;PORTS INFORMATION
;PORT0 : CONTROL SIGNALS FOR TLD18200T
BOARD
;PORT1 : INPUT FORM HCTL2022
;PORT2 : INPUT FORM ADC
;PORT3 : CONTROL SIGNALS FOR HCTL2022
PWM_B EQU 22H
BYTE1 EQU 23H
BYTE2 EQU 24H
BYTE3 EQU 25H
BYTE4 EQU 26H
PWM_VALUE EQU R2
ADC_VALUE EQU R3
CS EQU P0.0
READ EQU P0.1
WRITE EQU P0.2
PWM EQU P0.3
DIR EQU P0.4
BRAKE EQU P0.5
THERM EQU P0.6
HCTL_IN EQU P1
ADC_IN EQU P2
RX EQU P3.0
TX EQU P3.1
INTR_ADC EQU P3.2
RST_HCTL EQU P3.4
OE_HCTL EQU P3.5
SEL2 EQU P3.6
SEL1 EQU P3.7
ORG 0000H
LJMP MAIN
ORG 0003H
;LJMP EXT0_ISR
ORG 000BH
LJMP T0ISR
ORG 0013H
;LJMP EXT1_ISR
ORG 001BH
;LJMP T1_ISR
ORG 0023H
LJMP SER_ISR
ORG 0030H
MAIN:
CALL INITIATE ;INITIATE ALL
THE PORTS
CALL SER_INIT ;INITIATE
SERIAL WITH 9600 BAUD
CALL TIMER_INIT
;INITIATE TIMER0 WITH BASE WAVE
(100KHz)
MOV IE,#10010010B ;ENABLE SERIAL
AND TIMER 0 INTURRPET.
HERE:
SJMP HERE
INITIATE:
MOV PWM_B,#00H
MOV ADC_IN,#0FFH
MOV HCTL_IN,#0FFH
MOV PWM_VALUE,#50H
MOV ADC_VALUE,#00H
MOV R5,#00
SETB CS
SETB WRITE
SETB READ
CLR BRAKE
CLR PWM
SETB DIR
SETB OE_HCTL
SETB RST_HCTL
CLR SEL1
CLR SEL2
RET
SER_INIT:
MOV TMOD,#20H ;t1,mOD2
MOV TH1,#-6 ;RELOAD
VALUE=(CRYSTAL FREQ/12)/(BAUDRATE*32)
26.04 FOR 2400,6.1 FOR 9600 USING
24MHZ OSCILLATOR
CODE
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