STC micro STC8A8K64D4 Series - USART2 Switch

STC8A8K64D4 Series Manual
-
- 20 -
P3M0 DATA 0B2H
P4M1 DATA 0B3H
P4M0 DATA 0B4H
P5M1 DATA 0C9H
P5M0 DATA 0CAH
ORG 0000H
LJMP MAIN
ORG 0100H
MAIN:
MOV SP, #5FH
MOV P0M0, #00H
MOV P0M1, #00H
MOV P1M0, #00H
MOV P1M1, #00H
MOV P2M0, #00H
MOV P2M1, #00H
MOV P3M0, #00H
MOV P3M1, #00H
MOV P4M0, #00H
MOV P4M1, #00H
MOV P5M0, #00H
MOV P5M1, #00H
MOV P_SW1,#00H ;RXD/P3.0, TXD/P3.1
; MOV P_SW1,#40H ;RXD_2/P3.6, TXD_2/P3.7
; MOV P_SW1,#80H ;RXD_3/P1.6, TXD_3/P1.7
; MOV P_SW1,#0C0H ;RXD_4/P4.3, TXD_4/P4.4
SJMP $
END
3.2.2 USART2 switch
C language code
// Operating frequency for test is 11.0592MHz
#include "reg51.h"
sfr P_SW2 = 0xba;
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
void main()
{
P0M0 = 0x00;