STC micro STC8A8K64D4 Series - Master Codes for Testing I; Slave Mode

STC8A8K64D4 Series Manual
- 622 -
STOPIF:
ANL A,#NOT 08H ;Handle the STOP event
MOVX @DPTR,A
SETB ISDA
SETB ISMA
JMP LOOP
END
21.5.6 Master Codes for testing I
2
C Slave Mode
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr P_SW2 = 0xba;
#define I2CCFG (*(unsigned char volatile xdata *)0xfe80)
#define I2CMSCR (*(unsigned char volatile xdata *)0xfe81)
#define I2CMSST (*(unsigned char volatile xdata *)0xfe82)
#define I2CSLCR (*(unsigned char volatile xdata *)0xfe83)
#define I2CSLST (*(unsigned char volatile xdata *)0xfe84)
#define I2CSLADR (*(unsigned char volatile xdata *)0xfe85)
#define I2CTXD (*(unsigned char volatile xdata *)0xfe86)
#define I2CRXD (*(unsigned char volatile xdata *)0xfe87)
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;
sbit SDA = P1^4;
sbit SCL = P1^5;
void Wait()
{
while (!(I2CMSST & 0x40));
I2CMSST &= ~0x40;
}
void Start()
{
I2CMSCR = 0x01; //Send START command
Wait();
}