When creating your own version of the firmware, it is necessary not only to know programming languages, but also to be guided by the peculiarities of the object into which it will subsequently be installed. In the absence of at least basic knowledge about the principles of operation of the device software, it is better not to undertake its independent development.
Necessary
A set of utilities for creating device firmware
Instructions
Step 1
Learn the basics of the device for which the firmware program you are developing is intended. For a more detailed study, it is recommended to use the source files of the ready-made software, since this way you will not forget to think over the basic functions of the device, creating any of your own features of your modification.
Step 2
Provide the development of additional functions that will be supported by your device firmware program. Be sure to check how this will work with the core functionality and if there are any conflicts. Also provide a bunch of high-priority points with secondary ones.
Step 3
Write the firmware code for your device. Create directories, application files and system configurations, ensure their interconnection. Also create a software menu that will contain the main and secondary functions of the device. Also, don't forget about the graphics.
Step 4
Draw the menu icons, the appearance of the program. By the way, there are a sufficient number of various modifications of device firmware. Do not forget about this when implementing this or that idea for your device, it is quite possible that similar firmware already exists.
Step 5
After you create your bug-free firmware, compile it into an installation file. Merge the old version of the device software to your computer and save it in case your firmware suddenly does not work. Then you can use the old one again to return the device to its original state. Install the software you developed and test it.