Resolved! Want (software) reset of CPU (STM32F051) in response to hard fault interrupt but can't compile NVIC_SystemReset() - "implicit declaration..."
I'm exploring STM32F051 using STM32CUBE IDE without use of HAL or lower level support routines (i.e., upon entry at reset vector, manually configure peripheral registers and go - so far so good :)I wish to cause a reset from within hard fault handler...