CSR5 EQU 15H
CSR6 EQU 16H
CSR7 EQU 17H
; TEMP REGISTERS
TMP1 EQU 18H ; TEMP REGISTER FOR READ AND WRITE
TMP2 EQU 19H ; TEMP REGISTER FOR READ AND WRITE
REG EQU 1AH ; NOT USED
REG1 EQU 1BH ; NOT USED
KEY0 EQU 1CH ; 64 BIT KEY SHIFT REGISTER
KEY1 EQU 1DH
KEY2 EQU 1EH
KEY3 EQU 1FH
KEY4 EQU CNT2
KEY5 EQU CSR5
KEY6 EQU CSR6
KEY7 EQU CSR7
; ***** USER REGISTER RE-MAPPINGS ***************
HOP1 EQU CSR0 ; 32 BIT HOPCODE REGISTER
HOP2 EQU CSR1
HOP3 EQU CSR2
HOP4 EQU CSR3
; RECEIVED TRANSMISSION OPEN 32 BITS
SER_0 EQU CSR7 ; 28 BIT SERIAL NUMBER
SER_1 EQU CSR6
SER_2 EQU CSR5
SER_3 EQU CSR4
; RECEIVED TRANSMISSION ENCRYPTED 32 BITS
FUNC EQU CSR3 ; BUTTON CODE & USER BIT FUNCTION BYTE
DISC EQU CSR2 ; DISCRIMINATION VALUE
CNTR_HI EQU CSR1 ; 16 BIT RX COUNTER HIGH BYTE
CNTR_LW EQU CSR0 ; 16 BIT RX COUNTER LOW BYTE
; ********* EEPROM MEMORY *******
LRNPTR EQU 01H ; LEARN POINTER
; ********* PORTA BIT DEFINITIONS *******
RES0 EQU 0H ; RESERVED PIN
RFIN EQU 1H ; RF INPUT
LRN EQU 2H ; LEARN BUTTON
LED EQU 3H ; LEARN INDICATOR LED OUTPUT - VALID SIGNAL
; ********* PORTB BIT DEFINITIONS *******
S0 EQU 0H ; S0 OUTPUT
S1 EQU 1H ; S1 OUTPUT
S2 EQU 2H ; S2 OUTPUT
S3 EQU 3H ; S3 OUTPUT
DIO EQU 4H ; EEPROM DATA LINE
CLK EQU 5H ; EEPROM SERIAL CLOCK
CS EQU 6H ; EEPROM CHIP SELECT
RES1 EQU 7H ; RESERVED PIN
; ********* COMPILER DEFINES ******************
NBITS EQU 64 ; MAXIMUM TRANSMISSION BIT LENGTH
MIN EQU 560 ; TRANSMISSION HEADER MINIMUM LENGTH [?]
TRISA EQU 0111B ; PORTA: TRI-STATE VALUE
WRCFG EQU 00000000B ; PORTB: EEPROM WRITE TRI-STATE VALUE
RDCFG EQU 00010000B ; PORTB: EEPROM READ TRI-STATE VALUE
;****** FLAGS DEFINITIONS **************
BITIN EQU 0H ; RF BIT VALUE
LRNF EQU 1H ; LEARN FLAG
SEC_CNT EQU 2H ; SECOND COUNTER IS BEING CHECKED
RELEARN EQU 3H ; RELEARNING A TRANSMITTER
;****** STATUS REGISTER BIT DEFINITIONS *****************
C EQU 0 ; CARRY
DC EQU 1 ; DIGIT CARRY
Z EQU 2 ; ZERO
PD EQU 3 ; POWER DOWN
TO EQU 4 ; TIMEOUT
PA0 EQU 5 ; NOT USED
PA1 EQU 6 ; NOT USED
;------------------------------------------------------------------------------
; PAGE 0:
;------------------------------------------------------------------------------
ORG 00H
;------------------------------------------------------------------------------
;
; FUNCTION : RESET ()
;
; DESCRIPTION : PROGRAM RESET ROUTINE
;
;------------------------------------------------------------------------------
RESET
MOVLW 000111B ; SETUP RTCC PRESCALER
OPTION
CLRF PORTA ; RESET PORTA
CLRF PORTB ; RESET PORTB
MOVLW TRISA ; SETUP PORTA
TRIS PORTA
MOVLW WRCFG ; SETUP PORTB
TRIS PORTB
CLRF FLAGS ; RESET FLAGS
GOTO M_LOOP ; GOTO MAIN PROGRAM LOOP
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