HDC2080: Reading Device ID

Dear Josh

This is in addition the my previous post,https://e2e.ti.com/support/sensors/f/1023/t/936000 

I am trying to check which HDC device(HDC2080 or HDC1080) the PCB is using. The aim is that once it is known the correct code can be executed in my firmware.

I do not have an analyser therefore i can not send whats happening on my i2c bus.

But at times(maybe after a reset), i have noticed that i am getting -40 degrees and 0% reading, and after a little investigation i found that device id was not getting read correctly , therefore not selecting the appropriate  sensor library to execute. When HDC2080 is used, at times it will output 0x07 which i belive is correct, but then it will output 0x00,0x80,0x81. If i was to preform multiple resets i eventually get the correct id, which then progresses to correct results.

This is my code, am i doing something wrong to obtain a id of the device on HDC2080?

uint8_t check_humdidity_temperture_device_type(void)
{
		uint8_t id_device= 0;
		twiInitialize(TWI);
		twiAddress(TWI,HUM_ADDR,0);		
		twiWriteSingle(TWI,0xFF);					
		twiAddress(TWI,HUM_ADDR,1);
		id_device = twiReadSingle(TWI,1);		
		twiReadSingle(TWI,1);
		twiStop(TWI);	
		return id_device;
}

Thanks