I am using v1.0.0 STM32CubeIDEWhich version STM32CubeIDE are you running?
The latest version is v1.2.1.
I have been trying some steps to create / run c++ program. What are the steps to create c++ program to blink led in STM32CubeIDE ?You ought to be using the automatic HW configuration and SW code generator.
It will initilize the hardware and generate a code template for you.