TMP1827: Read EEPROM data from TMP1827

hi,

I am able to write data via scratchpad-2 but when I am trying to read the data from EEPROM after restarting the device the data received is always 0xFF. 

Can you help us if we are missing something while reading the data from EEPROM?

my code is mentioned below:

// sp2 write sequence
hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 18750);

oneWireReset();

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 115200);

//wait

mcu_txOneWireByte(0xCC);

mcu_txOneWireByte(0x0F);

mcu_txOneWireByte(0x00); // high address

mcu_txOneWireByte(0x00); // low address

mcu_txOneWireByte(0x00);
mcu_txOneWireByte(0x04);
mcu_txOneWireByte(0x03);
mcu_txOneWireByte(0x02);
mcu_txOneWireByte(0x6F);
mcu_txOneWireByte(0x01);
mcu_txOneWireByte(0x0e);
mcu_txOneWireByte(0x00);
rom_code[37] = OneWire_ReadByte(); //crc

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 18750);

oneWireReset();

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 115200);

//wait

mcu_txOneWireByte(0xCC);

mcu_txOneWireByte(0xAA);

mcu_txOneWireByte(0x00); // high address

mcu_txOneWireByte(0x00); // low address

rom_code[38] = OneWire_ReadByte();
rom_code[39] = OneWire_ReadByte();
rom_code[40] = OneWire_ReadByte();
rom_code[41] = OneWire_ReadByte();
rom_code[42] = OneWire_ReadByte();
rom_code[43] = OneWire_ReadByte();
rom_code[44] = OneWire_ReadByte();
rom_code[45] = OneWire_ReadByte();
rom_code[46] = OneWire_ReadByte(); //crc

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 18750);

oneWireReset();

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 115200);

//wait

mcu_txOneWireByte(0xCC);

mcu_txOneWireByte(0x55);

mcu_txOneWireByte(0xA5);

// sp2 write sequence
hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 18750);

oneWireReset();

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 115200);

//wait

mcu_txOneWireByte(0x55);

mcu_txOneWireByte(0x27);
mcu_txOneWireByte(0x00);
mcu_txOneWireByte(0x00);
mcu_txOneWireByte(0x00);
mcu_txOneWireByte(0x00);
mcu_txOneWireByte(0x23);
mcu_txOneWireByte(0x67);
mcu_txOneWireByte(0x13);


hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 18750);

oneWireReset();

hal_uart_close(UART_2_INDEX);
hal_uart_changeBaudRate(UART_2_INDEX, 115200);

mcu_txOneWireByte(0xF0);

mcu_txOneWireByte(0x00); // high address

mcu_txOneWireByte(0x0); // low address


rom_code[28] = OneWire_ReadByte();
rom_code[29] = OneWire_ReadByte();
rom_code[30] = OneWire_ReadByte();
rom_code[31] = OneWire_ReadByte();
rom_code[32] = OneWire_ReadByte();
rom_code[33] = OneWire_ReadByte();
rom_code[34] = OneWire_ReadByte();
rom_code[35] = OneWire_ReadByte();
rom_code[36] = OneWire_ReadByte(); //crc