Part Number: MSP430FR2311
I've been reading through the documentation and out of box example code for FRAM, but there are still a few things that are not clear.
I know that if I want a variable to be stored in FRAM i need to add the following for each variable:
#pragma PERSISTENT(variable_name)
Then whenever I write to that variable I need to disable the memory protection temporarily.
//Get previous write protection setting
uint8_t state = HWREG8(SYS_BASE + OFS_SYSCFG0_L);
#ifdef DFWP
uint8_t wp = DFWP | PFWP;
#else
uint8_t wp = PFWP;
#endif
#ifdef FRWPPW
HWREG16(SYS_BASE + OFS_SYSCFG0) = FWPW | (state & ~wp);
#else
HWREG8(SYS_BASE + OFS_SYSCFG0_L) &= ~wp;
#endif
variable_name = 1;
//Restore previous write protection setting
#ifdef FRWPPW
HWREG16(SYS_BASE + OFS_SYSCFG0) = FWPW | state;
#else
HWREG8(SYS_BASE + OFS_SYSCFG0_L) = state;
#endif
What remains unclear is supposedly you can see if memory protection is enable in CCS by going to Properties -> General. However, I don't see it there. I just want to be able to verify that the memory protection is turned on. Please correct me if any of the previous steps or assumptions are incorrect.
Thanks
