SWRZ080D january 2018 – june 2023 CC2652R
Public key accelerator (PKA) interrupt line is always high when module is enabled and PKA is idle
Revision F and earlier
When the PKA module is enabled and idle, the interrupt line is always high and the interrupt can thus not be used as is.
The workaround is to disable the PKA interrupt in the interrupt service routine while the PKA module is idle and re-enable the interrupt right after starting an operation.
The workaround is implemented in the TI-provided cryptography drivers (ECDHCC26X2.c, ECDSACC26X2.c, ECJPAKECC26X2.c_list.c) in the following SimpleLink software development kit (SDK) versions: