MSP430 FRAM benutzen

int _system_pre_init(void)

{

  WDTCTL = WDTPW + WDTHOLD;

  // Configure Memory Protection Unit

  MPUCTL0 = MPUPW;              // Write PWD to access MPU registers

  MPUSEG = 0x0804;                       // B1 = 0xC9B0; B2 = 0xD160

  // Segment 1 – Allows read and write only

  // Segment 2 – Allows read only

  // Segment 3 – Allows read and execute only

  MPUSAM = (MPUSEG1WE | MPUSEG1RE | MPUSEG2RE | MPUSEG3RE | MPUSEG3XE);

  MPUCTL0 = MPUPW | MPUENA; // Enable MPU protection

  return 1;

}