TM4C1294NCPDT: Ethernet Firmware Update

Hi,

  I just answered your another post at https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1357975/tm4c1294ncpdt-ethernet-firmware-update

Muhammad Sobeh said:

but i have some question why we need boot_demo_emac and why the boot_emac_flash is not enough and what happen when i load the boot_emac_flash and boot_demo_emac and i want to load another application what happen to boot_demo_emac would it still exist or the bootloader write the new code on it

boot_emac_flash is the bootloader. The bootloader is a tiny piece of program that is first loaded to the flash via  JTAG interface. It has the code to setup Ethernet module and interact with the BootP and TFTP server to download your application firmware image. boot_demo_emac_flash is an example application firmware. You can create your own application but start with the example first. Once you are familiar with how everything works, you can adapt to your own application. In the current bootloader setup, you will overwrite the existing application firmware if you choose to update it again.