. switch ; -IRQ is VALUE Encoder OUT#1 ; PA0 drives PARAMETER Encoder OUT#2 ; PA1 drives PARAMETER Encoder OUT#1 ; PA2 drives Coarse/fine unit adv switch ; raise the WR line ; Diactive 9513 from the bus, now ; can access LCD jsr lcd_init ; initialize LCD jsr lcd_clr ; and clear it ldx #112 s ; Power on message lda #255 ; debug value is 1 x1: jsr lcd_dlay ; delay 6 ms deca ; leave up for approx 1 sec bne x1 ; (255 * 6 ms = 1.5 sec) jsr InitScreen jsr ClrVars lda #$82 sta ISCR sta chgflag cli ; place ' CLOCK PER. ' message up ; Reset all variables ; enable IRQ and reset flag ; ISCR (IRQ Status/Control Reg) ; bit 7=1 Clear IRQ interrupt & IRQF flag ; set change flag so values displayed ; enable interrupts ******************* * OPERATE LOOP * ******************* Loop: lda DelayFlag ; Delay initialized? bne L1A jsr InitDelay ; Init delay Out1,Out2 to 0002 at start L1A: jsr GetSwitches ; If parameter, choose & display message ; Check also C/F toggle & Unit switch lda chgflag ; chgflag value changed by Param or Value ; service Request routines beq loop ; loop if no change lda #$40 ; $40=address 1st character, 2nd line jsr lcd_movcurs ; go to line 2 to change value lda uflag ; Display Value(0) or Unit($FF) beq L1 jsr DispUnits ; Display unit if unit parameter bra L2 ; Or Page 2

3 L1: jsr DispBCD2 ; Display value if value parameter L2: lda #$4F ; $4F=address 16rd character, 2nd line jsr lcd_movcurs ; Go to cursor position to change C of F lda cfine beq L3 lda #'C' ; Display C for Coarse bra L4 L3: lda #'F' ; Display F for Fine L4: sei ; disable param advance interupts til 9513 loaded jsr Init9513 jsr set9513 clr chgflag cli bra loop ; 9513 Software reset et init. ; Set Timer 5 to produce Clock square wave output ; Set Timers 1,2 to produce Per,Width,Del Out1 ; Set Timers 3,4 to produce Per,Width,Del Out2 ; Reset chgflag ; re-enable interrupt DispUnits: lda Units beq DU1 cmp #1 beq DU2 lda #'s' lda #'e' lda #'c' bra DU4 ; Display SEC unit DU1: lda #'u' ; Display us unit lda #'s' DU3: lda #' ' DU4: lda #' ' DU2: lda #'m' ; Display ms unit lda #'s' bra DU3 * * Init Delay Out1 & 2 to 0001 at start * * InitDelay: lda #2 ; Set value to 2 sta Out1Dello sta Out2Dello sei jsr Init9513 jsr set9513 cli inc DelayFlag ; disable param advance interupts til 9513 loaded ; 9513 Software reset et init. ; Set 9513 registers ; re-enable interrupt ; Set once Delay Init is done ;********** ; Display 4 digits * Page 3

4 ; ENTRY: 4 BCD values in UnitTens,HunThous * ;********** DispBCD2 ; First, display MSB of HunThous lda HunThous ;ex: A=HunThous=$72 lsra ;Logical shift right A register lsra ;This bring Value MSB to LSB position to add lsra ;$30 to it to access 0-9 character set lsra ;ex: A=$07, we loose LSB value 2 BCD ;A=$07+$30=$37, display = 7XXX ; Then, display LSB of HunThous lda HunThous ; Mask MSB to have only LSB in A and #$0f ; ex: A=$72 AND $0F=02 BCD ;A=$02+$30=$32, display = 72XX lda UnitTens lsra lsra lsra lsra BCD lda UnitTens and #$0f BCD ********************************************** * Parameter encoder & C/F/Unit switch * * service routine. Value encoder is read * * by interrupt, see QuadISR routine * * * * JSR DispMess before leaving * * if C/F Switch --> ChgFlag= #3 on exit * * param unit is set correctly and * * C/F is toggle if requested * ********************************************** GetSwitches: lda #1 sta porta brclr 5,portb,GS4 GS0: ; Active CCW side with PA0=1 ; PARAMETER encoder #1 switch is open ; read COM pin on PB5 ; PARAM encoder being moved lda #2 ; Active CW side with PA1=1 sta porta brclr 5,portb,GS2 ; Counter clockwise motion ; increment the parameter lda param ; Param=Clk Per(0), Out2 Del(11) inca cmp #12 ; Last param = 11+1 = 12 bne GS0 deca sta param jsr DispMess ; stop at last parameter GS1 lda #7 sta porta GS3: brset 5,portb,GS3 ; wait til PARAM encoder stopped & ; coarse/fineswitch released jsr lcd_dlay ; 6 ms debounce GS2: ; decrement the parameter lda param Page 4

5 GS7: deca cmp #$ff bne GS7 clra sta param jsr DispMess bra GS1 GS4: lda #4 ; Check C/F Switch with PA2 sta porta brclr 5,portb,GS3 ; no switched depressed, then exit ; Coarse Fine Toggle/ units advance button pressed lda #3 sta chgflag lda uflag beq GS5 ; Units parameter so advance to next unit lda #3 inc units ; units: 0=us, 1=ms, 2=sec, last=3 cmp units bne GS6 clr units ; Variables ClkPerLo to Out2Dello are listed in RAM in the same order they ; are displayed on LCD. param = display order, so can be used ; as indexed offset to access and store the correct unit GS6: ldx param lslx ; each param is 2 bytes, shift left = 2X lda units ; to jump 2 bytes sta ClkPerLo,x ; store unit: start from ClkPerLo + offset bra GS1 ; ex: Out1Wunit: param=5=0101-lsl->1010=offset 10 ; sta at ClkPerLo+10 --> pointe Out1Wunit ; offset are: Clk(+2) Out1Per(+6) Out1W(+10) ; Out2Per(+16), Out2W(+20) ; value parameter so toggle coarse/fine flag GS5: lda Cfine coma and #1 sta Cfine bra GS1 DispMess: lda #3 sta chgflag clra sta O12flag jsr lcd_movcurs lda param cmp #7 blo PA0 ; Clock or OUT 1 params sub #5 sta temp ; point to proper message for OUT#1 lda #1 sta O12flag ; Out 2 lda temp PA0: ldx #16 mul tax s lda O12flag beq PA4 Page 5

6 lda #3 jsr lcd_movcurs lda #'2' PA4: lda param cmp #1 beq PA5 cmp #3 beq PA5 cmp #5 ; Units parameters?? beq PA5 cmp #8 beq PA5 cmp #10 beq PA5 ; param is a value so load UnitTens,HunThous from Timer BCD vars clr Uflag ;uflag=0 --> value lda #1 sta cfine ; set up for coarse adj to start ldx param lslx ; each par is 2 bytes lda ClkPerLo,x sta UnitTens lda ClkPerHi,x sta HunThous ; param is a unit so load unit var from Timer vars PA5: clr Uflag dec Uflag ldx param lslx ; each par is 2 bytes ( though only 1 needed for units) lda ClkPerLo,x sta Units InitScreen: clra jsr lcd_movcurs clrx s ***** * VALUE Encoder Interrupt Service Request * ***** QuadISR: lda #3 sta chgflag brset 2,portb,QuadUp ; jsr lcd_wait ; 0.3 ms PB2 debounce delay ; jsr lcd_dlay ; 6 ms debounce QuadDown: lda cfine ; Coarse (1) or Fine (0) bne Q1 jsr decr ; Decr Fine bra Quadexit Q1: jsr D3A ; Decr Coarse bra Quadexit Page 6

7 QuadUp: ;jsr lcd_wait ; 0.3 ms PB2 debounce delay ;jsr lcd_dlay ; 6 ms debounce lda cfine bne Q2 jsr incr ; Incr Fine bra Quadexit Q2: jsr I3A ; Incr Coarse QuadExit: lda uflag bne R2 R1: ; Store displayed BCD value to proper variable ldx param ; use param as index to access proper var. lslx ; each param is 2 bytes (LSL = X2) lda UnitTens sta ClkPerLo,x ;ClkPerLo=Start offset for param UnitTens lda HunThous sta ClkPerHi,x ;ClkPerHi=Start offset for param UnitThous R2: bil R2 bset 1,iscr rti Incr: inc UnitTens lda UnitTens and #$0f cmp #10 beq I2 I2: lda UnitTens and #$f0 add #$10 sta UnitTens cmp #$A0 beq I3 I3: clr UnitTens I3A: inc HunThous lda HunThous and #$0f cmp #10 beq I4 I4: lda HunThous and #$f0 add #$10 sta HunThous cmp #$A0 beq I5 I5: clr HunThous ; Mask out upper nibble Decr: dec UnitTens lda UnitTens cmp #$ff beq D3 and #$0f cmp #$0f beq D2 Page 7

8 D2: lda UnitTens and #$f0 add #$09 sta UnitTens D3: lda #$99 sta UnitTens D3A: dec HunThous lda HunThous cmp #$ff beq d5 and #$0f cmp #$0f beq D4 D4: lda HunThous and #$f0 add #$09 sta HunThous D5: lda #$99 sta HunThous *************************** * Clear all Variables * *************************** ClrVars: lda #50 ;50 RAM locations to reset from top sta temp ;Save nb of location to erase in temp clrx ;Reset X offset clra ;Put A=0 in RAM to reset variable CV1 sta Atemp,x ;Start to erase from Atemp then to the following incx ;byte at location of Atemp+X offset dec temp bne CV1 inc cfine ; set C/F to Coarse ; temp=0 when leaving ***** * LCD routines * ***** *Function names - lcd_clr Clears display - no regs used * - lcd_init Initializes LCD device- MUST be invoked first * - lcd_write Writes char in A at current cursor position * Cursor auto increment * - lwritec Send command to LCD lcd_init ; delay to allow LCD panel to "Wake up" lda #100 ; debug value is 1 li1: jsr lcd_dlay ; delay 6 ms deca bne li1 *********** LCD Functions Setup ******************** lda #$38 jsr lwritec jsr lcd_dlay ;LCD Function Set ;8 bits, dual line ;Delay 6 ms Page 8

9 jsr lcd_dlay lda #$0E jsr lwritec jsr lcd_dlay ;Display On/Off ;Active Display & Cursor lcd_clr lda #$01 ;Command Display Clear jsr lwritec ;Exec time 1.64 ms jsr lcd_dlay lcd_movcurs ; Move cursor to address in A add #$80 ; bit7=1 LCD RAM address mode jsr lwritec ; bit6-0, address, 1st line 00-0Fh ; 2nd line 40-4Fh lcd_wait sta temp lda #$60 ; debug value is 2 lcdw1 deca ; delay= 96*6*0.5us=0.3ms bne lcdw1 lda temp lcd_writebcd ; Write BCD cause numbers are 0-9=BCD code add #$30 ; LCD character set is access in two nibbles bra lcd_write ; 1st must be $3 to access number 0-9 ; so value to display + $30 = 3 + number ; ex: to display 2, A=$02+$30=$32 ************************************ * 6ms delay * ************************************ lcd_dlay sta temp ; Save A into temp lda #8 ; debug value is 1 sta atemp ; 8 *.768ms = ms lcdd0 clra ; correct line ;lcdd0 lda #2 ; debug lcdd1 deca ;0-FF, FF-FE, = 256 loops bne lcdd1 ;256*6* 1/2 us =.768ms dec atemp ;256 = A from 0 to 0 again bne lcdd0 ;6 = nb of cycle for the loop lda temp ;1/2 us = command clock period lwritec bclr 0,portb ; RS low bra ld1 lcd_write bset 0,portb ; RS high ld1: bclr 1,portb ; E low sta prta ; data out to porta bset 1,portb ; strobe ENABLE bclr 1,portb jsr lcd_wait lcd_writes ;Write line 1 of LCD with selected message z0: lda mess1,x ;X contains address of message beq z1 ;mess1 X=00 mess6 X=80 Page 9

10 ; incx ; bra z0 ; 4 48 z1: ; 5 64 *********************** * * * 9513 STC loading routines,see manual p * * for command codes * *********************** Init9513: ;Software Init, see 9513 manual p. 2-3 lda #$ff ; $FF = Reset software lda #$5f ; $5F = Load & arm all counters lda #$17 ; $17 = Point to Master Mode Register lda #$df ; $DF = Disarm all timers ****** load 9513 Master Mode Register **************** ; ; C A F 0 ; ; C = BCD Division, Disable incr., bus 8 bits, Fout ON ; A = Fout / 10 ; F = Fout source is F5 ; 0 = TOD disable, Compare 1 & 2 disabled ; lda #$f0 ; LSB lda #$ca ; MSB of 16 bits word LD9513Ctrl: sta porta bset 0,portb ; Set C/-D line, Select Control Port ; C = Control, D = Data bclr 4,portb ; strobe -WR line bset 4,portb ; Transfert bus data to selected location LD9513Data: sta porta bclr 0,portb ; Clr C/-D line bclr 4,portb ; strobe -WR line bset 4,portb ***************************************** * Load Div. by ratio for PERIOD * * Entry A is Data pointer index * * LSB,MSB are two packed * * BCD values to load into counter * ***************************************** SetPeriod: lda LSB lda MSB Page 10

11 ******************************************** * Timer 1,3 are Div by N Rate generator * * which produces the PERIOD of OUTPUT #1,2 * * Mode D, BCD down count,high TC pulse * * Entry A points to C1,C3 Mode Register * * X contains CountSource nibble * ******************************************** SetTimer13: lda #$31 txa ; Rep.count,BCD count Down, High TC pulse ; No gating,ris edge count,source per nibble in X ******************************************** * Timer 2,4 are Delay,Width generators * * for OUTPUTS #1,2 * Mode L, BCD down count,tc toggled * * Entry A points to C2,C4 Mode Register * * X contains CountSource nibble * ******************************************** SetTimer24: lda #$72 txa ; Rep.count,BCD count Down, TC toggled ; N gate,ris edge count,source per nibble in X ** * Set all 9513 registers * * Order of execution is: Set9513 * * jsr SetPeriod * * SetPeriod * * SetOut1 * * SetOut2 * * Set9513 * ** Set9513: ;First determine the CLOCK units ldx #$0b ; F1 clk source (default) lda clkunit beq SC3 ; leave F1 source intact cmp #1 beq SC2 ; units are seconds use F5 SC1: ldx #$0f bra SC3 ; units are millisecs use F4 SC2: ldx #$0e SC3: lda #$05 jsr LD9513ctrl ; point to Timer 5 Mode register lda #$32 ; Mode D,BCD, Down count,outputtoggled jsr LD9513data txa Page 11

12 jsr LD9513data lda clkunit cmp #2 bne SC4 lda clkperlo clr LSB bra SC5 ; No gating, Risedge count ; CLK Source according to value in X ; unit not seconds ; shift value by 100 as clk is sec/100 SC4 lda clkperlo sta LSB lda clkperhi SC5 lda #$0d ; point to Timer 5 Load Register jsr Setperiod ****************** * Set up OUT #1 (Timers 1 and 2 ) * ****************** SetOut1: ; first set Timer 1 for Period ldx #$0b lda Out1Punit beq SO3 ; leave F1 source intact cmp #1 beq SO2 ; units are seconds use F5 SO1: ldx #$0f bra SO3 ; units are millisecs use F4 SO2: ldx #$0e SO3: lda #1 ; point to Timer1 Mode reg. jsr SetTimer13 lda Out1Punit cmp #2 bne SO4 ; unit not seconds lda Out1Perlo ; shift value by 100 as clk is sec/100 clr LSB bra SO5 SO4 SO5 SP1: lda Out1Perlo sta LSB lda Out1Perhi lda #$09 ; point to Timer1 Load register jsr SetPeriod ; now set delay and width ldx #$cb lda Out1WUnit beq SP3 ; leave F1 source intact cmp #1 beq SP2 ; units are seconds use F5 ldx #$cf Page 12

13 bra SP3 ; units are millisecs use F4 SP2: ldx #$ce ; X contains CountSource nibble SP3: lda #2 ; point to Timer2 Mode reg. jsr SetTimer24 lda Out1Wunit cmp #2 bne SP4 ; unit not seconds lda Out1Widlo ; shift value by 100 as clk is sec/100 clr LSB bra SP5 SP4 SP5 lda Out1Widlo sta LSB lda Out1Widhi lda #$12 ; point to Timer2 Hold register jsr SetPeriod lda Out1Dello sta LSB lda Out1delhi lda #$0a ; point to Timer2 Load Register jsr SetPeriod lda #$43 ; load counters 1,2 jsr LD9513ctrl lda #$E2 ; clear the OUT 2 Toggle F-F jsr LD9513ctrl ****************** * Set up OUT #2 (Timers 3 and 4 ) * ****************** SetOut2: TO1: TO2: ; first set Timer 3 for Period ldx #$0b lda Out2Punit beq TO3 ; leave F1 source intact cmp #1 beq TO2 ; units are seconds use F5 ldx #$0f bra TO3 ; units are millisecs use F4 ldx #$0e bra TO3 ldx #$0b TO3: lda #3 ; point to Timer3 Mode reg. jsr SetTimer13 lda Out2Punit cmp #2 bne TO4 ; unit not seconds lda Out2Perlo ; shift value by 100 as clk is sec/100 clr LSB bra TO5 TO4 lda Out2Perlo sta LSB Page 13

14 TO5 lda Out2Perhi lda #$0B ; point to Timer3 Load register jsr SetPeriod ; now set delay and width ldx #$cb lda Out2WUnit beq TP3 ; leave F1 source intact cmp #1 beq TP2 ; units are seconds use F5 TP1: ldx #$cf bra TP3 ; units are millisecs use F4 TP2: ldx #$ce TP3: lda #4 ; point to Timer4 Mode reg. jsr SetTimer24 lda Out2Wunit cmp #2 bne TP4 ; unit not seconds lda Out2Widlo ; shift value by 100 as clk is sec/100 clr LSB bra TP5 TP4 TP5 lda Out2Widlo sta LSB lda Out2Widhi lda #$14 ; point to Timer4 Hold register jsr SetPeriod lda Out2Dello sta LSB lda Out2delhi lda #$0C ; point to Timer4 Load Register jsr SetPeriod lda #$5C ; load counters 3,4,5 jsr LD9513ctrl lda #$E4 ; clear the OUT 4 Toggle F-F jsr LD9513ctrl lda #$3f ; arm all timers ; Return from Set9513 routine * Messages * mess1: db 'Clk Per. Value ' mess2: db 'Clk Per. Units ' mess3: db 'Out1 Per. Value' mess4: db 'Out1 Per. Units' mess5: db 'Out1 Wid. Value' mess6: db 'Out1 Wid. Units' Page 14

15 mess7: db 'Out1 Del. Value' mess8: db 'Pro21 Ver 2.0 ' * Vectors Init. * org $7f8 dw start dw QuadISR dw start dw start ; Vectors starting address ; Timer vector ; External Interrupt Vector (Value Encoder) ; Software Interrupt Vector (SWI) ; RESET pin Interrupt Page 15