Hi,
We here at the CCS forum do not have code that performs QPSK - that you will have to find somewhere else (maybe on the forum of the device you are using).
Regarding plotting, the constellation graphs were removed from CCSv4 and 5 due to the lack of interest of the general public (check here). Although there is an enhancement request to add this back, to date there is still no forecast date due to other priorities.
Regards,
Rafael