I would like to make devices to put passwords for example. I like owner to change, put new passwords, erase the password and stay in memory after disconnecting from electrical power.Where to put these passwords and how to program this? I am working in Keil 4 and Keil 5.Iam working in Cortex M4.Please tell me examples, literature.
I am reading the books The Definitive Guide to ARM® Cortex®-M3 and Cortex®-M4 Processors,Thirth edition. by Joseph Yiu
and
Embedded Software in C for an ARM Cortex M by Jonathan W. Valvano and Ramesh Yerraballi (1/2015)
What ARM cortex M4 based board are you using?
ARM Cortex-M4 microcontrollers are based on ARMv7 architecture. Hence, Cortex-M4 MCUs support thumb-2 instruction set architecture. Thumb-2 instructions support a mixture of 16-bit and 32-bit instructions. The original architecture of ARM is an ARM instruction set architecture. ACE Flare Login