8-Channel 12-Bit ADC for Raspberry Pi, all ADCs reading 0

Hi,

I am having an issue when trying to use the 8-Channel 12-Bit ADC for Raspberry Pi. I have followed the setup code and run the code as shown in 8-Channel 12-Bit ADC for Raspberry Pi (STM32F030) - Seeed Wiki. The code I’m running is exactly the same apart from line 4 where ‘ADC_DEFAULT_IIC_ADDR = 0X04’ is changed to ‘ADC_DEFAULT_IIC_ADDR = 0X08’ as this is the address for i2c on the rasberry pi.
I am currently only getting zeros on all output, where i would be expecting a floating value on and ADC which is not connected to anything.
Any advice on how to fix?

Thanks in advance.

Cheers

Alex