Hello,
ADC12 Lesson learnt.
After doing some checks I realized that I damaged analog input while attaching +5V.
Max voltage that ADC12 accepts is 3,3V. There is some threshold above which ESD protection diodes start conducting. Of course current which ESD protection can handle is less than +5V pin on the launchpad can provide...I guess close to 500mA. Thus these diodes got broken...Fortunately I have couple more Ax's to use ;-)
Thanks,
Jacek