ARM Cortex M Processor Custom Boot Loader

The developer faces the problem when they have two different application (means two different source code) and they want to merge both of them to one application. At that point, the developer can place both the application separately in controller internal flash along with the custom boot loader on top of the applications. On power ON using the custom boot loader, the user can decide which application has to run. In this literature, I have used the NUCLEO F446RE STM development board.