I am trying to perform a simple write to the program-once area with no luck. I am suspecting that maybe I am not performing the mass erase operation correctly. Will the ARM Flash Programmer app form USBDM do the trick?
Once the Mass Erase is complete and new firmware is loaded, I attempt to write teh program once registers. My procedure is pretty straighforward; write 0x41 to FCCOB_0, write 0x01 to FCCOB_1, 0x3 to FCCOB_4, and finally toggle the CCIF bit.
Is this enough to write 0x3 to the 2nd program-once record?