DS1994 memory response problem

[chika]

Hallo All,im working with BeckSC12 µC to communicate with DS1994(EEPROM) through DS2484(1 wire -I2C interface device).im also using beck I2C API!
i wrote 00 11 to the EEPROM scratchpad but when reading back,i get aa and a seiries of FF!!!!!!!!!!!!!!what could be the problem!
thanks.

SEE CODE BELOW!!!!!!!!!!!!!!



void WMatchEEPROM() //matchrom and write to eeprom page
{

uchar bufs0[2];
uchar bufs1[2];
uchar bufs2[2];
uchar bufs3[2];
uchar bufs4[2];
uchar bufs5[2];
uchar bufs6[2];
uchar bufs7[2];
uchar bufs8[2];
uchar bufs9[2];
uchar bufs10[2];
uchar bufs11[2];
uchar bufs12[2];
uchar bufs13[2];
onewreset1(); // 1 wire reset and reading the status register

bufs0[0]=0xA5; // 1 wire write byte
bufs0[1]=0x55; //match rom command
I2C_transmit_block(0x30,bufs0,2);
//I2C_release();
bufs1[0]=0xA5;
bufs1[1]=0x93; //MSB for eeprom address(start)7
I2C_transmit_block(0x30,bufs1,2);
//I2C_release();
bufs2[0]=0xA5;
bufs2[1]=0x00;// 6
I2C_transmit_block(0x30,bufs2,2);
//I2C_release();
bufs3[0]=0xA5;
bufs3[1]=0x00;// 5
I2C_transmit_block(0x30,bufs3,2);
//I2C_release();
bufs4[0]=0xA5;
bufs4[1]=0x00;// 4
I2C_transmit_block(0x30,bufs4,2);
//I2C_release();
bufs5[0]=0xA5;
bufs5[1]=0x14;// 3
I2C_transmit_block(0x30,bufs5,2);
//I2C_release();
bufs6[0]=0xA5;
bufs6[1]=0xA5;// 2
I2C_transmit_block(0x30,bufs6,2);
//I2C_release();
bufs7[0]=0xA5;
bufs7[1]=0x15;// 1
I2C_transmit_block(0x30,bufs7,2);
//I2C_release();
bufs8[0]=0xA5;
bufs8[1]=0x04;//0 LSB, adress end
I2C_transmit_block(0x30,bufs8,2);
I2C_release();
bufs9[0]=0xA5;
bufs9[1]=0x0F;//write scratchpad
I2C_transmit_block(0x30,bufs9,2);
//I2C_release();
bufs10[0]=0xA5;
bufs10[1]=0x00;//Msb of page1 address
I2C_transmit_block(0x30,bufs10,2);
//I2C_release();
bufs11[0]=0xA5;
bufs11[1]=0x26;//Lsb of page 1 address
I2C_transmit_block(0x30,bufs11,2);
//I2C_release();
bufs12[0]=0xA5;
bufs12[1]=0x11;// data to page 1 address
I2C_transmit_block(0x30,bufs12,2);
bufs13[0]=0xA5;
bufs13[1]=0x22;// data to page 1 address
I2C_transmit_block(0x30,bufs13,2);
ReadStatusReg(); //status reg infomation
I2C_release();
}

uchar RMatchEEPROM() //read eeprom page data
{

uchar bufs0[2];
uchar bufs1[2];
uchar bufs2[2];
uchar bufs3[2];
uchar bufs4[2];
uchar bufs5[2];
uchar bufs6[2];
uchar bufs7[2];
uchar bufs8[2];
uchar bufs9[2];
uchar bufx[2];
uchar y,*ptry;
uchar bufs[2];
int i;
onewreset1(); // 1 wire reset and reading the status register

bufs0[0]=0xA5; // 1 wire write byte
bufs0[1]=0x55; //match rom command
I2C_transmit_block(0x30,bufs0,2);
//I2C_release();
bufs1[0]=0xA5;
bufs1[1]=0x93; //MSB for eeprom address(start)7
I2C_transmit_block(0x30,bufs1,2);
//I2C_release();
bufs2[0]=0xA5;
bufs2[1]=0x00;// 6
I2C_transmit_block(0x30,bufs2,2);
//I2C_release();
bufs3[0]=0xA5;
bufs3[1]=0x00;// 5
I2C_transmit_block(0x30,bufs3,2);
//I2C_release();
bufs4[0]=0xA5;
bufs4[1]=0x00;// 4
I2C_transmit_block(0x30,bufs4,2);
//I2C_release();
bufs5[0]=0xA5;
bufs5[1]=0x14;// 3
I2C_transmit_block(0x30,bufs5,2);
//I2C_release();
bufs6[0]=0xA5;
bufs6[1]=0xA5;// 2
I2C_transmit_block(0x30,bufs6,2);
//I2C_release();
bufs7[0]=0xA5;
bufs7[1]=0x15;// 1
I2C_transmit_block(0x30,bufs7,2);
//I2C_release();
bufs8[0]=0xA5;
bufs8[1]=0x04;//0 LSB, adress end
I2C_transmit_block(0x30,bufs8,2);
//I2C_release();
bufs9[0]=0xA5;// 1 wire byte
bufs9[1]=0xAA;//read scratchpad
I2C_transmit_block(0x30,bufs9,2);

for(i=0;i<32;i++)
{
I2C_transmit_char(0x30,0x96); //1 wire readbyte
I2C_release();
//I2C_release();
//bufs[0]=0x96;
//bufs[1]=0x00;//Msb of page2
//I2C_transmit_block(0x30,bufs,2);
//I2C_release();
// bufs[0]=0x96;
// bufs[1]=0x00;//Lsb of page 2
//I2C_transmit_block(0x30,bufs,2);
ReadStatusReg(); //status reg infomation
//I2C_release();
bufx[0]=0xE1;//set readpointer
bufx[1]=0xE1;//to data register
I2C_transmit_block(0x30,bufx,2);
I2C_receive_block(0x30,&y,1);
printf("\n show reg data here!%02x\n",y);
I2C_release();
}
return y;
}

[skimask]

Hallo All,im working with BeckSC12 µC to communicate with DS1994(EEPROM) through DS2484(1 wire -I2C interface device).im also using beck I2C API!
i wrote 00 11 to the EEPROM scratchpad but when reading back,i get aa and a seiries of FF!!!!!!!!!!!!!!what could be the problem!
thanks.

Is that Microchip C you are using?