📄 main.dbg
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mPTASE_PTASE4: equ %00010000
mPTASE_PTASE5: equ %00100000
;*** NV_ICSTRM - Nonvolatile ICS Trim Register; 0x00003FFA ***
NV_ICSTRM: equ $00003FFA ;*** NV_ICSTRM - Nonvolatile ICS Trim Register; 0x00003FFA ***
; bit numbers for usage in BCLR, BSET, BRCLR and BRSET
NV_ICSTRM_TRIM: equ 0 ; ICS Trim Setting
; bit position masks
mNV_ICSTRM_TRIM: equ %11111111
;*** NV_FTRIM - Nonvolatile ICS Fine Trim Register; 0x00003FFB ***
NV_FTRIM: equ $00003FFB ;*** NV_FTRIM - Nonvolatile ICS Fine Trim Register; 0x00003FFB ***
; bit numbers for usage in BCLR, BSET, BRCLR and BRSET
NV_FTRIM_FTRIM: equ 0 ; ICS Fine Trim
; bit position masks
mNV_FTRIM_FTRIM: equ %00000001
;*** NVOPT - FLASH Options Register; 0x00003FFC ***
NVOPT: equ $00003FFC ;*** NVOPT - FLASH Options Register; 0x00003FFC ***
; bit numbers for usage in BCLR, BSET, BRCLR and BRSET
NVOPT_SECD: equ 0 ; Security State Code
; bit position masks
mNVOPT_SECD: equ %00000001
;***********************************************
;** D E P R E C I A T E D S Y M B O L S **
;***********************************************
XREF This_symb_has_been_depreciated
; EOF
; RAM/ROM definitions
; Watchdog feed macro
feed_watchdog: MACRO
MOV #HIGH_6_13(SRS),PAGESEL
STA MAP_ADDR_6(SRS) ; feed the watchdog
ENDM
; export symbols
XDEF _Startup
ABSENTRY _Startup
Table_Data EQU $3E00
; Variable declarations
ACMP_ENABLE SET $92
ACMP_DISABLED SET $20
MTIM_INIT SET $50
MTIM_ENABLE SET $40
MTIM_STOP_RESET SET $30
MTIM_128_DIV SET $07
FREE_RUN SET $00
DEBUG_MODE SET $00
RUN_MODE SET $01
MODE: EQU DEBUG_MODE
; variable/data section
ORG RAMStart
ConvertedValue: DS.B 1 ; This varible store converted value
SensorReading DS.B 1 ; store ACMP read value
pcBuffer: DS.B 2 ; temporal backup SPC
Temp_Page DS.B 1 ; Temporal backup Page
; code section
ORG ROMStart
;**************************************************************
;* MACRO DEFINITIONS *
;**************************************************************
ENTRY_SUB: MACRO ;Macro for "stacking" SPC
sha
sta pcBuffer + 2*(\1)
sha
sla
sta pcBuffer + 2*(\1) +1
sla
ENDM
NOP ;needs to separate MACROS
EXIT_SUB: MACRO ;Macro for restore SPC
sha
lda pcBuffer + 2*(\1)
sha
sla
lda pcBuffer + 2*(\1) +1
sla
ENDM
;**************************************************************
;* CONFIGURES SYSTEM CONTROL *
;**************************************************************
Init_mc:
clr ICSC1 ; FLL is selected as Bus Clock
mov #$98,ICSTRM ; Store TRIM value into ICSTRM register
clr ICSC2
mov #$4,ICSSC
IFNE MODE
ELSE
mov #HIGH_6_13(SOPT), PAGESEL
mov #$03, MAP_ADDR_6(SOPT) ; Disables COP, enables BKGD (PTA3) and RESET (PTA2) pins
ENDIF
rts
;**************************************************************
;* Analog Comparator Initial Configuration *
;**************************************************************
ACMP_Conf:
MOV #ACMP_ENABLE,ACMPSC ; ACMP Enabled, ACMP+ pin active, Interrupt enabled, Rising edges detections
rts
;**************************************************************
;* Modulus Timer Configuration for ADC *
;**************************************************************
MTIM_ADC_Init:
mov #MTIM_128_DIV,MTIMCLK ; Select bus clock as reference, Set prescaler with 64
mov #FREE_RUN,MTIMMOD ; Configure Timer as free running
mov #MTIM_STOP_RESET,MTIMSC
rts
;**************************************************************
;* Discharge Capacitor *
;**************************************************************
Discharge_Cap:
bset 1,PTADD ; Configure PTA1 as Output
bclr 1,PTAD ; Start Capacitor discharging
lda #$FE ; Set delay time
waste_time:
dbnza waste_time ; wait until Delay = 0
rts
;**************************************************************
;* MAIN *
;**************************************************************
_Startup:
bsr Init_mc
bsr MTIM_ADC_Init ; Configure MITM
bsr Discharge_Cap ; Discharge Capacitor
bsr ACMP_Conf ; Configure ACMP+ and ACMP-
mov #MTIM_ENABLE,MTIMSC ; Timer Counter Enabled
mainLoop:
wait ; Wait for ACMP interrupt
bset 1,MTIMSC
lda MTIMCNT
sta SensorReading ; store counter value
mov #HIGH_6_13(SIP1), PAGESEL
brset 3, MAP_ADDR_6(SIP1),ReadVal ; branch if ACMP interrupt arrives
bra mainLoop
;**************************************************************
;* Read Value from ACMP *
;**************************************************************
ReadVal:
mov #MTIM_STOP_RESET,MTIMSC ; Stop and reset counter
mov #ACMP_DISABLED, ACMPSC ; ACMP Disabled, Clear Interrupt flag
ENTRY_SUB 0
sha
sta pcBuffer + 2*(0)
sha
sla
sta pcBuffer + 2*(0) +1
sla
jsr LookupTable ; Search on table
EXIT_SUB 0
sha
lda pcBuffer + 2*(0)
sha
sla
lda pcBuffer + 2*(0) +1
sla
rts
;**************************************************************
;* Table Search *
;**************************************************************
LookupTable:
lda SensorReading
rola ; Getting 2 MSB
rola
rola
and #$03
add #(Table_Data>>6) ; Page Calculating
mov #PAGESEL,Temp_Page ; Backup actual page
sta PAGESEL ; Page Change
lda SensorReading
and #$3F ; Extract 6 LSB
add #$C0 ; Index to paging window
tax
lda ,x ; Load table result
sta ConvertedValue ; Store result
mov #Temp_Page, PAGESEL ; Back Page
rts
;**************************************************************
;* Startup Vector *
;**************************************************************
ORG $3FFD
JMP _Startup ; Reset
;**************************************************************
;* Data Table *
;**************************************************************
ORG Table_Data
dc.b 0,4,8,12,16,20,23,27,30,34,38,41,44,48,51,54
dc.b 57,60,64,67,70,72,75,78,81,84,86,89,92,94,97,99
dc.b 102,104,107,109,111,113,116,118,120,122,124,126,128,130,132,134
dc.b 136,138,140,142,143,145,147,149,150,152,153,155,157,158,160,161
dc.b 163,164,166,167,168,170,171,172,174,175,176,177,179,180,181,182
dc.b 183,184,185,187,188,189,190,191,192,193,194,195,196,197,197,198
dc.b 199,200,201,202,203,203,204,205,206,207,207,208,209,209,210,211
dc.b 212,212,213,214,214,215,215,216,217,217,218,218,219,219,220,221
dc.b 221,222,222,223,223,224,224,225,225,225,226,226,227,227,228,228
dc.b 228,229,229,230,230,230,231,231,232,232,232,233,233,233,234,234
dc.b 234,235,235,235,235,236,236,236,237,237,237,237,238,238,238,238
dc.b 239,239,239,239,240,240,240,240,240,241,241,241,241,242,242,242
dc.b 242,242,242,243,243,243,243,243,243,244,244,244,244,244,244,245
dc.b 245,245,245,245,245,245,246,246,246,246,246,246,246,246,247,247
dc.b 247,247,247,247,247,247,247,248,248,248,248,248,248,248,248,248
dc.b 248,248,249,249,249,249,249,249,249,249,249,249,249,249,249,250
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