STC micro STC8A8K64D4 Series - Master Routine of Single Master Single Slave Mode (Polling Mode)

STC8A8K64D4 Series Manual
- 576 -
ORG 0100H
SPIISR:
MOV SPSTAT,#0C0H ;Clear interrupt flag
MOV SPDAT,SPDAT ;Transmit the received data back to the master
CPL LED
RETI
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 SPCTL,#40H ;Enable SPI slave mode
MOV SPSTAT,#0C0H ;Clear interrupt flag
MOV IE2,#ESPI ;Enable SPI interrupt
SETB EA
JMP $
END
20.9.3 Master Routine of Single Master Single Slave Mode (Polling Mode)
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
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;
sfr SPSTAT = 0xcd;
sfr SPCTL = 0xce;