|
TMOD
|
G | C/T | M1| M0 | G | C/T | M1 | M0
|
|
SCON
|
SM0|SM1|SM2| REN | T8 | R8 | TI | RI
|
|
IE
|
EA| - | ET2 | ES | ET1|EX1|ET0|EX0
|
|
TCON
|
F1| R1| F0| R0| IE1| IT1| IE0| IT0
|
|
Baud Rate
|
TH1 (Decimal)
|
TH1 (HEX)
|
|
9600
|
-3
|
FD
|
|
4800
|
-6
|
FA
|
|
2400
|
-12
|
F4
|
|
1200
|
-24
|
E8
|
|
Interrupt
|
number
|
pin
|
|
INT0
|
0
|
P3.2
|
|
TF0
|
1
|
P3.4
|
|
INT1
|
2
|
P3.3
|
|
TF1
|
3
|
P3.5
|
|
RI+TI
|
4
|
P3.0(Rx)+P3.1(Tx)
|
|
SET TMOD
|
|
INITIALIZE TL , TH
|
|
Start Timer TR=1
|
|
Poll [ While(TF == 0); TR=0; TF=0; ]
|
|
TMOD = 0X20
|
|
TH1= -3 (BAUD RATE)
|
|
SCON = 0X50
|
|
SBUF= data;
|
|
poll/ISR for TI/ RI
|
|
ISR definition
|
|
void fxn() interrupt [] {}
|
|
enable interrupts IE
|
No comments yet.
Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
